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To find information on new products, see Page 6 and 7. 507

Worm Gear Pair

Catalog Number of KHK Stock Gears

The Catalog Number for KHK stock gears is based on the simple formula listed below. Please order KHK gears by specifying the Catalog Numbers.

Worm Gear Pair

■ Feature IconsRoHS Compliant Product

Stainless Product

Re-machinableProduct

Resin Product

Finished Product Copper Alloy Product

Heat Treated ProductInjection Molded Product

Ground GearBlack Oxide coated Products

(Example)

KWGDL・KWGDLSDuplex Worms

m1.5 ～ 4 Page 516

KWGGround Worm Shafts

m0.5 ～ 6 Page 522

AGDLDuplex Worm Wheels

m1.5 ～ 4 Page 516

Reduction Ratio 20 ～ 60

AGWorm Wheels

m0.5 ～ 1.5 Page 522

Reduction Ratio 10 ～ 60

AGFWorm Wheels

m2 ～ 6 Page 526

Reduction Ratio 10 ～ 60

SWGGround Worms

m1 ～ 6 Page 532

Newly added

Series

AGWorm Wheels

m1 ～ 6 Page 532

Reduction Ratio 10 ～ 60

BGBronze Worm Wheels

m0.5 ～ 6 Page 540

Reduction Ratio 10 ～ 60

SWSteel Worms

m0.5 ～ 6 Page 540

Newly added

Series

CGGray Iron Worm Wheels

m1 ～ 6 Page 542

Reduction Ratio 10 ～ 120

DGPlastic Worm Wheels

m0.5, 0.8 Page 556

Reduction Ratio 10 ～ 60

PGPlastic Worm Wheels

m1 ～ 3 Page 558

Reduction Ratio 10 ～ 50

SUWStainless Steel Worms

m0.5 ～ 3 Page 556

Newly added

Series

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Worms

K W G DL 2 - R1Hand of Thread & Number of Starts (Right hand, Single thread)Module (2)

Type (Duplex Worm)

Others (Ground Gear)

Type ( Worm)

Material (SCM440)

Material TypeK SCM440 W WormsS S45C DL Duplex WormsSU SUS303 Other Information

G Ground Gears S Worm Shafts

Material TypeA CAC702(*AℓBC2) G Worm WheelsB CAC502(*PBC2) GDL Duplex Worm WheelsC FC200 D Polyacetal * ( ) indicates old JIS designationP MC901

Worm Wheels

A G 1.5 - 20 R2Hand of Thread & Number of Starts (Right hand, Double thread)Number of teeth (20)

Module (1.5)

Type (Worm Wheel)

Material (CAC702)

KHK products are available from MARYLAND METRICSP.O. Box 261 Owings Mills, MD 21117 USA ph: (410)358-3130 (800)638-1830 fx: (410)358-3142 (800)872-9329 email: sales@mdmetric.com http://mdmetric.com RFQ form: http://mdmetric.com/rfq.htm

508

Characteristics

Worm Gear Pair

〔NOTE 1〕 The material of cast hubs for AGF and AG worm wheels is FC200(Cast Iron). AG worm wheels mate primarily with SWG worms. But, for Modules 0.8 or smaller, AG worm wheels mate with KWG worms.

〔NOTE 2〕 KHK stock worms and worm wheels are produced to KHK’s own precision grades. See the “Precision of Worms and Worm Wheels” in the “Selection Hints” section.

Worm Grinding Machine by Klingelnberg Worm gear testing machine by Klingelnberg

Our precision gear cutting technology enables acceleration and noise reductionSetting the proper tooth contact and the backlash is essential for using worm gears. Use KHK stock worm gears for safe, reliable use.

The simplest way to obtain a large speed reduction with high torque in a compact space is with worm gear drives. KHK stock worms and worm wheels are available in modules 0.5 to 6 and in speed ratios of 1/10 to 1/120, made in a variety of materials and styles. We also offer stock duplex worms and worm wheels with which you can obtain a very low backlash, high rotational pre-cision system. The following table lists the main features for easy selection.

Type Catalog No. Module No. of threadsor reduction ratio

Material （ ）JIS

Heat treat-ment

Tooth surface finish

Precision KHK W 001KHK W 002NOTE 2

Features

Duplex Worms & Worm Wheels

Worm KWGDL 2 ～ 4 Single thread SCM440Thermal refined, gear teeth induc-tion hardened

Ground 1High-precision duplex worms with superior strength. A range of backlash values can be obtained by moving the worm axially.

Worm KWGDLS 1.5 ～ 4 Single thread SCM440Thermal refined, gear teeth induc-tion hardened

Ground 1Duplex worms with a shaft, excellent in accuracy and strength. A range of backlash values can be obtained by moving the worm axially.

Worm Wheel AGDL 1.5 ～ 4 20 ～ 60 CAC702

（AℓBC2）― Cut 1 Duplex worm wheels made of aluminum bronze, excel-

lent in wear-resistance. The pitch accuracy is first grade.

Worm

s & W

orm W

heels

Worm KWG 0.5 ～ 6 Single thread - Double thread SCM440

Thermal refined, gear teeth induc-tion hardened

Ground 2Grounded finished worms with a shaft, including tooth surface quenching treatment. Allows compact design due to having small reference diameters.

Worm Wheel AG NOTE 1 0.5 ～ 1.5 10 ～ 60 CAC702

（AℓBC2）― Cut 2 Made of aluminum bronze, have excellent wear-resis-

tance. Wide selection is available for this item.

Worm Wheel AGF NOTE 1 2 ～ 6 10 ～ 60 CAC702

（AℓBC2）― Cut 2 Made of aluminum bronze, have excellent wear-resis-

tance. Allows compact design.

Worm SWG 1 ～ 6 Single thread - Triple thread S45C

Gear teeth induction hardened

Ground 2 Reasonably priced ground worms. Ready-to-use finished products from the J Series, are also available.

Worm Wheel AG NOTE 1 1 ～ 6 10 ～ 60 CAC702

（AℓBC2） ― Cut 2 Made of aluminum bronze, have excellent wear-resis-tance. Wide selection is available for this item.

Worm SW 0.5 ～ 6 Single thread - Double thread S45C ―

Cut （Thread

rolled）4

Economical, commonly used worms that have broad util-ity. Ready-to-use finished products from the J Series are also available.

Worm SUW 0.5 ～ 3 Single thread - Double thread SUS303 ― Cut 4

Rust-resistant worms made of stainless steel suitable for mating with DS or PG worm wheels. Finished products for the J Series are also available.

Worm Wheel BG 0.5 ～ 6 10 ～ 60 CAC502

（PBC2） ― Cut 4Phosphorous bronze worm wheels have excellent wear resistance. Interchangeable with CG Worm Wheels, and enhances strength.

Worm Wheel CG 1 ～ 6 10 ～ 120 FC200 ― Cut 4

Economical, commonly used worm wheels that have broad utility. Available with a large selection of modules and number of teeth.

Worm Wheel DG 0.5 ～ 0.8 10 ～ 60 Polyacetal ― Cut 5 Fine pitch worm wheels made of polyacetal, a

stable plastic material.

Worm Wheel PG 1 ～ 3 10 ～ 50 MC901 ― Cut 5

Light weight and strong MC Nylon worm wheels. Suitable for use in food machinery, and can be used without lubricant.

509

KHK Technical Information

The efficiency of power transmission varies somewhat with the conditions of assembly and lubricant, but is gen-erally 30~90% (excludes losses from bearings and churn-ing of lubricants). The efficiency of KHK stock worm gear pair is given below as a reference. To learn more about strength calculation, please refer to the technical informa-tion contained in the “Surface Durability of Cylindrical Worm Gearing” section on page 688.

1. Efficiency of Worm Gear Pair

Worm rpm

Catalog No.100 300 600 900 1200 1800

KWG0.5-R1 30 34 38 41 43 46

KWG0.8-R1 35 40 44 47 49 53

KWG1-R1 34 40 45 48 51 54

KWG1.5-R1 35 42 47 51 53 57

KWG2-R1 45 51 56 60 62 65

KWG2.5-R1 44 51 57 61 62 67

KWG3-R1 44 52 58 61 64 67

KWG4-R1 50 58 64 66 70 72

KWG5-R1 51 60 66 69 71 73

KWG6-R1 53 61 66 70 72 75

KWG0.5-R2 46 50 54 58 60 63

KWG0.8-R2 51 56 61 64 66 69

KWG1-R2 51 56 62 64 67 70

KWG1.5-R2 52 59 64 67 69 73

KWG2-R2 61 67 71 74 76 78

KWG2.5-R2 60 67 72 75 76 80

KWG3-R2 61 68 73 75 78 80

KWG4-R2 66 73 77 79 82 84

Worm rpm

Catalog No.100 300 600 900 1200 1800

SWG1-R1 34 40 45 48 51 54

SWG1.5-R1 35 42 47 51 53 57

SWG2-R1 38 45 51 55 56 61

SWG2.5-R1 40 48 54 57 60 63

SWG3-R1 41 49 55 58 62 65

SWG4-R1 42 51 56 61 63 67

SWG5-R1 46 54 60 64 66 70

SWG6-R1 48 57 64 66 68 73

SWG1-R2 51 56 62 64 67 70

SWG1.5-R2 52 59 64 67 69 73

SWG2-R2 55 62 67 70 72 75

SWG2.5-R2 57 64 69 72 75 77

SWG3-R2 58 66 71 73 76 78

SWG4-R2 59 67 72 75 77 80

SWG5-R2 62 70 75 78 79 82

SWG6-R2 65 72 77 80 81 84

SWG3-R3 67 74 78 80 82 84

SWG4-R3 68 75 79 82 83 86

■ Efficiency of KWGDLS/AGDL Worm Gear Pair ( %)(rpm ＝ Rotation of worm)

■ Efficiency of KWG/AG, AGF Worm Gear Pair ( %)(rpm ＝ Rotation of worm)

■ Efficiency of SWG/AG Worm Gear Pair ( %)(rpm ＝ Rotation of worm)

Self-locking is defined as the inability of worm wheels to drive the worms. Factors affecting the self-locking feature include the materials of the worm and worm wheel, lead angle, precision of manufacture, types of bearings, lubricant, etc. Thus, it is not dependent simply on the lead angle. But, in general, self-locking will occur when the lead angle in a single thread worm is less than 4。. For systems requiring fail-safe prevention of back drive, we recommend other brak-ing mechanisms or one-way clutches.

2. Self-Locking Feature of Worm Gear Pair

■ Efficiency of SW, SUM / CG, BG, PG Worm Gear Pair ( %)The efficiency is approximately as follows, depending on the assembly, loading, lubrication and rotational speed.

Catalog No. Thread Efficiency（％）

SW/SUWSingle thread 40 ～ 50％

Double thread 50 ～ 60％

Worm rpm

Catalog No.100 300 600 900 1200 1800

KWGDL1.5-R1 35 42 47 51 53 57

KWGDL2-R1 38 45 51 55 56 61

KWGDL2.5-R1 40 48 54 57 60 63

KWGDL3-R1 41 49 55 58 62 65

KWGDL3.5-R1 42 50 56 61 62 65

KWGDL4-R1 42 51 56 61 63 67

510

Worm Gear Pair

Please select the most suitable products by carefully considering the characteristics of items and contents of the product tables. It is also important to read all applicable “CAUTION” notes shown below before the final selection. Use of catalog numbers when ordering will simplify and expedite the processing of your order.

Selection Hints

Worms and worm wheels have either right-hand or left-hand helix. The same hand worms and worm wheels comprise sets. However, the number of threads and whether they use normal module or axial module system must also be matched. The table below shows available combinations of KHK stock worms and worm wheels.

1. Caution in Selecting the Mating Gears

Worm KWGDL KWGDLS

KWG SWG SW SUW

Mating Worm Wheel NOTE 1

Helix/Thread R1 R1 R2 R1 R2 R3 R1 R2 L1 L2 R1 R2

AGDL R1 ○AG0.5~1.5AGF

R1 ○R2 ○

AGR1 ○R2 ○R3 ○

BG

R1 ○ ○R2 ○ ○L1 ○L2 ○

CG

R1 ○ ○R2 ○ ○L1 ○L2 ○

PGR1 ○ ○R2 ○ ○

DGR1 ○ ○R2 ○ ○

■ Mating Worm Wheels Selection Chart

〔NOTE 1〕 Select the same module for both members.

The gear strength values shown in the product pages were computed by assuming a certain application environment as shown below. There-fore, they should be used as reference only. We recommend that each user computes their own values by applying the actual usage conditions.

2. Caution in Selecting Gears Based on Gear Strength

Catalog No.

Item

KWGDL・KWGDLS/AGDLKWG/AGF, SWG/AG

SW/BG SW/CG SUW/PG SUW/DG

Formula NOTE 2 Formula of worm gear's strength（JGMA405-01） The Lewis formula

Rotations of worm 600rpm 100rpm Allowable bending stress（kgf/mm2）

Lubricant Lubricant for gears with proper viscosity and with anti-pressure additives

1.15（40OC with No

Lubrication）

　　　 NOTE 3

1（40OC with No

Lubrication）

Lubrication Oil bath

Starting condition Starting torque less than 200% of rated torque. Less than 2 starts per hour

Durability 26000 hours

Impact from motor Uniform load

Impact from load Uniform load

Allowable stress factor Sclim 0.67 0.70 0.42

■ Calculation assumptions for Bending Strength ■ Calculation assumptions for Surface Durability

〔NOTE 2〕The gear strength formula is based on JGMA (Japanese Gear Manufacturer’s Association) specifications and “MC Nylon Technical Data” by Nippon Polypenco Limited. The units for the rotational speed (rpm) and the stress (kgf/mm2) are adjusted to the units needed in the formula.

〔NOTE 3〕Allowable bending stress of DG worm wheel is the value we estimated.

RH single thread LH single thread

RH double thread LH double thread

■ The Helixes of Worms and Worm Wheels

■ The Maximum Allowable Sliding Speed Due to Heat

Catalog No. Max. Sliding Speed (m/s)

AGDL 15AGF 15AG 15BG 10CG 2.5PG 1（no lubrication）

＊＊＊＊＊

The maximum allowable sliding speed for each series of worm wheels is given pn the right. Select the ap-propriate part by calculating the sliding speed.Sliding speed　νs（m/s）

νs ＝dn

19100 cos γ

d：Worm pitch dia.n：Worm speed (rpm)γ：Worm nominal lead angle

* JGMA405-01

511

KHK Technical Information

The precision standards of KHK stock worms and worm wheels are established by us. The table below indicates the tolerance ranges for our products.

3. Selecting Worms and Worm Wheels by Precision

KHK established allowable profile and lead errors of worms with precision grades 1 to 4, by using the JIS Standard as reference. Lead errors are measured over one full revolution.

Grade Error

Module

over m0.4up to1

over m1up to 1.6

over m1.6up to 2.5

over m2.5up to 4

over m4up to 6

1Tooth profile error 8 12 16 20 25Lead error 7 9 11 13 16

2Tooth profile error 12 16 20 24 29Lead error 15 18 21 25 28

3Tooth profile error 16 23 30 37 50Lead error 20 23 27 33 37

4Tooth profile error 20 30 40 50 70Lead error 30 32 38 46 52

■ Precision Grades of Worm Wheels (KHK W 002)

We have established standard grades 1 to 5 of worm wheels using the JIS Standard as reference. The allow-able values of Single Pitch Error and Runout Error are defined for each module size and pitch diameter.

Unit：μm

Grade Error

Over m0.4 up to 1 Over m1 up to 1.6 Over m1.6 up to 2.5 Over m2.5 up to 4 Over m4 up to 6Pitch diameter (mm)

6 up to 12

12 up to 25

25 up to 50

50 up to 100

100 up to 200

12 up to 25

25 up to 50

50 up to 100

100 up to 200

200 up to 400

12 up to 25

25 up to 50

50 up to 100

100 up to 200

200 up to 400

25 up to 50

50 up to 100

100 up to 200

200 up to 400

400 up to 800

25 up to 50

50 up to 100

100 up to 200

200 up to 400

400 up to 800

1Single pitch error 5 6 7 7 9 6 7 8 9 10 7 7 8 9 11 8 9 10 11 13 9 10 11 13 14

Total composite error 21 24 26 30 34 25 28 31 35 41 27 30 33 37 43 33 36 40 46 53 37 40 45 50 57

2Single pitch error 8 8 9 10 12 9 10 11 12 14 9 10 12 13 15 11 13 14 16 18 13 14 16 18 20

Total composite error 30 33 37 42 48 35 39 44 50 57 38 42 46 52 60 46 51 57 64 74 52 57 63 71 80

3Single pitch error 11 12 13 15 17 12 14 16 18 20 13 15 16 19 21 16 18 20 23 26 19 20 22 25 29

Total composite error 43 47 53 60 68 50 55 62 71 81 53 59 66 74 85 65 72 81 91 105 74 81 90 100 115

4Single pitch error 15 17 19 21 24 18 19 22 25 29 19 21 23 26 30 23 25 28 32 37 26 28 32 35 40

Total composite error 60 66 74 83 95 70 77 87 99 115 75 83 92 105 120 91 100 115 130 145 105 115 125 140 160

5Single pitch error 21 24 26 30 34 25 28 31 35 41 27 30 33 37 43 33 36 40 46 53 37 40 45 50 57

Total composite error 86 94 105 120 135 100 110 125 140 165 105 120 130 150 170 130 145 160 185 210 150 160 180 200 230

■ Overall Length Tolerance of Worms

① Precision of worms（KHK W 001）

② Precision of worm wheels (KHK W 002)

③ Overall Length Tolerance of Worms

■ Precision Grades of Worms (KHK W 001) (Unit: μm)

Series Total length(mm) Tolerance

KWGDL Uniform0

－ 0.10

SWGSWSUW

Less than 1000

－ 0.15

Over 1000

－ 0.20

KWGDLSKWG Uniform Normal tolerance

■ Overall Length Tolerance of Worms Wheels

Total length(mm) Tolerance

below 300

－ 0.10

over 30 up to 1000

－ 0.15

over 1000

－ 0.20

〔CAUTION〕 PG Plastic Wheels are excluded.

① If you are reboring, it is important to pay special attention to locating the center in order to avoid runout. (Fig.1) The reference datum for gear cutting or grinding is the bore. (For worm shafts, it is ground portion of the shaft.) Therefore, use the bore or shaft for locating the center. If it is too difficult to do for small bores, the alternative is to use one spot on the bore and the runout of the side surface.

② To open up the bore to its maximum, calculate the bore size so that the tooth strength is weaker than the strength of the remaining material.

For machining the maximum bore diameter, it should be designed so that the thickness between hub diameter (or root diameter) to bore diameter has more strength than the gear strength. As a guide, the maximum machined bore diameter should be within 60 % to 70 % of the hub diameter (or root diameter).

512

Worm Gear Pair

Application Hints

KHK Co., Ltd. TEL.048-254-1744 FAX.048-254-1765 E-mail export@khkgears.co.jp

1. Caution on Performing Secondary Operations

If chucking operation using scroll chucks is to be done, we recommend the use of new or rebored jaws for improved precision.

Fig.1

2. Points of Caution in Assembling

Lathe Operation

Direction of rotation and thrust force

R helical

Driver Thrust bearing

Thrust bearing

Driver

Driver Driver

L helical

Fig.2

In order to use KHK stock worms and worm wheels safely, carefully read the Application Hints before proceeding. If there are questions or you require clarifications, please con-tact our technical department or your nearest distributor.

① KHK stock worms and worm wheels are designed such that when assembled according to the specified mounting distance with a tolerance of H7 to H8, the backlash shown in the product tables is obtained. Do not attempt to eliminate backlash by pushing worms into worm wheels or operate with the worm shifted in the direction along the tooth.

② Because of the helix of the gear teeth, worms and worm wheels produce axial thrust forces. The direc-tions of thrust depend on the hand of the helix and the direction of rotation. This is illustrated below in Fig.2. The bearings must be selected properly to be able to handle these thrust forces. See the “Gear Forces” section in the technical reference for more details (Page 699).

③ Because large thrust forces act on worms, if they are not secured to the shaft firmly, they tend to shift. Use of step shafts, set screws, dowel pins, etc., are recom-mended. Also, check for loosening of bearings due to thrust forces.

When the keyway is processed, it should be 50 % to 60 % . In the case FC material is used, it should be lower by 10% or more.

③ Since worm wheels are molded products, they may have air bubbles inside the material. In case you find air bubbles inside when performing secondary operations, and if the bubbles are found to be troublesome, please contact your KHK distributor.

513

KHK Technical Information

3. Verifying the orientation of assembly

SW Worms and BG Worm Wheels used in adjusting a cloth feeding deviceSW Worms and CG Worm Wheels used in a rotating comb device

Application Examples

● Verify that the worm axis is perpendicular to the worm wheel axis.

● Check that the worm axis is in the center of the worm wheel face width.

● Check the mounting distance (allowable mounting dis-tance H7 ～ H8).

● Confirm that the center of the worm wheel goes through the midpoint of the worm length.

BadGood Good

RH LH

Bad

Error Error

RH LH

ErrorError

ErrorError

The worm cannot rotate correctly if the worm is engaged close to either end of its length.

BadGood BadGood

How well the worms and worm wheels are assembled has large effects on the friction of the unit. The tooth contact at the time of assembly must be checked for correctness as shown below. See the “Tooth Contact of a Worm Gear Pair” section in the technical reference for more details (Page 659).

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Duplex Worm GearsKWGDL・KWGDLS & AGDL

■ Description of duplex worm gearsThe usual method of adjusting the backlash of a worm gear as-sembly is to modify the center distance. Once assembled, such adjustment requires a major rework of the gearbox housing. The use of duplex worm gears allows the backlash adjustment to be made by axially shifting the worm. This simplifies greatly the as-sembly and maintenance operations. Because of the unique char-acteristics of the product, please take time to study its construc-tion and proper use.

■ Backlash adjustment mechanism and method of adjustment

〔CAUTION〕The amount of change in backlash ( △ j mm) in relation to the axial movement of the duplex worm shaft (V mm) can be calculated from the formula below.

Wherema ＝ Nominal Axial Module －（0.01 × Nominal Axial Module）

mb ＝ Nominal Axial Module ＋（0.01 × Nominal Axial Module）

Δ j ＝ 2Vmb －ma

ma ＋mb

〔CAUTION〕 The KHK duplex worm is designed so that, for all modules, the backlash reduces by 0.02 mm when the worm is shifted 1 mm.

Fig.1

■ Application Examples

Adjustment by using Screws * Adjustment by using Shims *

Fig. 2

Adjusting Screw Adjusting Shim

The dual-lead worm is formed to give a difference between the right tooth surface and left tooth surface so that it provides a unique tooth profile in which the tooth thick-ness varies continuously, corresponding with the lead difference. (Fig.1)The worm gear is also formed in its right and left tooth surface.When such a worm and worm gear are set up at a constant assembly distance and the worm is moved in the axial direction, the tooth thickness of the worm in mesh with the worm gear changes making backlash adjustment possible.

An arrow marking on the outer circumference of the hub of the KHK duplex worm indicates the direction of assembly as well as acts as a guide for the backlash adjustment.When the worm is held with arrow mark pointing right, the tooth thickness is thinner on the right and thicker on the left. Therefore, moving the worm to the right causes the thicker teeth to come into actual engagement with the worm gear, thereby reducing the backlash. (Fig.2)

(a tooth surface pitch) (b tooth surface pitch)

b tooth surface a tooth surface

(Nom

inal s

urfa

ce)

Reference tooth

Moving the worm in the direction of the arrow causes the backlash to decrease.

* The illustration above is a design example, not a design for machinery or a device in actual use.

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To find information on new products, see Page 6 and 7.

Arrow mark indicates the correct orientation of two gears when assembled. As shown, the two arrows must point in the same direction.

■ Point of caution during assemblyKHK duplex worm gears differs in module between the right and left tooth surface and, therefore, you must orient the worm and worm wheel properly. Please carefully verify the following two aspects be-fore proceeding with assembly.

1. Verifying the orientation of assembly An arrow indicating the orientation of assembly is stamped on both the duplex worm and worm wheel. When assembling

the worm and worm wheel, check the worm wheel of the arrow mark on the front such that the direction of arrow mark on the worm coincides with that on the worm wheel. Should the assembly be incorrect, the center distance “a” will become larger than the normal distance, resulting in difficulty of assembly and improper gear engagement. (Fig.3)

2. Verifying the reference positionA V-groove (60 ,゚ 0.3 mm deep line) on tip peripheral of the duplex worm tooth marks the reference tooth. The gear set is des-ignated to have a backlash of nearly zero ( ± 0.045) when the reference tooth is positioned in alignment with the center of rota-tion of the worm wheel with the center distance set at the value "a". (Fig.4)

Fig. 3

Fig. 4

Reference toothReference tooth

Cen

ter d

ista

nce

Duplex Worm Gears

KWGDL・KWGDLS & AGDL

Cen

ter d

ista

nce

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Duplex WormsModule 1.5、2KWGDL・KWGDLS

Duplex Worms WheelsModule 1.5、2AGDL

R

M

P Q

L N O

S

Vmax

G GG

G

G

G

W4

Catalog No.Nominal axial

moduleNumber of

startNominal

lead angleHand of tread Shape

Bore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length

LH7 M N O P Q RKWGDL2-R1 m2 1 3°41' R W4 14 25 31 35 36 14 50

Catalog No.Nominal axial

moduleNumber of

startNominal

lead angleHand of tread Shape

Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O PKWGDLS1.5-R1 m1.5 1 3°26' R W6 190 66 12 28 18 66 25KWGDLS2-R1 m2 1 3°41' R W6 220 75 13 36 21 75 31

Catalog No.Reduction

ratioNominal axial

moduleNo. of teeth

Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width

AH7 B C D D' E F

AGDL1.5-20R1AGDL1.5-30R1AGDL1.5-36R1AGDL1.5-40R1AGDL1.5-50R1AGDL1.5-60R1

203036405060

m1.5

203036405060

3°26'3°26'3°26'3°26'3°26'3°26'

RRRRRR

H1H1H1H1H1H1

81010121212

223035354550

304554607590

334857637893

34.549.558.564.579.594.5

141414141414

101010101010

AGDL2-20R1AGDL2-30R1AGDL2-36R1AGDL2-40R1AGDL2-50R1AGDL2-60R1

203036405060

m2

203036405060

3°41'3°41'3°41'3°41'3°41'3°41'

RRRRRR

H1H1H1H1H1H1

121515151515

334045455060

40607280

100120

44647684

104124

46667886

106126

181818181818

151515151515

GE F

J

A B DC D’

H1

[Caution on Product Characteristics] ① When the center distance is moved to reduce the backlash, the V max is the maximum amount of distance that you may shift without causing problems with the gear mesh. The V max is not a recommended value to use for adjustment when assembling.

② For W6 Shaped Gears, the tolerances of the shaft diameter are set to S +0.2 and +0.1 (+0.40 and +0.35 for the ground area).③ These worms produce axial thrust forces. See page 512 for more details.

[Caution on Product Characteristics] ① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

② Duplex worms and worm wheels must be mated in a predetermined orientation, which is indicated by the arrows. Therefore, the arrow on the wheel does not indicate the mounting direction, but the rotating direction. Please refer to the Application Hints on page 515.

Specifications

Precision grade KHK W 002 grade 1Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 17° 30'

Material CAC702 （formerly JIS AℓBC2)

Heat treatment ―

Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 1Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 17° 30'

Material SCM440

Heat treatment Thermal refined, tooth surfaceinduction hardened

Tooth hardness 45～ 55HRC

517

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

JML N OK

T

S R P Q S

Vmax

G G G G

W6

Position ofreference tooth Max. allowable shift Weight

(kg)Catalog No.

S Vmax22 8 0.21 KWGDL2-R1

Outside dia. Neck dia. Shaft dia. Position ofreference tooth Max. allowable shift Weight

(kg)Catalog No.

Q R S T Vmax28 21 26 17 6 0.74 KWGDLS1.5-R135 24 30 22 8 1.17 KWGDLS2-R1

Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

242424242424

――――――

――――――

27.53539.542.55057.5

9.8420.829.335.653.875.3

8.1817.524.630.045.463.8

6.4013.919.824.236.951.9

5.3011.716.820.631.644.7

4.6810.414.918.328.340.4

4.259.40

13.516.625.836.7

3.688.28

11.914.622.632.4

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

0.10 0.22 0.320.37 0.59 0.83

AGDL1.5-20R1AGDL1.5-30R1AGDL1.5-36R1AGDL1.5-40R1AGDL1.5-50R1AGDL1.5-60R1

333333333333

――――――

――――――

35.545.551.555.565.575.5

21.044.362.375.8

115160

17.537.352.664.096.8

136

13.629.642.051.478.4

110

11.224.835.543.666.994.6

9.8421.931.338.559.584.9

8.9419.828.434.954.277.2

7.7517.425.030.747.668.1

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

0.260.510.730.861.301.88

AGDL2-20R1AGDL2-30R1AGDL2-36R1AGDL2-40R1AGDL2-50R1AGDL2-60R1

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm).

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

Duplex Worms

KWGDL・KWGDLS

Duplex Worm Wheels

AGDL

NOTE 1. Allowable torques for worm rotation (rpm)

518

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Duplex WormsModule 2.5、3KWGDL・KWGDLS

Duplex Worms WheelsModule 2.5、3AGDL

GE F

J

A B DC D’

H1

R

M

P Q

L N O

S

Vmax

G GG

G

G

G

W4

Catalog No.Nominal axial

moduleNumber of

startNominal

lead angleHand of tread Shape

Bore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length

LH7 M N O P Q RKWGDL2.5-R1 m2.5 1 3°52' R W4 18 30 37 42 48 17 65KWGDL3-R1 m3 1 3°54' R W4 20 35 44 50 54 20 74

Catalog No.Nominal axial

moduleNumber of

startNominal

lead angleHand of tread Shape

Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O PKWGDLS2.5-R1 m2.5 1 3°52' R W6 260 85 16 48 26 85 37KWGDLS3-R1 m3 1 3°54' R W6 300 100 18 54 28 100 44

Catalog No.Reduction

ratioNominal axial

moduleNo. of teeth

Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width

AH7 B C D D' E F

AGDL2.5-20R1AGDL2.5-30R1AGDL2.5-36R1AGDL2.5-40R1AGDL2.5-50R1AGDL2.5-60R1

203036405060

m2.5

203036405060

3°52'3°52'3°52'3°52'3°52'3°52'

RRRRRR

H1H1H1HBHBHB

151515151515

404045456080

507590

100125150

558095

105130155

57.582.597.5

107.5132.5157.5

222222222222

151515151515

AGDL3-20R1AGDL3-30R1AGDL3-36R1AGDL3-40R1AGDL3-50R1AGDL3-60R1

203036405060

m3

203036405060

3°54'3°54'3°54'3°54'3°54'3°54'

RRRRRR

H1H1H1HBHBHB

202020202020

505560607080

6090

108120150180

6696

114126156186

6999

117129159189

282828282828

171717171717

[Caution on Product Characteristics] ① When the center distance is moved to reduce the backlash, the V max is the maximum amount of distance that you may shift without causing problems with the gear mesh. The V max is not a recommended value to use for adjustment when assembling.

② For W6 Shaped Gears, the tolerances of the shaft diameter are set to S +0.2 and +0.1 (+0.40 and +0.35 for the ground area).③ These worms produce axial thrust forces. See page 512 for more details.

[Caution on Product Characteristics] ① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

② Duplex worms and worm wheels must be mated in a predetermined orientation, which is indicated by the arrows. Therefore, the arrow on the wheel does not indicate the mounting direction, but the rotating direction. Please refer to the Application Hints on page 515.

Specifications

Precision grade KHK W 002 grade 1Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 17° 30'

Material CAC702 （formerly JIS AℓBC2)

Heat treatment ―

Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 1Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 17° 30'

Material SCM440

Heat treatment Thermal refined, tooth surfaceinduction hardened

Tooth hardness 45～ 55HRC

519

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

JML N OK

T

S R P Q S

Vmax

G G G G

W6

Position ofreference tooth Max. allowable shift Weight

(kg)Catalog No.

S Vmax29 10 0.37 KWGDL2.5-R132 10 0.61 KWGDL3-R1

Outside dia. Neck dia. Shaft dia. Position ofreference tooth Max. allowable shift Weight

(kg)Catalog No.

Q R S T Vmax42 30 36 29 10 2.00 KWGDLS2.5-R150 34 40 32 10 2.95 KWGDLS3-R1

A B C D D’

( I )

J

GE F

(H)

CS

CS

HB＊ CS has a sand mold casting finish.

[Caution on Secondary Operations]

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

Duplex Worms

KWGDL・KWGDLS

Duplex Worm Wheels

AGDL

Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

373737373737

―――

(10)(12)(12)

―――(86)

(108)(133)

43.55663.568.58193.5

38.180.5

113138208291

31.467.194.5

115174245

24.553.175.592.4

141198

20.144.563.878.3

120170

17.639.156.068.8

106152

16.035.551.062.797.3

139

13.830.944.354.484.3

121

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

0.450.881.251.141.932.90

AGDL2.5-20R1AGDL2.5-30R1AGDL2.5-36R1AGDL2.5-40R1AGDL2.5-50R1AGDL2.5-60R1

454545454545

―――

(14)(14)(14)

―――

(106)(134)(164)

5267768297

112

65.0137193235355497

53.3114160195295415

41.590.0

128157239336

33.874.7

107131202285

29.565.593.8

115178254

26.959.585.6

105163233

22.851.273.490.1

140200

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

0.811.652.322.193.264.48

AGDL3-20R1AGDL3-30R1AGDL3-36R1AGDL3-40R1AGDL3-50R1AGDL3-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm).

520

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Duplex WormsModule 3.5、4KWGDL・KWGDLS

Duplex Worms WheelsModule 3.5、4AGDL

R

M

P Q

L N O

S

Vmax

G GG

G

G

G

W4

Catalog No.Nominal axial

moduleNumber of

startNominal

lead angleHand of tread Shape

Bore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length

LH7 M N O P Q RKWGDL3.5-R1 m3.5 1 3°47' R W4 24 44 53 60 62 23 85KWGDL4-R1 m4 1 3°41' R W4 28 50 62 70 74 26 100

Catalog No.Nominal axial

moduleNumber of

startNominal

lead angleHand of tread Shape

Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O PKWGDLS3.5-R1 m3.5 1 3°47' R W6 330 110 18 62 30 110 53KWGDLS4-R1 m4 1 3°41' R W6 360 120 16 74 30 120 62

Catalog No.Reduction

ratioNominal axial

moduleNo. of teeth

Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width

AH7 B C D D' E F

AGDL3.5-20R1AGDL3.5-30R1AGDL3.5-36R1AGDL3.5-40R1AGDL3.5-50R1AGDL3.5-60R1

203036405060

m3.5

203036405060

3°47'3°47'3°47'3°47'3°47'3°47'

RRRRRR

H1H1H1HBHBHB

202020202020

556070708090

70105126140175210

77112133147182217

80.5115.5136.5150.5185.5220.5

323232323232

181818181818

AGDL4-20R1AGDL4-30R1AGDL4-36R1AGDL4-40R1AGDL4-50R1AGDL4-60R1

203036405060

m4

203036405060

3°41'3°41'3°41'3°41'3°41'3°41'

RRRRRR

H1HBHBHBHBH5

202020202030

6065757590

120

80120144160200240

88128152168208248

92132156172212252

353535353535

202020202020

GE F

J

A B DC D’

H1

[Caution on Product Characteristics] ① When the center distance is moved to reduce the backlash, the V max is the maximum amount of distance that you may shift without causing problems with the gear mesh. The V max is not a recommended value to use for adjustment when assembling.

② For W6 Shaped Gears, the tolerances of the shaft diameter are set to S +0.2 and +0.1 (+0.40 and +0.35 for the ground area).③ These worms produce axial thrust forces. See page 512 for more details.

[Caution on Product Characteristics] ① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

② Duplex worms and worm wheels must be mated in a predetermined orientation, which is indicated by the arrows. Therefore, the arrow on the wheel does not indicate the mounting direction, but the rotating direction. Please refer to the Application Hints on page 515.

＊ H5 shape have a hub made from S45C cast iron.

Specifications

Precision grade KHK W 002 grade 1Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 17° 30'

Material CAC702 （formerly JIS AℓBC2)＊

Heat treatment ―Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 1Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 17° 30'

Material SCM440

Heat treatment Thermal refined, tooth surfaceinduction hardened

Tooth hardness 45～ 55HRC

521

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

JML N OK

T

S R P Q S

Vmax

G G G G

W6

Position ofreference tooth Max. allowable shift Weight

(kg)Catalog No.

S Vmax

37 12 1.05 KWGDL3.5-R144 14 1.67 KWGDL4-R1

Outside dia. Neck dia. Shaft dia. Position ofreference tooth Max. allowable shift Weight

(kg)Catalog No.

Q R S T Vmax60 42 48 37 12 4.72 KWGDLS3.5-R170 50 56 44 14 7.10 KWGDLS4-R1

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bot-tom land (approx. 1 to 2 mm).

＊ CS has a sand mold casting finish.

Duplex Worms

KWGDL・KWGDLS

Duplex Worm Wheels

A B C D D’

( I )

J

GE F

(H)

CS

CS

HB

( I )

J

A B C D D’

GE F

(H)

H5

AGDL

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

505050505050

―――

(15)(16)(16)

―――

(124)(155)(189)

61.57989.596.5

114131.5

98.5208293356538753

80.4172242295446627

62.5136193236360506

50.4111160196301425

44.298.1

141173267381

40.088.3

127156243345

33.775.7

109133207296

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

1.242.513.613.345.026.87

AGDL3.5-20R1AGDL3.5-30R1AGDL3.5-36R1AGDL3.5-40R1AGDL3.5-50R1AGDL3.5-60R1

555555555555

―(17)(17)(17)(17)(17)

―(99)

(121)(137)(177)(200)

7191

103111131151

134284400486735

1030

109234329400605851

84.8184262320488687

67.9150215264405572

59.7132190233361515

53.4118170208324461

44.8101144177275393

0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045

1.763.014.184.787.07

11.5

AGDL4-20R1AGDL4-30R1AGDL4-36R1AGDL4-40R1AGDL4-50R1AGDL4-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

522

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Ground Worm ShaftsModule 0.5、0.8KWG

Worm WheelsModule 0.5、0.8AG

JMK O

P QS S

G G GG

W5

Catalog No.Axial

moduleNumber of

startLead angle Hand of tread Shape

Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O P

KWG0.5-R1KWG0.5-R2

m0.512

3°11'6°20'

RR

W5W5

6565

1919

――

1212

――

3434

99

KWG0.8-R1KWG0.8-R2

m0.812

3°49'7°36'

RR

W5W5

8585

2525

――

2020

――

4040

1212

J

GE F

A B C D’

HA

① These worms produce axial thrust forces. See page 512 for more details.

① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

Catalog No.Reduction

ratioTransverse

moduleNo. of teeth

Number of start

Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width

AH7 B C D D' E

AG0.5-20R1AG0.5-20R2AG0.5-30R1AG0.5-30R2AG0.5-40R1

2010301540

m0.5

2020303040

12121

3°11'6°20'3°11'6°20'3°11'

RRRRR

HAHAHAHAHA

44445

99

121215

1010151520

―――――

1111161621

55555

AG0.5-50R1AG0.5-60R1

5060

5060

11

3°11'3°11'

RR

HAHA

55

2025

2530

――

2631

55

AG0.8-20R1AG0.8-20R2AG0.8-30R1AG0.8-30R2AG0.8-40R1

2010301540

m0.8

2020303040

12121

3°49'7°36'3°49'7°36'3°49'

RRRRR

HAHAHAHAHA

55556

1212181820

1616242432

―――――

17.617.625.625.633.6

88888

AG0.8-50R1AG0.8-60R1

5060

5060

11

3°49'3°49'

RR

HAHA

88

2525

4048

――

41.649.6

88

[Caution on Product Characteristics]

[Caution on Product Characteristics]

Specifications

Precision grade KHK W 002 grade 2Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 20°

Material CAC702 （formerly JIS AℓBC2)

Heat treatment ―Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 2Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 20°

Material SCM440

Heat treatment Thermal refined, tooth surfaceinduction hardened

Tooth hardness 45～ 55HRC

523

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

Outside dia. Neck dia. Shaft dia. Weight

(kg)Catalog No.

Q R Sh7

1010

――

66

0.0180.018

KWG0.5-R1KWG0.5-R2

13.613.6

――

88

0.0430.043

KWG0.8-R1KWG0.8-R2

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm). Use carbide tools for the modification of the shaft area near the bottom land.

Ground Worm Shafts

KWG

Worm Wheels

AGDL

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

77777

1212121212

―――――

―――――

9.59.5

121214.5

0.520.511.091.091.86

0.440.420.940.921.60

0.360.330.770.731.34

0.300.270.650.601.15

0.260.240.580.541.02

0.240.220.530.490.94

0.210.190.480.430.84

0.02~0.140.02~0.140.02~0.140.02~0.140.02~0.14

0.00560.00560.0120.0120.020

AG0.5-20R1AG0.5-20R2AG0.5-30R1AG0.5-30R2AG0.5-40R1

77

1212

――

――

1719.5

2.823.94

2.423.41

2.052.89

1.772.50

1.582.26

1.462.08

1.301.87

0.02~0.140.02~0.14

0.0350.053

AG0.5-50R1AG0.5-60R1

88888

1616161616

―――――

―――――

1414181822

1.781.763.773.756.45

1.501.443.213.145.49

1.211.112.622.464.55

1.000.912.202.023.87

0.880.801.961.803.46

0.820.741.811.653.19

0.710.631.611.452.83

0.06~0.170.06~0.170.06~0.170.06~0.170.06~0.17

0.0180.0180.0430.0430.068

AG0.8-20R1AG0.8-20R2AG0.8-30R1AG0.8-30R2AG0.8-40R1

88

1616

――

――

2630

9.7513.6

8.3111.7

6.949.77

5.948.39

5.347.63

4.967.05

4.386.27

0.06~0.170.06~0.17

0.100.14

AG0.8-50R1AG0.8-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

524

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Ground Worm ShaftsModule 1、1.5KWG

Worm WheelsModule 1、1.5AG

JM NLK O

S R P Q S

GGGG

W6

Catalog No.Axial

moduleNumber of

startLead angle Hand of tread Shape

Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O P

KWG1-R1KWG1-R2

m112

3°35'7°08'

RR

W6W6

140140

3535

1010

3030

1010

5555

1616

KWG1.5-R1KWG1.5-R2

m1.512

3°26'6°51'

RR

W6W6

190190

5050

1515

4040

1515

7070

2525

GE F

J

A B D’DC

H1

① For W6 Shaped Gears, the tolerances of the shaft diameter are set to S +0.2 and +0.1 (+0.40 and +0.35 for the ground area).② These worms produce axial thrust forces. See page 512 for more details.

① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

Catalog No.Reduction

ratioTransverse

moduleNo. of teeth

Number of start

Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width

AH7 B C D D' E

AG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1

2010301540

m1

2020303040

12121

3°35'7°08'3°35'7°08'3°35'

RRRRR

H1H1H1H1H1

66668

1616202026

2020303040

2222323242

2323333343

1010101010

AG1-50R1AG1-60R1

5060

5060

11

3°35'3°35'

RR

H1H1

810

3035

5060

5262

5363

1010

AG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1

2010301540

m1.5

2020303040

12121

3°26'6°51'3°26'6°51'3°26'

RRRRR

H1H1H1H1H1

88

101012

2222303035

3030454560

3333484863

34.534.549.549.564.5

1414141414

AG1.5-50R1AG1.5-60R1

5060

5060

11

3°26'3°26'

RR

H1H1

1212

4550

7590

7893

79.594.5

1414

[Caution on Product Characteristics]

[Caution on Product Characteristics]

Specifications

Precision grade KHK W 002 grade 2Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 20°

Material CAC702 （formerly JIS AℓBC2)

Heat treatment ―Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 2Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 20°

Material SCM440

Heat treatment Thermal refined, tooth surfaceinduction hardened

Tooth hardness 45～ 55HRC

525

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

Outside dia. Neck dia. Shaft dia. Weight

(kg)Catalog No.

Q R S

1818

1313

1818

0.250.25

KWG1-R1KWG1-R2

2828

2121

2626

0.740.74

KWG1.5-R1KWG1.5-R2

① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm). Use carbide tools for the modification of the shaft area near the bottom land.

[Caution on Secondary Operations]

Ground Worm Shafts

KWG

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

1010101010

2020202020

―――――

―――――

1818232328

3.353.317.087.03

12.1

2.792.695.985.84

10.2

2.232.064.844.568.43

1.831.684.053.727.12

1.631.483.633.336.38

1.501.353.313.035.86

1.301.152.922.635.13

0.08~0.190.08~0.190.08~0.190.08~0.190.08~0.19

0.0380.0380.0780.0780.13

AG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1

1010

2020

――

――

3338

18.325.6

15.521.8

12.918.1

10.915.4

9.8714.1

9.0912.9

7.9511.4

0.08~0.190.08~0.19

0.200.29

AG1-50R1AG1-60R1

1010101010

2424242424

―――――

―――――

27.5 27.5 353542.5

9.849.72

20.820.735.6

8.187.87

17.517.130.0

6.405.92

13.913.124.2

5.304.87

11.710.820.6

4.684.25

10.49.56

18.3

4.253.839.408.58

16.6

3.683.278.287.46

14.6

0.10~0.210.10~0.210.10~0.210.10~0.210.10~0.21

0.100.100.220.220.37

AG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1

1010

2424

――

――

5057.5

53.875.3

45.463.8

36.951.9

31.644.7

28.340.4

25.836.7

22.632.4

0.10~0.210.10~0.21

0.590.83

AG1.5-50R1AG1.5-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

Worm Wheels

AG

526

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Ground Worm ShaftsModule 2、2.5KWG

Worm WheelsModule 2、2.5AGF

JM NLK O

S R P Q S

GGGG

W6

Catalog No.Axial

moduleNumber of

startLead angle Hand of tread Shape

Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O P

KWG2-R1KWG2-R2

m212

5°12'10°18'

RR

W6W6

200200

3535

2525

4040

2525

7575

2222

KWG2.5-R1KWG2.5-R2

m2.512

4°46'9°28'

RR

W6W6

250250

5050

2727

4646

2727

100100

3030

Catalog No.Reduction

ratioTransverse

moduleNo. of teeth

Number of start

Profile shiftcoefficient

Helix angle

Hand of tread

ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width(R)

AH7 B C D D' E FAGF2-20R1AGF2-20R2AGF2-25R1AGF2-30R1AGF2-30R2

2010253015

m2

2020253030

12112

−0.5−0.5−0.5−0.5−0.5

5°12'10°18'

5°12'5°12'

10°18'

RRRRR

H6H6H6H6H6

1212121212

3232353838

4040506060

4242526262

4444546464

1818181818

1212121212

AGF2-36R1AGF2-40R1AGF2-48R1AGF2-50R1AGF2-60R1

3640485060

3640485060

11111

0−0.5+0.5−0.5−0.5

5°12'5°12'5°12'5°12'5°12'

RRRRR

H6H8H9H9H9

1212121212

4045505050

728096

100120

7682

102102122

7884

104104124

1818181818

1212121212

AGF2.5-20R1AGF2.5-20R2AGF2.5-

2010253015

m2.5

2020253030

12112

00000

4°46'9°28'4°46'4°46'9°28'

RRRRR

H6H6H6H6H6

1212121212

3535404040

505062.57575

555567.58080

57.557.57082.582.5

2020202020

1515151515

AGF2.5-36R1AGF2.5-40R1AGF2.5-

3640485060

3640485060

11111

00000

4°46'4°46'4°46'4°46'4°46'

RRRRR

H8H9H9H9H9

1212121212

4545505560

90100120125150

95105125130155

97.5107.5127.5132.5157.5

2020202020

1515151515

GEF’ F

A B C D D’

J

H6

① For W6 Shaped Gears, the tolerances of the shaft diameter are set to S +0.2 and +0.1 (+0.40 and +0.35 for the ground area).② These worms produce axial thrust forces. See page 512 for more details.

[Caution on Product Characteristics]

[Caution on Product Characteristics] ① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

② There may be space in the casting between the two materials, but it will not affect the joint strength.

＊ H8, H9 shape have a hub made from FC200 cast iron.

Specifications

Precision grade KHK W 002 grade 2Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 20°

Material CAC702 （formerly JIS AℓBC2)＊

Heat treatment ―

Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 2Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 20°

Material SCM440

Heat treatment Thermal refined, tooth surfaceinduction hardened

Tooth hardness 45～ 55HRC

527

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

Outside dia. Neck dia. Shaft dia. Weight

(kg)Catalog No.

Q R S

2626

1717

2525

0.640.64

KWG2-R1KWG2-R2

3535

2323

3030

1.271.27

KWG2.5-R1KWG2.5-R2

① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm). Use carbide tools for the modification of the shaft area near the bottom land.

[Caution on Secondary Operations]

＊ CS has a sand mold casting finish.

Ground Worm Shafts

KWG

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② The tooth and the hub areas, fastened by casting, are designed to have higher hardness than other parts of the gear. However, please avoid areas other than the hub. Also, the strength may decrease if secondary operations are performed.

Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

55555

3535353535

―――――

―――――

3030354040

19.419.929.441.142.3

16.116.124.534.535.0

12.812.219.627.727.0

10.59.99

16.323.222.1

9.308.75

14.420.719.9

8.497.92

13.218.817.7

7.316.74

11.416.415.4

0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24

0.250.250.370.510.51

AGF2-20R1AGF2-20R2AGF2-25R1AGF2-30R1AGF2-30R2

55555

3535353535

――

(10)(12)(12)

――

(76)(81)(96)

4750606070

57.870.398.5

106149

48.659.283.089.5

126

39.348.168.073.4

103

33.240.757.962.588.4

29.636.451.956.280.3

27.033.247.551.573.3

23.628.941.344.964.2

0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24

0.730.851.141.141.51

AGF2-36R1AGF2-40R1AGF2-48R1AGF2-50R1AGF2-60R1

55555

4040404040

―――――

―――――

404046.2552.552.5

35.134.653.074.173.6

29.027.943.962.060.6

22.620.934.849.146.2

18.617.128.941.237.8

16.314.825.336.733.2

14.813.423.032.829.9

12.811.320.028.725.8

0.14~0.270.14~0.270.14~0.270.14~0.270.14~0.27

0.440.440.660.870.87

AGF2.5-20R1AGF2.5-20R2AGF2.5-25R1AGF2.5-30R1AGF2.5-30R2

55555

4040404040

―(12)(13)(13)(13)

―(80)(97)

(100)(125)

60657577.590

104127178192268

87.4106149161226

69.885.4

121130183

59.072.4

103111157

51.863.790.898.4

141

47.157.983.190.0

128

41.250.572.278.3

112

0.14~0.270.14~0.270.14~0.270.14~0.270.14~0.27

1.191.231.721.922.59

AGF2.5-36R1AGF2.5-40R1AGF2.5-48R1AGF2.5-50R1AGF2.5-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

Worm Wheels

J

GE FF’

A B C D D’

H8

( I )

J

A B DC D’

GEF’ F

(H)

CS

CS

H9

AG

528

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Ground Worm ShaftsModule 3、4KWG

Worm WheelsModule 3、4AGF

JM NLK O

S R P Q S

GGGG

W6

Catalog No.Axial

moduleNumber of

startLead angle Hand of tread Shape

Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O P

KWG3-R1KWG3-R2

m312

4°31'8°58'

RR

W6W6

300300

5555

3030

6060

3030

125125

3838

KWG4-R1KWG4-R2

m412

5°43'11°19'

RR

W6W6

360360

7070

32.532.5

7575

32.532.5

150150

4040

Catalog No.Reduction

ratioTransverse

moduleNo. of teeth

Number of start

Profile shiftcoefficient

Helix angle

Hand of tread

ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width(R)

AH7 B C D D' E FAGF3-20R1AGF3-20R2AGF3-25R1AGF3-30R1AGF3-30R2

2010253015

m3

2020253030

12112

+0.333+0.333

0+0.333+0.333

4°31'8°58'4°31'4°31'8°58'

RRRRR

H6H6H6H8H8

2020202020

5050555555

6060759090

6868819898

717184

101101

2525252525

17.517.517.517.517.5

AGF3-36R1AGF3-40R1AGF3-48R1AGF3-50R1AGF3-60R1

3640485060

3640485060

11111

+0.333+0.333+0.333+0.333+0.333

4°31'4°31'4°31'4°31'4°31'

RRRRR

H8H9H9H9H9

2020202020

6065707580

108120144150180

116128152158188

119131155161191

2525252525

17.517.517.517.517.5

AGF4-20R1AGF4-20R2AGF4-25R1AGF4-30R1AGF4-30R2

2010253015

m4

2020253030

12112

00000

5°43'11°19'

5°43'5°43'

11°19'

RRRRR

H6H6H6H8H8

2020202020

6060656565

8080

100120120

8888

108128128

9292

112132132

3030303030

2020202020

AGF4-36R1AGF4-40R1AGF4-48R1AGF4-50R1AGF4-60R1

3640485060

3640485060

11111

00000

5°43'5°43'5°43'5°43'5°43'

RRRRR

H9H9H9H9H0

20202020

160

70809090―

144160192200240

152168200208248

156172204212252

3030303030

20202020

7

GEF’ F

A B C D D’

J

H6

[Caution on Product Characteristics] ① For W6 Shaped Gears, the tolerances of the shaft diameter are set to S +0.2 and +0.1 (+0.40 and +0.35 for the ground area).② These worms produce axial thrust forces. See page 512 for more details.

[Caution on Product Characteristics] ① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

② There may be space in the casting between the two materials, but it will not affect the joint strength.

＊ H8, H9 shape have a hub made from FC200 cast iron.

Specifications

Precision grade KHK W 002 grade 2Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 20°

Material CAC702 （formerly JIS AℓBC2)＊

Heat treatment ―Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 2Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 20°

Material SCM440

Heat treatment Thermal refined, tooth surfaceinduction hardened

Tooth hardness 45～ 55HRC

529

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

Outside dia. Neck dia. Shaft dia. Weight

(kg)Catalog No.

Q R S

4444

3030

4040

2.662.66

KWG3-R1KWG3-R2

4848

2929

4545

3.853.85

KWG4-R1KWG4-R2

＊ CS has a sand mold casting finish.

Ground Worm Shafts

KWG

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② The tooth and the hub areas, fastened by casting, are designed to have higher hardness than other parts of the gear. However, please avoid areas other than the hub. Also, the strength may decrease if secondary operations are performed.

Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

7.57.57.57.57.5

5050505050

―――――

―――――

505056.56565

59.760.290.2

126128

49.148.274.3

105105

38.336.158.883.179.8

31.529.548.969.665.2

27.525.442.661.057.2

25.123.039.055.451.6

21.519.433.548.244.3

0.16~0.290.16~0.290.16~0.290.16~0.290.16~0.29

0.880.881.241.631.63

AGF3-20R1AGF3-20R2AGF3-25R1AGF3-30R1AGF3-30R2

7.57.57.57.57.5

5050505050

―(16)(15)(15)(15)

―(95)

(120)(125)(155)

74809295

110

178216303326457

148180252272383

118145204220310

99.7122174188265

87.5108153166237

79.498.0

141152217

69.184.9

121132188

0.16~0.290.16~0.290.16~0.290.16~0.290.16~0.29

2.252.523.283.624.76

AGF3-36R1AGF3-40R1AGF3-48R1AGF3-50R1AGF3-60R1

1010101010

6060606060

―――――

―――――

6060708080

123127186260270

101101153216220

78.876.0

121171168

64.661.9

100143137

56.353.287.3

125120

51.548.379.9

114108

43.840.568.598.492.2

0.19~0.320.19~0.320.19~0.320.19~0.320.19~0.32

1.771.772.563.283.28

AGF4-20R1AGF4-20R2AGF4-25R1AGF4-30R1AGF4-30R2

1010101015

6060606030

(20)(23)(20)(20)

8

(113)(128)(160)(168)204

92100116120140

366445624673941

304370519560788

243297420454638

204251356385544

179220314340486

164201288312444

141173248269385

0.19~0.320.19~0.320.19~0.320.19~0.320.19~0.32

4.105.256.957.353.60

AGF4-36R1AGF4-40R1AGF4-48R1AGF4-50R1AGF4-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm). Use carbide tools for the modification of the shaft area near the bottom land.

[Caution on Secondary Operations]

Worm Wheels

HEF’

JI A C D D’

F

H0

J

GE FF’

A B C D D’

H8

( I )

J

A B DC D’

GEF’ F

(H)

CS

CS

H9

AGF

530

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Ground Worm ShaftsModule 5、6KWG

Specifications

Precision grade KHK W 001 grade 2Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 20°

Material SCM440

Heat treatment Thermal refined, tooth surfaceinduction hardened

Tooth hardness 45～ 55HRC

Worm WheelsModule 5、6AGF

JM NLK O

S R P Q S

GGGG

W6

Catalog No. Axial module

Number of start

Lead angle Hand of tread ShapeTotal length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.

J K L M N O PKWG5-R1 m5 1 5°43' R W6 400 75 30 90 30 175 50KWG6-R1 m6 1 5°43' R W6 400 60 40 100 40 160 60

Catalog No.Reduction

ratioTransverse

moduleNo. of teeth

Number of start

Profile shiftcoefficient

Helix angle

Hand of tread

ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width(R)

AH7 B C D D' E FAGF5-20R1AGF5-25R1AGF5-30R1AGF5-36R1AGF5-40R1

2025303640 m5

2025303640

11111

00000

5°43'5°43'5°43'5°43'5°43'

RRRRR

H6H6H9H9H9

2222222222

75757590

110

100125150180200

110135160190210

115140165195215

3535353535

2323232323

AGF5-48R1AGF5-50R1AGF5-60R1

485060

485060

111

000

5°43'5°43'5°43'

RRR

H0H0H0

140150200

―――

240250300

250260310

255265315

353535

7.57.57.5

AGF6-20R1AGF6-25R1AGF6-30R1AGF6-36R1AGF6-40R1

2025303640 m6

2025303640

11111

00000

5°43'5°43'5°43'5°43'5°43'

RRRRR

H6H6H9H9H0

25252525

130

8590

100110―

120150180216240

132162192228252

138168198234258

4040404040

23232323

8AGF6-48R1AGF6-50R1AGF6-60R1

485060

485060

111

000

5°43'5°43'5°43'

RRR

H0H0H0

180190250

―――

288300360

300312372

306318378

404040

888

GEF’ F

A B C D D’

J

H6＊ H8, H9 shape have a hub made from FC200 cast iron.

[Caution on Product Characteristics] ① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

② There may be space in the casting between the two materials, but it will not affect the joint strength.

[Caution on Product Characteristics] ① For W6 Shaped Gears, the tolerances of the shaft diameter are set to S +0.2 and +0.1 (+0.40 and +0.35 for the ground area).② These worms produce axial thrust forces. See page 512 for more details.

Specifications

Precision grade KHK W 002 grade 2Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 20°

Material CAC702 （formerly JIS AℓBC2)＊

Heat treatment ―Tooth hardness ―

531

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

Outside dia. Neck dia. Shaft dia. Weight

(kg)Catalog No.

Q R S60 36 50 5.75 KWG5-R172 44 60 8.09 KWG6-R1

HEF’

JI A C D D’

F

H0

( I )

J

A B DC D’

GEF’ F

(H)

CS

CS

H9＊ CS has a sand mold casting finish.

① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or sec-ondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② The tooth and the hub areas, fastened by casting, are designed to have higher hardness than other parts of the gear. However, please avoid areas other than the hub. Also, the strength may decrease if secondary operations are per-formed.

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bot-tom land (approx. 1 to 2 mm). Use carbide tools for the modification of the shaft area near the bottom land.

Ground Worm Shafts

KWG

Worm WheelsAGF

[Caution on Secondary Operations]

Hub width (L) Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F' G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

1212121212

7070707070

――

(25)(25)(26)

――

(115)(140)(162)

7587.5

100115125

211319446627763

172261369519632

134206291414506

108168239343421

95.0147211302371

86.2134191274337

72.7114164234288

0.22~0.350.22~0.350.22~0.350.22~0.350.22~0.35

3.264.485.377.709.97

AGF5-20R1AGF5-25R1AGF5-30R1AGF5-36R1AGF5-40R1

17.517.517.5

353535

101010

195205255

145150175

107011501610

886956

1340

715772

1090

598646913

530574820

483523744

411446639

0.22~0.350.22~0.350.22~0.35

5.045.286.48

AGF5-48R1AGF5-50R1AGF5-60R1

1212121220

7575757540

――

(30)(30)12

――

(135)(172)190

90105120138150

329497696978

1190

268405572806981

208319451641784

167259368528648

146227325466572

131204290417513

110173248355436

0.24~0.370.24~0.370.24~0.370.24~0.370.24~0.37

4.957.149.21

12.56.20

AGF6-20R1AGF6-25R1AGF6-30R1AGF6-36R1AGF6-40R1

202020

404040

121212

240250310

174180210

167018002520

138014802090

111012001680

920994

1410

816885

1260

735796

1130

628676969

0.24~0.370.24~0.370.24~0.37

7.588.00

10.0

AGF6-48R1AGF6-50R1AGF6-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

532

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Ground WormsModule 1、1.5SWG

Worm WheelsModule 1、1.5AG

Catalog No.● : J Series (Available-on-request)

Axialmodule

Number of start

Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)

LH7 M N O P Q Q'

SWG1-R1 SWG1-R2

m112

3°35'7°08'

RR

W2W2

88

――

1616

1818

――

――

――

SWG1.5-R1

•SWG1.5-R1J10m1.5

1 3°26' RW1W1K

1010

20 25 28 30 10 ―

SWG1.5-R2

•SWG1.5-R2J102 6°51' R

W1W1K

1010

20 25 28 30 10 ―

RS

N OL

G

W2

GE F

J

A B D’DC

H1

Catalog No.Reduction

ratioTransverse

moduleNo. of teeth

Number of start

Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width

AH7 B C D D' E

AG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1

2010301540

m1

2020303040

12121

3°35'7°08'3°35'7°08'3°35'

RRRRR

H1H1H1H1H1

66668

1616202026

2020303040

2222323242

2323333343

1010101010

AG1-50R1AG1-60R1

5060

5060

11

3°35'3°35'

RR

H1H1

810

3035

5060

5262

5363

1010

AG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1

2010301540

m1.5

2020303040

12121

3°26'6°51'3°26'6°51'3°26'

RRRRR

H1H1H1H1H1

88

101012

2222303035

3030454560

3333484863

34.534.549.549.564.5

1414141414

AG1.5-50R1AG1.5-60R1

5060

5060

11

3°26'3°26'

RR

H1H1

1212

4550

7590

7893

79.594.5

1414

[Caution on Product Characteristics] ① For W2-shaped products, a set screw is included. When setting up the mating wheel, make sure no friction occurs within the set screw.

② These worms produce axial thrust forces. See page 512 for more details.[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns.

Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm).

① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

[Caution on Product Characteristics]

Specifications

Precision grade KHK W 002 grade 2Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 20°

Material CAC702 （formerly JIS AℓBC2)

Heat treatment ―Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 2 ＊Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 20°

Material S45C

Heat treatment Teeth induction hardened

Tooth hardness 45～ 55HRC

＊ The precision grade of J Series products is equiva-lent to the value shown in the table.

533

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

Total length Keyway Set screw Weight

(kg)Catalog No.

● : J Series (Available-on-request)R Width×Depth Size S

3232

――

M4M4

55

0.0370.037

SWG1-R1 SWG1-R2

40 ―4 x 1.8

―M4

―5

0.120.11

SWG1.5-R1

•SWG1.5-R1J10

40 ―4 x 1.8

―M4

―5

0.120.11

SWG1.5-R2

•SWG1.5-R2J10

① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or sec-ondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

[Caution on Secondary Operations]

Ground Worms

SWG

Newly addedNewly addedR

P Q

L M N O

G

W1

S

RP Q

L M N O

G

W1K

Worm Wheels

AG

Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

1010101010

2020202020

―――――

―――――

1818232328

3.353.317.087.03

12.1

2.792.695.985.84

10.2

2.232.064.844.568.43

1.831.684.053.727.12

1.631.483.633.336.38

1.501.353.313.035.86

1.301.152.922.635.13

0.08~0.190.08~0.190.08~0.190.08~0.190.08~0.19

0.0380.0380.0780.0780.13

AG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1

1010

2020

――

――

3338

18.325.6

15.521.8

12.918.1

10.915.4

9.8714.1

9.0912.9

7.9511.4

0.08~0.190.08~0.19

0.200.29

AG1-50R1AG1-60R1

1010101010

2424242424

―――――

―――――

27.5 27.5 353542.5

9.849.72

20.820.735.6

8.187.87

17.517.130.0

6.405.92

13.913.124.2

5.304.87

11.710.820.6

4.684.25

10.49.56

18.3

4.253.839.408.58

16.6

3.683.278.287.46

14.6

0.10~0.210.10~0.210.10~0.210.10~0.210.10~0.21

0.100.100.220.220.37

AG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1

1010

2424

――

――

5057.5

53.875.3

45.463.8

36.951.9

31.644.7

28.340.4

25.836.7

22.632.4

0.10~0.210.10~0.21

0.590.83

AG1.5-50R1AG1.5-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

Series

[Caution on J series] ① As available-on-request products, requires a lead-time for shipping within 3 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.③ Keyways are made according to JIS B1301 standards, Js 9 tolerance.④ Areas of products which have been re-worked will not be black oxide coated.⑤ For products having a tapped hole, a set screw is included.

534

Sp

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ears

Hel

ical

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tern

alG

ears

Rac

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P R

acks

& P

inio

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iter

Gea

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evel

Gea

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crew

Gea

rsW

orm

Gea

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air

Bev

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earb

oxes

Oth

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rod

ucts

Ground WormsModule 2、2.5SWG

Worm WheelsModule 2、2.5AG

R

P QQ’

L M N O

G

W3

Catalog No.Reduction

ratioTransverse

moduleNo. of teeth

Number of start

Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width

AH7 B C D D' E

AG2-20R1AG2-20R2AG2-30R1AG2-30R2AG2-40R1

2010301540

m2

2020303040

12121

3°41'7°21'3°41'7°21'3°41'

RRRRR

H1H1H4H4H4

1212121212

3333404045

4040606080

4444646484

4646666686

1818181818

AG2-50R1AG2-60R1

5060

5060

11

3°41'3°41'

RR

H5H5

1212

5055

100120

104124

106126

1818

AG2.5-20R1AG2.5-20R2AG2.5-30R1AG2.5-30R2AG2.5-40R1

2010301540

m2.5

2020303040

12121

3°52'7°42'3°52'7°42'3°52'

RRRRR

H1H1H4H4H5

1212121215

3535404045

50507575

100

55558080

105

57.557.582.582.5

107.5

2020202020

AG2.5-50R1AG2.5-60R1

5060

5060

11

3°52'3°52'

RR

H5H5

1515

5560

125150

130155

132.5157.5

2020

Catalog No.● : J Series (Available-on-request)

Axialmodule

Number of start

Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)

LH7 M N O P Q Q'SWG2-R1

•SWG2-R1J12

•SWG2-R1J14m2

1 3°41' RW3W3KW3K

121214

25 31 35 32 15 3

SWG2-R2

•SWG2-R2J12

•SWG2-R2J142 7°21' R

W3W3KW3K

121214

25 31 35 32 15 3

SWG2.5-R1

•SWG2.5-R1J15

•SWG2.5-R1J16m2.5

1 3°52' RW3W3KW3K

151516

30 37 42 45 17 3

SWG2.5-R2

•SWG2.5-R2J15

•SWG2.5-R2J162 7°42' R

W3W3KW3K

151516

30 37 42 45 17 3

GE F

J

A B D’DC

H1

[Caution on Product Characteristics] ① These worms produce axial thrust forces. See page 512 for more details.

＊ H8, H9 shape have a hub made from FC200 cast iron.

[Caution on Product Characteristics] ① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

② There may be space in the casting between the two materials, but it will not affect the joint strength.

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm).

Specifications

Precision grade KHK W 002 grade 2Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 20°

Material CAC702 （formerly JIS AℓBC2)＊

Heat treatment ―Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 2 ＊Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 20°

Material S45C

Heat treatment Teeth induction hardened

Tooth hardness 45～ 55HRC

＊ The precision grade of J Series products is equiva-lent to the value shown in the table.

535

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

Total length Keyway Set screw Weight

(kg)Catalog No.

● : J Series (Available-on-request)R Width×Depth Size S

50―

4 x 1.85 x 2.3

―M4M4

―7.57.5

0.210.210.19

SWG2-R1

•SWG2-R1J12

•SWG2-R1J14

50―

4 x 1.85 x 2.3

―M4M4

―7.57.5

0.210.210.19

SWG2-R2

•SWG2-R2J12

•SWG2-R2J14

65―

5 x 2.35 x 2.3

―M4M4

―8.58.5

0.400.390.38

SWG2.5-R1

•SWG2.5-R1J15

•SWG2.5-R1J16

65―

5 x 2.35 x 2.3

―M4M4

―8.58.5

0.400.390.38

SWG2.5-R2

•SWG2.5-R2J15

•SWG2.5-R2J16

J

G

B C D D’

E F

A

H4

( I )

J

A B C D D’

GE F

(H)

CS

CS H5

Ground Worms

SWG

Newly addedNewly added

Series

R

P QQ’

L M N O

GS

W3K

Worm Wheels

AG

Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

1515151515

3333333333

―――――

―――――

35.5 35.5 45.5 45.5 55.5

21.020.744.344.075.8

17.516.837.336.564.0

13.612.629.627.851.4

11.210.324.822.843.6

9.848.93

21.920.138.5

8.948.05

19.818.034.9

7.756.89

17.415.730.7

0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24

0.260.260.510.510.85

AG2-20R1AG2-20R2AG2-30R1AG2-30R2AG2-40R1

1515

3333

(8)(11)

(83)(100)

65.5 75.5

115160

96.8136

78.4110

66.994.6

59.584.9

54.277.2

47.668.1

0.11~0.240.11~0.24

1.051.52

AG2-50R1AG2-60R1

1414141414

3434343434

――――

(11)

――――

(81)

43.5 43.5 565668.5

34.634.273.272.7

125

28.527.461.059.6

105

22.320.648.345.584.0

18.316.840.537.271.2

16.014.535.532.662.5

14.613.132.229.457.0

12.511.128.125.349.5

0.14~0.270.14~0.270.14~0.270.14~0.270.14~0.27

0.390.390.790.791.11

AG2.5-20R1AG2.5-20R2AG2.5-30R1AG2.5-30R2AG2.5-40R1

1414

3434

(12)(12)

(106)(130)

8193.5

189265

158222

128180

109154

96.7138

88.5126

76.7110

0.14~0.270.14~0.27

1.702.32

AG2.5-50R1AG2.5-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or sec-ondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② The tooth and the hub areas, fastened by casting, are designed to have higher hardness than other parts of the gear. However, please avoid areas other than the hub. Also, the strength may decrease if secondary operations are per-formed.

[Caution on Secondary Operations]

[Caution on J series] ① As available-on-request products, requires a lead-time for shipping within 3 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.③ Keyways are made according to JIS B1301 standards, Js 9 tolerance.④ Areas of products which have been re-worked will not be black oxide coated.⑤ For products having a tapped hole, a set screw is included.

536

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Ground WormsModule 3、4SWG

Specifications

Precision grade KHK W 001 grade 2 ＊Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 20°

Material S45C

Heat treatment Teeth induction hardened

Tooth hardness 45～ 55HRC

Worm WheelsModule 3、4

Specifications

Precision grade KHK W 002 grade 2Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 20°

Material CAC702 （formerly JIS AℓBC2)＊

Heat treatment ―Tooth hardness ―

R

P QQ’

L M N O

G

W3

Catalog No.Reduction

ratioTransverse

moduleNo. of teeth

Number of start

Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width

AH7 B C D D' EAG3-20R1AG3-20R2AG3-30R1AG3-30R2AG3-30R3

2010301510 m3

2020303030

12123

3°54'7°46'3°54'7°46'

11°34'

RRRRR

H1H1H4H4H4

2020202020

5050555555

6060909090

6666969696

6969999999

2525252525

AG3-40R1AG3-45R3AG3-50R1AG3-60R1

40155060

40455060

1311

3°54'11°34'

3°54'3°54'

RRRR

H5H5H5H5

20202020

65707585

120135150180

126141156186

129144159189

25252525

AG4-20R1AG4-20R2AG4-30R1AG4-30R2AG4-30R3

2010301510 m4

2020303030

12123

3°41'7°21'3°41'7°21'

10°57'

RRRRR

H1H1H4H4H4

2020202020

6060656565

8080

120120120

8888

128128128

9292

132132132

3030303030

AG4-40R1AG4-45R3AG4-50R1AG4-60R1

40155060

40455060

1311

3°41'10°57'

3°41'3°41'

RRRR

H5H5H5H5

20202020

809090

100

160180200240

168188208248

172192212252

30303030

Catalog No.● : J Series (Available-on-request)

Axialmodule

Number of start

Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)

LH7 M N O P Q Q'

SWG3-R1

•SWG3-R1J18

•SWG3-R1J19

•SWG3-R1J20

m3

1 3°54' R

W3W3KW3KW3K

16181920

35 44 50 50 20 4

SWG3-R2

•SWG3-R2J18

•SWG3-R2J19

•SWG3-R2J20

2 7°46' R

W3W3KW3KW3K

16181920

35 44 50 50 20 4

SWG3-R3

•SWG3-R3J18

•SWG3-R3J19

•SWG3-R3J20

3 11°34' R

W3W3KW3KW3K

16181920

35 44 50 50 20 4

SWG4-R1SWG4-R2SWG4-R3

m4123

3°41'7°21'

10°57'

RRR

W3W3W3

222222

505050

626262

707070

707070

252525

555

[Caution on Product Characteristics] ① These worms produce axial thrust forces. See page 512 for more details.

＊ H8, H9 shape have a hub made from FC200 cast iron.

[Caution on Product Characteristics] ① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

② There may be space in the casting between the two materials, but it will not affect the joint strength.

AG

GE F

J

A B D’DC

H1

＊ The precision grade of J Series products is equiva-lent to the value shown in the table.

537

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& P

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Gea

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crew

Gea

rsW

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Gea

r P

air

Bev

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Oth

erP

rod

ucts

To find information on new products, see Page 6 and 7.

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or sec-ondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② The tooth and the hub areas, fastened by casting, are designed to have higher hardness than other parts of the gear. However, please avoid areas other than the hub. Also, the strength may decrease if secondary operations are per-formed.

[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 512) when performing modifications and/or secondary operations for safety concerns. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.

② Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm).

Ground Worms

SWG

Newly addedNewly addedR

P QQ’

L M N O

GS

W3K

Series

Total length Keyway Set screw Weight

(kg)Catalog No.

● : J Series (Available-on-request)R Width×Depth Size S

74

―6 x 2.86 x 2.86 x 2.8

―M5M5M5

―101010

0.660.620.600.58

SWG3-R1

•SWG3-R1J18

•SWG3-R1J19

•SWG3-R1J20

74

―6 x 2.86 x 2.86 x 2.8

―M5M5M5

―101010

0.660.620.600.58

SWG3-R2

•SWG3-R2J18

•SWG3-R2J19

•SWG3-R2J20

74

―6 x 2.86 x 2.86 x 2.8

―M5M5M5

―101010

0.660.620.600.58

SWG3-R3

•SWG3-R3J18

•SWG3-R3J19

•SWG3-R3J20

100100100

―――

―――

―――

1.821.821.82

SWG4-R1SWG4-R2SWG4-R3

Worm Wheels

J

G

B C D D’

E F

A

H4

( I )

J

A B C D D’

GE F

(H)

CS

CS H5

AG

Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash

(mm)

Weight

(kg)Catalog No.

F G （H） （ I ） J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm

1818181818

4343434343

―――――

―――――

5252 6767 67

59.558.7

126125129

48.846.9

104.3102103

38.035.182.477.677.1

30.928.468.462.862.4

27.024.559.955.153.8

24.722.254.549.748.7

20.918.546.942.240.6

0.16~0.290.16~0.290.16~0.290.16~0.290.16~0.29

0.750.751.461.461.46

AG3-20R1AG3-20R2AG3-30R1AG3-30R2AG3-30R3

18181818

43434343

(10)(11)(15)(15)

(103)(120)(130)(155)

8289.5 97

112

215274325455

179224270380

143171219308

120138185261

106121163233

96.4109150213

82.592.6

128183

0.16~0.290.16~0.290.16~0.290.16~0.29

2.032.443.224.52

AG3-40R1AG3-45R3AG3-50R1AG3-60R1

2020202020

5050505050

―――――

―――――

7171919191

115114244242250

93.690.0

200196198

72.767.2

158148147

58.253.5

129118117

51.146.4

114104102

45.741.2

10192.290.2

38.434.186.377.674.7

0.19~0.320.19~0.320.19~0.320.19~0.320.19~0.32

1.531.533.003.003.00

AG4-20R1AG4-20R2AG4-30R1AG4-30R2AG4-30R3

20202020

50505050

(15)(16)(16)(17)

(133)(153)(173)(210)

111121131151

417531630881

343430519730

274326418589

226259347491

200229309441

179202277395

152170236337

0.19~0.320.19~0.320.19~0.320.19~0.32

4.325.446.258.74

AG4-40R1AG4-45R3AG4-50R1AG4-60R1

NOTE 1. Allowable torques for worm rotation (rpm)

[Caution on J series]

① As available-on-request products, requires a lead-time for shipping within 3 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.

② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.

③ Keyways are made according to JIS B1301 standards, Js 9 tolerance.④ Areas of products which have been re-worked will not be black oxide coated.⑤ For products having a tapped hole, a set screw is included.

538

Sp

urG

ears

Hel

ical

Gea

rsIn

tern

alG

ears

Rac

ksC

P R

acks

& P

inio

nsM

iter

Gea

rsB

evel

Gea

rsS

crew

Gea

rsW

orm

Gea

r P

air

Bev

elG

earb

oxes

Oth

erP

rod

ucts

Ground WormsModule 5、6SWG

Worm WheelsModule 5、6

R

P QQ’

L M N O

G

W3

Catalog No.Reduction

ratioTransverse

moduleNo. of teeth

Number of start

Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width

AH7 B C D D' E

AG5-20R1AG5-20R2AG5-30R1AG5-30R2AG5-40R1

2010301540

m5

2020303040

12121

4°05'8°08'4°05'8°08'4°05'

RRRRR

H4H4H5H5H5

2222222222

75757575

110

100100150150200

110110160160210

115115165165215

3535353535

AG5-50R1AG5-60R1

5060

5060

11

4°05'4°05'

RR

H5H5

2222

120130

250300

260310

265315

3535

AG6-20R1AG6-20R2AG6-30R1AG6-30R2AG6-40R1

2010301540

m6

2020303040

12121

4°17'8°32'4°17'8°32'4°17'

RRRRR

H4H4H5H5H5

2525252525

8585

100100120

120120180180240

132132192192252

138138198198258

4040404040

AG6-50R1AG6-60R1

5060

5060

11

4°17'4°17'

RR

H5H5

2525

130150

300360

312372

318378

4040

Catalog No. Axialmodule

Number of start

Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)

LH7 M N O P Q Q'

SWG5-R1SWG5-R2

m512

4°05'8°08'

RR

W3W3

2525

5656

7070

8080

8585

3030

55

SWG6-R1SWG6-R2

m612

4°17'8°32'

RR

W3W3

3030

6363

8080

9292

100100

3535

55

[Caution on Product Characteristics] ① These worms produce axial thrust forces. See page 512 for more details.

[Caution on Product Characteristics] ① The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 510 for more details.

② There may be space in the casting between the two materials, but it will not affect the joint strength.

＊ H8, H9 shape have a hub made from FC200 cast iron.

AG

GE F

J

A B D’DC

H1

Specifications

Precision grade KHK W 002 grade 2Referencesection of gear Rotating plane

Gear teeth Standard full depth

Normalpressure angle 20°

Material CAC702 （formerly JIS AℓBC2)＊

Heat treatment ―Tooth hardness ―

Specifications

Precision grade KHK W 001 grade 2

Referencesection of gear Axial

Gear teeth Standard full depth

Normalpressure angle 20°

Material S45C

Heat treatment Teeth induction hardened

Tooth hardness 45～ 55HRC