-7471 -7481

Precision Ball Screws Standard Nut - Shaft Dia. 20; Lead 5, 10, 20Accuracy Grade C5

NutType Type Accuracy

GradeShaft Dia. Lead

Screw Shaft NutMMaterial HHardness MMaterial HHardness

Standard Nut C-BSS C5 20 5, 10, 20 S55C Induction Hardened58~62HRC SCM415 Carburized

58~62HRC

Nut Type Accuracy Grade

Part Number 1mm Increment Y Ball Dia. Ball Center Dia.

Screw Root Dia.

Number of Circuits

Basic Load Rating Axial Play

Preload Torque N • cm

Twisting DirectionType Screw Shaft O.D. Lead L C (Dynamic) kN Co (Static) kN

Standard Nut C5 C-BSS 20

05 200~1000 L-92

3.175

21.08 (17.905) 3.8 turns, 1 row

7.1 14.5

0.015 or Less

3.0 or Less

Right10250~1500 L-95 20.75 (17.575)

9.5 17.64.0 or Less

20 1.8 turns, 1 row 6.4 11.3

kgf=Nx0.101972

-0.

009

Ø36-

0.02

5

-0.

004

Ø15 -

0.01

2

0

Ø12 -

0.01

1

0

Ø1

4.3 -

0.11

0 17-0.25

+0.110.15

+0.141.15

Arrow View X-X

Ø47

Ø20

Ø20 -0.

003

Ø15-

0.01

1

104757

58

44

45°22.5°

12 Y (Nut Motion Range) 63 2015

85

10

C0.5C0.5C0.5C0.5

C0.5

R0.3

or l

essR0.3 or less

M15x1.0

M6x1.0 (Oil Inlet)

6-Ø6.6 Through

X

X

L

0

0

C-BSS2020

1050

6058

44

45°22.5°

Ø47Ø20

Ø20

12 Y (Nut Motion Range) 63 20

15

85

10

C0.5C0.5C0.5C0.5

C0.5

R0.3

or l

essR0.3 or less

M15x1.0

M6x1.0 (Oil Inlet)

6-Ø6.6 Through

0

Ø1

4.3 -

0.11

-0.

009

Ø36 -

0.02

5

-0.

003

Ø15-

0.01

1

0

Ø1

2-0.

011

+0.141.15 0

+0.110.15

Arrow View X-X

X -0.

004

Ø15 -

0.01

2

0 17-0.25

X

L

0

C-BSS2010

103040

58

44

45°

Ø47

22.5°

12 Y (Nut Motion Range) 60 205 5 10

Ø 20

15

Ø20

C0.5

M15x1.0

M6x1.0 (Oil Inlet)

6-Ø6.6 Through

R0.3 or less

-0.

004

Ø15 -

0.01

2

0

Ø1

4.3 -

0.11

R0.3

or l

ess

C0.5C0.5

C0.5

C0.5 -

0.00

3Ø1

5-0.

011

0 17-0.25

-0.

009

Ø36 -

0.02

5

+0.141.15 0

+0.110.15

0

Ø1

2-0.

011

X

X

L

0

Arrow View X-X

C-BSS2005

Points of comparisonbetween similar products

C-VALUE parts' load rating, axial clearance and nut dimensions are different from similar parts. (For details, see P.677~ P.679)When considering C-VALUE parts, choose by comparing the specifications against similar parts.

Part Number - L - (FC, KC•••etc.)

C-BSS2010 - 365 - KC10

Alterations Code Spec.No Machining on Support Side Shaft End

NCNo machining added on the support side shaft end.

Ordering Code NC

Ball Nut Orientation Reversed

RLCChanges the nut direction.Ordering Code RLC

No Retaining Ring Grooveon Support Side Shaft End

RNC

Retaining ring groove is not machined on the support side shaft end.

Ordering Code RNCECombination with FC is not available.

Change Support Side Shaft End Length

FC

Changes the length of the support side shaft end.FC=1mm IncrementOrdering Code FC20E13≤FC≤30EY dimension is shortened.

Change Support Side Shaft End Machining

GC

Changes the machining on the support side.Q is selectable from 10, 12, 15.G=1mm Increment EY dimension is shortened.Ordering Code GC-Q10-G20E5≤G≤Qx3

Alterations Code Spec.Tapped Hole on Support Side Shaft End

MC

Adds a tapped hole on the support side shaft end.MC=1mm IncrementOrdering Code MC25

M lM6x1.0 15

E21≤MC≤30

Keyway on Fixed Side Shaft EndDetailed Keyway Dimensions DP.684

KC

Adds a keyway on the fixed side shaft end.KC=1mm IncrementOrdering Code KC15E4≤KC≤19

Keyway on Fixed Side Shaft End

KLC

Adds a keyway at a customer specified area on the fixed side shaft end. (Keyway dim. is same as KC.)K, S=1mm IncrementOrdering Code KLC-K7-S2E5≤K+S≤19

Flat Machined on Fixed Side Shaft End

SC

Adds a flat on the fixed side shaft end.SC=1mm IncrementOrdering Code SC7E5≤SC≤19

2 Flats Machined on Fixed Side Shaft End

SWCSGC

Adds two flats on the fixed side shaft end.SWC: 90° Position SGC: 120° Position1mm IncrementOrdering Code SWC20E5≤SWC, SGC≤19

E�Y dimension is shortened.

SWC SGC

0.5

SWC, SGC 0.5 0.5

0.5

Qh7

G

L

(Fixed Side)(Support Side)

Revised

Std.

FC

10.15

MC

10.15l

M

KC

SK

0.5SC

Part Number - L

C-BSS2005 - 820

Nut Type Accuracy Grade Part Number

Unit Price 1 ~ 4 pc(s).L200~400 L401~600 L601~800 L801~1000 L1001~1200 L1201~1500

StandardNut C5

C-BSS2005 - -C-BSS2010C-BSS2020

Similar parts listed pageDP.745, 746

<Do not take a nut off><Do not let a nut overrun>QNotesEFilled with lithium soap based grease (Alvania Grease S2 made by Showa Shell Sekiyu K.K).EFor accuracy of Ball Screws, see P.2223 and P.2224.EFor details of Support Units, see P.753 ~ P.778.ECautions: Do not let the nuts overrun or remove the nuts from the screw shafts.

It may cause the balls to fall out or damage the ball recirculation parts.EDo not tilt the ball screw assembly since the nut may spin off from the shaft due to its own weight.EUse one of the support unit accessory collars on the fastening nut side.

QCombination with Support Units

EOther than the part numbers shown above, a wide variety of Support Units are also available. (P.761~P.778)

Ball Screw Part Number Recommended Support Unit

Type Screw Shaft O.D. Lead Part Number Shape Fixed

SideSupport

Side PageType No.

C-BSS 20051020

C-BRW

15Round g P.767

C-BUR g P.768C-BSW

Square g P.763C-BUN g P.762

Support Units Support Side

Support Units Fixed Side

QPeripherals: Combination of the following parts is available.

Support Units (Square) Support Units (Round)

Note that, for some of the types shown here, order might be unable to be received by the MISUMI Indonesia offices.