87

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BoWex FLE-PA couplings are torsionally rigid curved-tooth flangecouplings, made from a combination of nylon and steel, for diesel engine drives in combination with hydraulicpumps.The FLE-PA mounting flange is madefrom glass fiber reinforced polyamidewith high mechanical stability and thermal strength.The coupling hub with external curved teeth is made from steel.The BoWex FLE-PA allows an extremely short installation space.Apart from that it is easy to assemblewithout any additional tools for alignment.

BoWex-ELASTIC is highly flexible, combining the benefits of the well-approved BoWex system with the suppleness of a highly flexible couplingin compact design. Torsional vibrationsand shock loads that may occur aredampened and reduced.The BoWex-ELASTIC consists of ahighly flexible, annular rubber elementfrom temperature-resistant natural caoutchouc, stressed for torque-to-bore ratio, and a BoWex coupling hubto be plugged in axially.

BoWex FLE-PA DBPBoWex-ELASTIC DBPFlange coupling for I. C.-engines

Bo

Wex

Bo

Wex

-FLE

-PA

Bo

Wex

ELA

ST

IC

BoWex Curved-tooth gear couplingsFlange coupling for I.C.-enginesTypes FLE-PA No. 016 and BoWex-ELASTIC No. 055

42/48 M 10 49 Nm

65 M 12 86 Nm

80 M 16 295 Nm

Advice for assembly:The flange can be fixed to the engine flywheel by means ofsocket head cap screws according to DIN 912 quality 8.8 or hexagon head screws quality 8.8.We recommend screws are loctited in position.

M 8 25 Nm

M 10 49 Nm

M 12 86 Nm

Screw tightening torque FLE-PAFlange to flywheel

Screw tightening torque for spline clamping hubsquality 12.9 DIN 912

High standards in quality and design are the basis for all KTR products. KTR couplings for I. C.-engines are subject to particularly strict criteria for the right balancingof vibrations in a drive system.

The selection of couplings in combination with I.C.-engines requires a certain basic knowledge and some experience. Thus, the selection of the wrong couplingmay cause torsional vibrations in the drive system whichwould result in an early failure of the coupling and otherdrive components. EDP calculation programs for thecoupling selection allow us to assure our customers of a safe and long-term operation of the couplings.

The team of KTR design engineers is available for our cu-stomers to solve special problems. Many users of KTR couplings all over the world benefit from this

know-how. Advice seeking to solve problems and support will characterize our efficiency in the future, too.

In the range of I. C.-engines we distinguish between two coupling systems which are necessary for an optimum and safe adaptation to the market conditions for drives:

The torsionally stiff BoWex FLE-PA flange coupling for the use in mobile hydraulics for a direct drive of hydraulic pumps.

The highly flexible BoWex-ELASTIC HE coupling for drives subject to dangerous torsional vibrations.

Applications for BoWex FLE-PA couplings

wheel loaders K 1,6

compact loaders K 1,6

hydraulic excavators K 1,4

mobile cranes K 1,6

graders K 1,5

vibration rollers K 1,4

fork lift trucks K 1,6

concrete mixer trucks K 1,3

concrete pumps K 1,4

asphalt finishers K 1,4

concrete cutters K 1,4

road mortisers K 1,4

For a selection according to the engine driving torque TAN a service factor K = 1,3 1,6 should beconsidered, depending on the load.

Applications for BoWex-ELASTIC couplings

screw compressors

generators

piston compressors

splitterboxes

suction pumps

high-pressure pumps

reversing gears

sifting gears

hydrodynamic converters

Coupling selection by means of torsional vibrationcalculation.

TKN TAN K

88

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89

For advanceddrive

technology

BoWex Curved-tooth gear couplingsFlange coupling for I. C.-enginesType FLE-PA - No. 016

Flange coupling for connection to I. C.-engines and hydraulic pumps

Applicable to all hydrostatic drives of construction machines, harvesting machines, etc.

High torsional stiffness operation free from resonance Maintenance-free due to material combination nylon

and steel Nylon flange with high mechanical resistance and

thermal strength (+ 130 C) Extremely short assembly Easy assembly by axial mounting Special mounting flanges available

Flange dimensionsaccording to SAE J 620 [mm]

61/2 215,9 200,02 6 9

71/2 241,3 222,25 8 9

8 263,52 244,47 6 11

10 314,32 295,27 8 11

111/2 352,42 333,37 8 11

14 466,72 438,15 8 14

Size D3 D2 z dL

Example of installation

BoWex FLE-PA for diesel engines with SAE connection; fixing of hub by means of end plateand screw

Max. axialdisplacement

[mm]

Speciallengthl1 max

Finish boreSize Pilot d

bore min. max.

42 20 42 65 100 42 33 42 20 13 40 bis 60

48 20 48 68 100 50 41 50 20 13 48 bis 60

T48 12 20 48 68 100 50 38 45 20 13 46

65 25 65 96 132 55 45 54 27 21 51 bis 70

T65 15 25 65 96 132 55 45 54 27 21 51

80 25 30 80 124 170 90 78 87 30 21 87

100 35 40 100 152 265 110 78 108 35 6 110

X X X X 2

X X X X 2

X X X X 1

X X X 2

X X X 1

X 2

X X 2

Dimension to SAE (D3)Dimensions [mm]

61/2 71/2 8 10 111/2 14D D1 l1 L3 L7 L8 L10 L11

mountingshort long

z =

num

ber

z =

num

ber

Technical data of BoWex FLE-PA Torques / Weight / Mass moments of inertia / Torsion spring stiffness

Dynamic torsion springstiffness with + 60 C = 0,4

[Nm/rad]

Torque TK Weight / Hub with FLE-PA flanges acc. to SAE[Nm] Mass

Size moment max.TKN TK max TKW of inertia J bore 61/2 71/2 8 10 111/2 14

0,30 TKN = 35 x 103

0,50 TKN = 75 x 103

0,75 TKN = 105 x 103

1,00 TKN = 125 x 103

0,30 TKN = 35 x 103

0,50 TKN = 75 x 103

0,75 TKN = 105 x 103

1,00 TKN = 125 x 103

0,30 TKN = 40 x 103

0,50 TKN = 86 x 103

0,75 TKN = 120 x 103

1,00 TKN = 143 x 103

0,30 TKN = 65 x 103

0,50 TKN = 145 x 103

0,75 TKN = 210 x 103

1,00 TKN = 255 x 103

0,30 TKN = 80 x 103

0,50 TKN = 180 x 103

0,75 TKN = 265 x 103

1,00 TKN = 320 x 103

0,30 TKN = 190 x 103

0,50 TKN = 410 x 103

0,75 TKN = 580 x 103

1,00 TKN = 700 x 103

0,30 TKN = 355 x 103

0,50 TKN = 750 x 103

0,75 TKN = 1030 x 103

1,00 TKN = 1240 x 103

[kg] 0,675 0,40 0,52 0,50 0,75 42 240 600 120

[kgm2] 0,0006 0,0025 0,0045 0,0048 0,0100

[kg] 0,790 0,40 0,52 0,50 0,75 48 240 600 120

[kgm2] 0,0007 0,0025 0,0045 0,0048 0,0100

[kg] 0,80 0,40 0,52 0,50 0,75 T 48 300 750 150

[kgm2] 0,0007 0,0025 0,0045 0,0048 0,0100

[kg] 2,300 0,80 0,93 1,15 65 650 1600 325

[kgm2] 0,0044 0,0100 0,0127 0,0230

[kg] 2,400 0,93 1,15 T 65 800 2000 400

[kgm2] 0,0044 0,0127 0,0230

[kg] 5,200 1,13 80 1200 3000 600

[kgm2] 0,0151 0,0225

[kg] 9,37 1,18 7,30100 2050 5150 1025

[kgm2] 0,0401 0,021 0,21

mounting

Bo

Wex

Bo

Wex

-FLE

-PA

Bo

Wex

ELA

ST

IC

90

For advanceddrive

technology

BoWex Curved-tooth gear couplingsFlange coupling for I. C.-enginesSelection according to SAE standard

Determination of coupling size

Connection dimension of coupling

Hub design/Mounting length

Table 1

Table 2

Table 3

Coupling-mounting short (l3)

Spline hub

Determination of mounting length l3 or l7SAE shaft l3 / l7 = G + LF LW + lS

DIN shaft l3 / l7 = G + LF lX

Clamping hub

Coupling-mounting long (l7)

SAE - pump mounting flange

Flange size according to SAE 617

Mounting flange of hydraulic pump

Table 4

Table 5

Selection of the coupling

If axial fixing of the hub by means of an end plate and a screw is not possible for a pump shaft with involute spline, we would recommend to use our clamping hub.

42/48 M 10 49 Nm

65 M 12 86 Nm

80/100 M 16 295 Nm

Screw tightening torque of spline clamping hubsquality 12.9 DIN 912

M 8 25 Nm

M 10 49 Nm

M 12 86 Nm

Screw tightening torque of FLE-PA flange to flywheel

Mounting instructions:

The flange can be fastened to the engine flywheel by means ofsocket head cap screws according to DIN 912 quality 8.8 or byhexagon head screw quality 8.8. We recommend screws areloctited in position.

z =

num

ber

z =

num

ber

of h

oles

z =

num

ber

z =

num

ber

of h

oles

hole

sho

les

hole

sho

les

91

For advanceddrive

technology

BoWex Curved-tooth gear couplingsFlange coupling for I. C.-enginesMounting dimensions according to SAE standard

1. Selection of coupling for diesel engineDiesel engine

powerkW HP

Coupling size

Flywheel toSAE

G

Pump mountingflange

LF

Drivingshaft ofpump

61/2 30,15 1,19

up to up to 42 a. 48 71/2 30,15 1,1930 kW 40 HP FLE-PA 8 62 2,44

10 54 2,12

up to up to 65 8 62 2,4490 kW 120 HP FLE-PA 10 54 2,12

weitere Gren auf Anfr. 111/2 39,6 1,56 Dim

ensi

ons

to S

AE

see

tab

les

3 an

d 4

See

tab

le 3

Hub

des

ign

SA

E J

498

/D

IN 5

480

9,5 0,375

9,5 0,375

12,7 0,5

X

2. Dimensions of coupling flange according to SAE J 620 [mm]

Size D3 D2 z = Number dL

61/2 215,9 200,02 6 9

71/2 241,3 222,25 8 9

8 263,52 244,47 6 11

10 314,32 295,27 8 11

X

4. Housing dimensions according to SAE 617 [mm]

SAE-Size A B C Z TH

SAE - 2 447,68 489 466,7 12 M 10 3/8

SAE - 3 409,58 451 428,6 12 M 10 3/8

SAE - 4 361,95 403 381,0 12 M 10 3/8

SAE - 5 314,33 356 333,4 8 M 10 3/8

X

5. Mounting flange for hydraulic pump to SAE [mm]

SAE 2-hole-flange SAE 4-hole-flange

A1 K-2 M Z A1 S-4 R ZX SAE-

Size

50,8 82,55 M8 5/16 2

82,55 106,4 M10 3/8 2 82,55 104,6 M10 3/8 4

101,60 146,0 M12 1/2 2 101,60 127 M12 1/2 4

127,00 181,0 M16 5/8 2 127,00 162 M12 1/2 4

152,40 228,6 M16 3/4 2 152,40 228,6 M16 5/8 4

AA

A

B

C

D

Selection of coupling hub Determination of mounting length l3 or l7

Mounting length of coupling l3 or l7

Flange Flange Flangesize size size

61/2 and 71/2 8 10

Mounting Mounting MountingK L K L K L

X

PumpBoWex shaft to

SAE J 498 Coupling and

size DIN 5480

l1 l2 lS l3 l7 l3 l7 l3 l7

Sp

line

hub

Cla

mp

ing

hub Dimensions of coupling hub

[mm]

Code to order coupling hub

Please mentioncoupling size

42

42

42

42

48

65

65

42

42

42

48

48

48

65

65

65

65

65

65

SAE-16/32 DP

pI 3/4z=11

SAE-16/32 DP

pB 7/8z=13, Kl.1

SAE-16/32 DP

pBs 7/8z=13, Kl.5

SAE-16/32 DP

pB-B 1z=15

SAE-16/32 DP

pA 13/8z=21

SAE-12/24 DP

pC 11/4z=14

25 x 1,25 x 18

DIN 5480

30 x 2 x 14

DIN 5480

35 x 2 x 16

DIN 5480

40 x 2 x 18

DIN 5480

45 x 2 x 21

DIN 5480

x 35 30 40

x 42 33 33 42

x 42 33 42

x 42 27 33 42

x 50 45 41 50 50 41 50

x 55 48 54 45 54

x 55 44 54 45 54

x 42 33 42

x 42 33 42

x 42 33 42

x 50 41 50

x 50 41 50 50 50

x 46 37 46

x 55 54

x 60 50 59 50 59

x 55 54

x 55 54 45 54

x 64 60 69 60 69

x 55 54 45 54

P 559101

P 660101

P 567101

P 660201

P 663301

P 663301

P 656201

P 000205

P 500202

P 500203

P 000206

P 500203

P 000303

P 000303

P 500301

P 000304

P 500302

P 000403

P 500401

Orderform: FLE-PA coupling SAE pump mounting flange

Coupling size SAE connection Code of coupling Pump mounting flange Pump mounting toof coupling hub for engine housing SAE 2 holes / 4 holes

standard - metricfastening thread

Table 1 Table 2 Table 3 Table 4 Table 5

Please photocopydimension sheetand highlight alldetails required for design.

BoWex 48 FLE-PA 71/2 P 663301 SAE 4 B - 2 L

Ple

ase

men

tion

typ

e

Bo

Wex

Bo

Wex

-FLE

-PA

Bo

Wex

ELA

ST

IC

92

For advanceddrive

technology

BoWex Curved-tooth gear couplingsSpecial flange programme, deviations from the SAE standard

Other connection flanges on request

Fitting toDeutz 2011dieselengines

BoWex 48 FLE-PA, 125F2L511 kit 1338

BoWex 48 FLE-PA, 215,9F2-4L 2011

BoWex 48 FLE-PA, 263,52F2-4L 2011

BoWex T 48 FLE-PA, 263,52BF 4L 2011

Coupling sizeEngine type

Fitting toMitsubishidieselengines

BoWex 48 FLE-PA, 208K3B 31 DS

BoWex 48 FLE-PA, 338 / 20S4E / 4GS2

BoWex 48 FLE-PA, 338 / 404D Q 50

BoWex 48 FLE-PA, 130K2B/C-K 3B/D/E-KE 75-K 4C/D/E

Coupling sizeEngine type

Fitting toHatzdieselengines

BoWex 48 FLE-PA, 1652L30/40H - 2M40 - 3L30/40/H

BoWex 48 FLE-PA, 152/2E573/673/71/75/79 - E780/786/HE780

BoWex 48 FLE-PA, 96Z 788/789/790

BoWex M 422 G 30

Coupling sizeEngine type

32

0 z

=8

disp

lace

d by

4x3

0

Keyway width6JS9

93

For advanceddrive

technology

BoWex Curved-tooth gear couplingsSpecial flange programme, deviations from the SAE standard

Other connection flanges on request

Fitting toVWIndustrial dieselengines

BoWex 48 FLE-PA, 220/1122/126 A

BoWex 48 FLE-PA, 252026.2 / 068.5 / 6 / A/D

BoWex 48 FLE-PA, 272028.B / M 344

BoWex 65 FLE-PA, 268 Z075.1 / 075.2

Coupling sizeEngine type

Fitting toPerkinsLombardinidieselengines

BoWex 48 FLE-PA, 152/1Perkins 4.108

BoWex 48 FLE-PA, 152/3504-2T / 2LR (BA 505 * DO2)

BoWex 48 FLE-PA, 118FOCS-Serie

BoWex 48 FLE-PA, 140LDW 1303/1503/2004

Coupling sizeEngine type

Fitting toKubotadieselengines

BoWex 48 FLE-PA, 150Super mini series

BoWex 48 FLE-PA, 188Super 3 series

BoWex 48 FLE-PA, 135Super 5 series

Coupling sizeEngine type

cente

ring

is ef

fect

ed b

y 3

cent

er p

ins

cente

ring

is ef

fect

ed b

y 3

cent

er p

ins

cente

ring

is ef

fect

ed b

y 3

cent

er p

ins

Bo

Wex

Bo

Wex

-FLE

-PA

Bo

Wex

ELA

ST

IC

94

For advanceddrive

technology

BoWex - ELASTICHighly flexible flange couplingsType No. 055

Flange coupling with flanges according to SAE and specialdimensions for mounting to I. C.-engines

Easy assembly by axial plug-in without additional bolting

Compensation of misalignment on driving and driven side

Use of coupling hubs from the BoWex standard program-me

Finish bore according to ISO fit H7, keyway to DIN 6885,sheet 1 (JS9) - inch bores, taper bores, spline clampinghub

Available in the hardness 40, 50 and 65 Shore A

Special dimensions and lengthened hubs on request

Flange dimensions according to SAE J 620

[mm]

Size DA D3 z d1

Orderform: BoWex-ELASTIC 42

Coupling size

HE 1

Design

40

Elastomerhardness

8

Flange diameterDA acc. to SAE

or special

70

Mountinglength

LHE

U

Unbored or with

finish bore

61/2 215,9 200,02 6 9

71/2 241,3 222,25 8 9

8 263,52 244,47 6 11

10 314,32 295,27 8 11

111/2 352,42 333,37 8 11

14 466,72 438,15 8 14

16 517,5 489,0 8 14

18 571,5 542,9 6 18

Components

Design HE1

DesignHE2

3 1 2 3 1 22

z =

num

ber

z =

num

ber

z =

num

ber

z =

num

ber

Weightwith pilot

boredcoupling

Tip circleof hub

BoWex- Bore dELASTIC [mm]

Pilot Maxi-Size bored mum

Mass momentof inertia

JA JL

[kgm2] [kgm2]

Dimension [mm]Flange connection to SAE J 620

D1 D2 Z1xM l3 l2 D4 D5 D l1 LHE1 LHE261/271/2 8 10 111/2 14 16 18

W 42 HE 42

42 HE

48 HE 48

65 HE 65

80 HE 25 80

G 80 HE 25 80

100 HE 35 100

125 HE 45 125

X

X

X

X X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

142 162 6 M6 4 45 146 180 65 78 42 70 50

160 180 8 M6 4 45 164 198 68 78 50 78 50

198 224 8 M8 5 55 204 244 96 110 55 85 62

314,32 126 74

265 295,3 8 M10 6 70 266 316 124 145 90 132 80

265 295,3 8 M10 6

352,4 136 84

300 333,4 8 M10 680 302

356124 145 90

142 90

4 80 350 412 152 176 110 150 82

186 103

438,1 16 M12 6 98 416 466,7 192 225 140 192 109

438,1 16 M12 6 192 109

1,90 0,0067 0,0016

2,20 0,0105 0,0016

2,45 0,0149 0,0016

2,25 0,011 0,0021

2,55 0,015 0,0021

3,25 0,031 0,0021

5,30 0,037 0,0084

6,10 0,059 0,0084

9,00 0,181 0,0084

7,93 0,0204 0,03

9,90 0,068 0,03

13,65 0,210 0,03

9,7 0,042 0,046

14,5 0,220 0,046

14,70 0,20 0,04

16,0 0,28 0,04

33,0 0,274 0,292

34,1 0,387 0,292

37,0 0,846 0,292

l1

95

For advanceddrive

technology

BoWex - ELASTICHighly flexible flange couplingsType HEW No. 065

Highly flexible shaft coupling for the use on piston machines, electric motors, etc.

Easy assembly by axial plug-in - particularly suitable for blind assembly in closed connection housings

High compensation of misalignment on driving and driven side with only low restoring forces

Mounting flanges available for the use on diesel engineV-belt side (steering side)

Elastomer parts available in the hardness 40, 50 and 65 Shore A for adaptation of torsional vibration of the drive system

Components

Design HEW1 Design HEW 2

L1

Weight

[kg]

Coupling

Size

Mass moment of inertia

JA JL[kgm2] [kgm2]

D D2 z x M D3 D4 DA l1 l2 l3 l4 l5 l7 E E1 LHEW1 LHEW2

68 162 6 M6 85 146 180 50 45 50 15 42 50

68 180 8 M6 92 164 200 50 45 55 17 45 50

96 224 8 M8 125 204 245 70 55 75 28 63 70

124 295,27 8 M10 130 266 318 90 70 80 17 70 75

124 333,4 8 M10 145 302 358 90 80 90 22 78 90

4 32 132 104

4 32 137 109

5 42 187 150

5 45 215 160

5 55 235 185

42 HEW 48 50

48 HEW 48 55

65 HEW 65 75

80 HEW 80 80

G 80 HEW 85 95

0,0016 0,0118 4,20

0,0021 0,0200 5,50

0,0084 0,0690 12,70

0,0300 0,2160 23,30

0,0460 0,2720 26,40

Orderform:

Other types:BoWex-ELASTIC 48 HE for mounting to diesel engine V-belt side

BoWex-ELASTICtype HEG for connection of cardan shaft

Perkinsdiesel engines

KHDdiesel engines

BoWex-ELASTIC 48

Coupling size

HEW

Design

50

Elastomerhardness

d1 = 40

Finish bore of hub

d2 = 50

Finish bore of flange

Space for change

of V-belt

Space for change

of V-belt

z =

num

ber

z =

num

ber

Bore

d1 d2max. max.

L1

Bo

Wex

Bo

Wex

-FLE

-PA

Bo

Wex

ELA

ST

IC

96

For advanceddrive

technology

BoWex - ELASTICHighly flexible couplingsTechnical data

Displacements

For other operating speeds or higheroperating temperatures the permissible radial displacement is calculated as follows:

1500Kr perm. = Kr St nX

Radial displacement Kr Angular displacement Kw Axial displacement Ka

Assembly of elastomer / flange W 42/42 48 65 80 G 80 100/125HE countersunk screw with hexagon socket DIN 7991 6 x 8 x 8 x 8 x 8 x 16 xHEW capscrew with hexagon socket DIN 912 M6x16-10.9 M6x16-10.9 M8x20-10.9 M10x25-10.9 M10x25-10.9 M12-25Hexagon nut DIN 934 / yellow chromated M6-10 M6-10 M8-10 M10-10 M10-10 M12-10Tightening torque 14 Nm 14 Nm 35 Nm 69 Nm 69 Nm 86 Nm

We recommend screws are loctited in position. Note: Please only use nuts and screws without grease. Do not use loctite on the rubber surfaces.

Shore A

TKN [Nm]

TK max [Nm]

TKW [Nm]

PKW [W]

nmax [min-1]

TKN []

Cdyn [Nm/rad]

VR

Cr [N/mm]

Kr [mm]

Kr max [mm]

Kw []

Kw max []

Ka [mm]

Elastomer hardness [Shore A]

Rated torque

Maximum torque

Vibratory torque with 10 Hz

Permissible damping power

Max. perm. operating speed

Twisting angle with rated torque

Dynamic torsion spring stiffness

Relative damping

Resonance 2 factor VR

Radial spring stiffness

Perm. rad. couplingmisalignment with n = 1500 min-1

Max. perm. rad. coupl. misaligment for short-term startPerm. angularcoupl. misalign- ment with n = Max. perm. angularcoupl. misalignmentfor short-term start

Perm. axial couplingmisalignment

1500min-1

3000min-1

60C80C

W 42 42 HE 48 HE 65 HE 80 HE G 80 HE 100 HE 125 HEHE

40 Sh 40Sh 50Sh 65Sh 40Sh 50Sh 65Sh 40Sh 50Sh 65Sh 40Sh 50Sh 65Sh 40Sh 50Sh 65Sh 40Sh 50Sh 65Sh 40Sh 50Sh 70Sh

90 130 150 180 200 230 280 350 400 500 750 950 1200 1250 1600 2000 2000 2500 3200 3000 4000 5000

270 390 450 540 600 690 840 1050 1200 1500 2250 2850 3600 3750 4800 6000 6000 7500 9600 9000 12000 15000

27 36 45 54 60 69 84 105 120 150 225 285 360 375 480 600 600 750 960 900 1200 1500

15 20 27 45 90 135 160 1805 6,5 9 15 30 45 53 60

6200 6200 5600 4500 3600 3000 2700 2300

17 16 13 8 16 13 8 16 13 8 14 13 6 12 10 6 12 10 6 12 10 6

365 550 850 2700 850 1300 3500 1600 2200 6000 4500 6500 18000 7500 12000 32000 12000 19000 48000 19000 30000 75000

0,6 0,6 0,8 1,2 0,6 0,8 1,2 0,6 0,8 1,2 0,6 0,8 1,2 0,6 0,8 1,2 0,6 0,8 1,2 0,6 0,8 1,2

10,5 10,5 7,9 5,2 10,5 7,9 5,2 10,5 7,9 5,2 10,5 7,9 5,2 10,5 7,9 5,2 10,5 7,9 5,2 10,5 7,9 5,2

105 142 219 697 176 269 724 209 288 784 351 507 1404 476 762 2031 366 570 1200 617 974 2434

1,0 1,1 1,0 0,5 1,2 1,1 0,5 1,6 1,5 0,7 1,8 1,7 0,8 2,0 1,9 0,9 2,2 2,0 1,0 2,5 2,3 1,1

3,2 3,6 3,3 1,5 3,8 3,5 1,7 5,1 4,7 2,2 5,7 5,3 2,4 6,0 5,7 2,7 6,5 6,0 3 7,5 6,9 3,3

1,0 1,0 0,75 0,5 1,0 0,75 0,5 1,0 0,75 0,5 1,0 0,75 0,5 1,0 0,75 0,5 1,0 0,75 0,50 1,0 0,75 0,50,5 0,5 0,4 0,25 0,5 0,4 0,25 0,5 0,4 0,25 0,5 0,4 0,25 0,5 0,4 0,25 0,5 0,40 0,25 0,5 0,4 0,25

1,5 1,5 1,5 1,5 1,5 1,5 1,5 1,5

2 2 2 2 2 3 3 3

The technical data mentioned apply for an ambient temperature of T = 60 C

Coupling sizes

Technical data for coupling selection / Torsional vibration calculation

Driving side

diesel gas engine type

straight-type engine V-engine/angle degrees stroke mm

2-cycles 4-cycles piston mm No. of cylinders

nominal torque TAN Nm speed range n: idle speed 1/min.

peak torque TAS Nm nmin. operational nmax. operational 1/min.

mass moment of inertia JA or flywheel effect GDA2 for

flywheel JA kgm2 or GD2A kpm2

driving gear JA kgm2 or GD2A kpm2

Driven side

hydraulic pump splitterbox generator screw compressor

piston compressor No. of cylinders order of cylinders

manufacturer/type

nominal torque TLN Nm peak torque Nm

mass moment of inertia JL kgm2 or flywheel effect GD2L kpm2

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BoWex - ELASTICHighly flexible couplingsCoupling selection

1. BoWex-ELASTIC couplings should be selected in accordance with DIN 740 part 2. The coupling must be sufficiently sized to ensure that themaximum permissible coupling load is not exceeded in any operating condition. It is therefore necessary to compare the actual loads with thepermissible rated parameters of the coupling according to tables 1.1 - 1.4 listed below.

For drives subject to dangerous torsional vibrations it is necessary for a safe operation to review the drive by means of a torsional vibration calculation.

Technical data for coupling selection / Torsional vibration calculation

Driving side

diesel gas engine type

straight-type engine V-engine/angle degrees stroke mm

2-cycles 4-cycles piston mm No. of cylinders

nominal torque TAN Nm speed range n: idle speed 1/min.

peak torque TAS Nm nmin. operational nmax. operational 1/min.

mass moment of inertia JA or flywheel effect GDA2 for

flywheel JA kgm2 or GD2A kpm2

driving gear JA kgm2 or GD2A kpm2

Driven side

hydraulic pump splitterbox generator screw compressor

piston compressor No. of cylinders order of cylinders

manufacturer/type

nominal torque TLN Nm peak torque Nm

mass moment of inertia JL kgm2 or flywheel effect GD2L kpm2

tangential force diagram

1.1 Load by rated torqueThe permissible rated torqueTKN of the coupling must, at all operating temperatu-res, be at least as high asthe rated torque TN of themachine.

1.2 Load by torque shocksThe maximum permissibletorque of the coupling must,at all operating tempera-tures, be as high as the operational peak torque TS, taking into a ccount the shock frequency Z.

1.3 Passing through resonance rangeThe peak torque TS arising when theresonance range is passed throughmust not exceed the maximum torque Tkmax of the coupling, takinginto account the temperature.

1.4 Load by vibratory torque shocksThe permissible vibratory torque TKWof the coupling, at the operatingspeed and ambient temperature,must not be exceeded by the biggestperiodical vibratory torque TW.With operating frequencies f > 10 Hzthe heat produced by damping in theelastomer is considered as dampingpower PW.

TKN TN St TK max TS SZ St

TKW TW St

PKW PW

TK max TS Sz St

Shock on driving sideTS = TAS MA SAShock on driven sideTS = TLS ML SL

40C+ 70C + 80C

+ 60C

St 1,0 1,2 1,6

PAN/LN [kW]TN [Nm] = 9550

n [1/min]

JL JAMA = ML =

JA + JL JA + JL

With knowledge of mass distribution, direction and type of shock it is possible to calculate the peak torque TS. If the moments of inertia are unknown, MA or ML = 1.

The permissible damping power PKW of the coupling depends onthe ambient temperature and must not be exceeded by the actualdamping power produced.

Temperature factor St Starting factor SZ Shock factor SA/SL

Starting > 10 > 60< 10 > 120

frequency/h < 60 < 120

onSZ 1,0 1,5 2,0

request

moderate shocks 1,5

average shocks SA/SL 1,8

heavy shocks 2,5

table No. 1 table No. 2 table No. 3

Bo

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MONOLASTICSingle-part, flexible flange couplings for I. C.-engines

MONOLASTIC - for the drive of diesel engine/hydraulic pump up to 30 kW

Single-part design with flange fastening by three bolts(sizes 28 and 32)

Flange connection according to SAE 61/2" to 10" (size 50)

Easy assembly of coupling

Axial plug-in in combination with the pump shaft

Compensation of high radial and angular displacements

Available for pump shafts according to SAE and DIN

Size Torque [Nm]

dimensions [mm]Elastomerhardness(Shore A)

d D D1 D2 z dL D3 L1 L2 L3 L4 L5TKN TKmax TKW

28

32

50

50

65

70

50

65

50

65

Size 28 and 32 Size 50

50 100 25

70 175 35 25 42 115 100 3 10 124 40 2 32 39 38

100 300 50

100 200 5032 50 140 125 3 12 150 42 2 42 43 38

160 400 80

260 520 13032 50 167 42 2 24 30 38

300 750 150

Size Cdyn[Nm/rad]

Permissible damping power

with 60 CPKW [W]

Permissible radialdisplacement

with 2200 min-1KR [mm]

Permissible angulardisplacement

with 2200 min-1KW [mm]

Radialspring stiffness

Cr[N/mm]

Max. permissibleoperating speed

nmax[min-1]

Technical data

28

32

50

50 450

65 800

70 1200

50 750

65 1600

50 3500

65 10000

0,80

0,60

0,50

0,80

0,60

0,80

0,60

150

300

400

200

400

650

1300

15

25

35

1

1

1

6000

6000

6000

Elastomerhardness[Shore A]

SAE connection61/2, 71/2, 8, 10

z =

num

ber

z =

num

ber

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BoWex Curved-tooth gear couplingsFlange couplings for I.C.-enginesAdditional Information

Use ofPC with specialsoftware for couplingselection

Use of CADand FEM systems for developmentand construction

R & D centerTest benches

Application:3-cylinder diesel engine - screw compressor

Use:BoWex-ELASTIC 42 HE - 50 Shore A

Calculation:Acceleration from 300 min-1to 2700 min-1

KTR makes use of special simulation calculation programs for the coupling selection and the torsional vibration determination of the drive system.This ensures a resonance-free operation of the machine, along with a safe,long-lasting operation of thedrive components. This is part of the usual KTR standard service.

Apart from new products the team of KTR design engineers develops specific drive solutions for customerswhich are adapted to yourapplication in detail.

For that purpose we makeuse of latest 3D-CAD andFEM equipment, ensuring an optimum and quick service.

KTR has test benches in itsresearch and developmentcenter with servo-hydraulicand electronic control anddata processing by PC. A special software which wasdevelopped for KTR ensuresa short-term and detailedevaluation.

In total ten static and dyna-mic test benches of differentperformance are installed in the R & D center.

These test benches are usedto test performance, capacityof resistance to wear, etc. of KTR drive elements.

Apart from that serial testsare performed to ensure a constant quality standard of KTR products.

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