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Flexible Couplings - Bellows type, zero backlash, BKL series. (Part Numbers)

R+W

Features
Easy to mount
Light weight and low moment of inertia
High torsional stiffness

Design
Two clamping hubs concentrically mounted to flexible bellows. Brief overloads of up to 1.5x the rated torque are acceptable.

Material
Bellows: high grade stainless steel
Hubs: see table

Advantage
Smooth stable running in highly dynamic and highly precise motion applications

Part Number

Configured Part Number is shown.

Product Specifications
Part Numbers

: 30; 60; 90

Part Number
BKL/150/24/29
BKL/150/24/30
BKL/150/24/31
BKL/150/24/32
BKL/150/24/33
BKL/150/24/34
BKL/150/24/35
BKL/150/24/36
BKL/150/24/37
BKL/150/24/38
BKL/150/24/39
BKL/150/24/40
BKL/150/24/41
BKL/150/24/42
BKL/150/25/25
BKL/150/25/26
BKL/150/25/27
BKL/150/25/28
BKL/150/25/29
BKL/150/25/30
BKL/150/25/31
BKL/150/25/32
BKL/150/25/33
BKL/150/25/34
BKL/150/25/35
BKL/150/25/36
BKL/150/25/37
BKL/150/25/38
BKL/150/25/39
BKL/150/25/40
BKL/150/25/41
BKL/150/25/42
BKL/150/26/26
BKL/150/26/27
BKL/150/26/28
BKL/150/26/29
BKL/150/26/30
BKL/150/26/31
BKL/150/26/32
BKL/150/26/33
BKL/150/26/34
BKL/150/26/35
BKL/150/26/36
BKL/150/26/37
BKL/150/26/38
BKL/150/26/39
BKL/150/26/40
BKL/150/26/41
BKL/150/26/42
BKL/150/27/27
BKL/150/27/28
BKL/150/27/29
BKL/150/27/30
BKL/150/27/31
BKL/150/27/32
BKL/150/27/33
BKL/150/27/34
BKL/150/27/35
BKL/150/27/36
BKL/150/27/37
BKL/150/27/38
BKL/150/27/39
BKL/150/27/40
BKL/150/27/41
BKL/150/27/42
BKL/150/28/28
BKL/150/28/29
BKL/150/28/30
BKL/150/28/31
BKL/150/28/32
BKL/150/28/33
BKL/150/28/34
BKL/150/28/35
BKL/150/28/36
BKL/150/28/37
BKL/150/28/38
BKL/150/28/39
BKL/150/28/40
BKL/150/28/41
BKL/150/28/42
BKL/150/29/29
BKL/150/29/30
BKL/150/29/31
BKL/150/29/32
BKL/150/29/33
BKL/150/29/34
BKL/150/29/35
BKL/150/30/30
BKL/150/30/31
BKL/150/30/32

Minimum order quantity	Days to Ship	Allowable Torque Range (N•m)	For Shaft Size D1 (mm)	For Shaft Size D2 (mm)	Outer Dia. A (Ø)	Overall Length W (mm)	Feature	Allowable Torque (N•m)	Moment of Inertia (kg･m²)	Fit Length (mm) (mm)	Torsional Stiffness (N-m/rad) (N-m/rad)	Tightening Torque of the Fastening Screw (N-m) (N-m)	Size
1 Piece(s)	21 Days	100~less than 500	24	29	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	30	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	31	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	32	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	33	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	34	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	35	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	36	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	37	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	38	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	39	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	40	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	41	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	24	42	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	25	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	26	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	27	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	28	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	29	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	30	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	31	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	32	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	33	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	34	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	35	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	36	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	37	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	38	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	39	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	40	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	41	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	25	42	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	26	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	27	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	28	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	29	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	30	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	31	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	32	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	33	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	34	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	35	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	36	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	37	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	38	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	39	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	40	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	41	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	26	42	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	27	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	28	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	29	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	30	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	31	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	32	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	33	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	34	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	35	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	36	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	37	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	38	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	39	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	40	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	41	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	27	42	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	28	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	29	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	30	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	31	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	32	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	33	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	34	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	35	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	36	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	37	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	38	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	39	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	40	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	41	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	28	42	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	29	29	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	29	30	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	29	31	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	29	32	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	29	33	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	29	34	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	29	35	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	30	30	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	30	31	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150
1 Piece(s)	21 Days	100~less than 500	30	32	82	92	No Backlash / Low Moment of Inertia	150	0.94	32.5	141	85	150

Basic Information

Type	Bellows Type	Max. Rotational Speed Range(r/min)	4001~10000	Body Material	Aluminum
Max. Rotational Speed(r/min)	10000	Allowable Angular Misalignment(deg)	1	Allowable Lateral Misalignment Range(mm)	0.02~0.2
Allowable Lateral Misalignment(mm)	0.2	Operating Temperature Range(℃)	-12::212

Configure

2,728 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Allowable Torque Range(N•m)
10.01~20.00

20.01~50.00

50.01~100.00

100~less than 500
Clear
For Shaft Size D1(mm)
0-Pilot Bore

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62
Clear
For Shaft Size D2(mm)
0-Pilot Bore

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62
Clear
Outer Dia. A(Ø)
25

32

40

49

56

66

82

110

123
Clear
Overall Length W(mm)
30

40

44

58

68

79

92

109

114
Clear
Feature
No Backlash

Low Moment of Inertia

Unfinished Shaft Bore
Clear
Allowable Torque(N•m)
2

4.5

10

15

30

60

80

150

300

500
Clear
Fit Length (mm)(mm)
10.5

13

21.5

26

28

32.5

41

42.5
Clear
Torsional Stiffness (N-m/rad)(N-m/rad)
1.5

7

9

23

31

72

80

141

157

290
Clear
Tightening Torque of the Fastening Screw (N-m)(N-m)
2.3

4

4.5

8

15

40

70

85

120

200
Clear
Size
2

4.5

10

15

30

60

80

150

300

500
Clear
CAD
- 3D
Clear

Days to Ship

All

5 Days or Less

21 Days or Less

66 Days or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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Flexible Couplings - Bellows type, zero backlash, BKL series. (Part Numbers)

Basic Information

Configure

Specification/Dimensions

Allowable Torque Range(N•m)

For Shaft Size D1(mm)

For Shaft Size D2(mm)

Outer Dia. A(Ø)

Overall Length W(mm)

Feature

Allowable Torque(N•m)

Fit Length (mm)(mm)

Torsional Stiffness (N-m/rad)(N-m/rad)

Tightening Torque of the Fastening Screw (N-m)(N-m)

Size

CAD