Rigid Type（Feature：High Durability）

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Rigid Coupling Clamp Hub Type KBST

KBK

· Rigid shaft coupling for a stiff connection of two aligned shafts.
· High torques at a compact design
· Can be used for connecting multiple shafts in a line
· For shaft diameters from 6 - 50mm
· Easy, secure and fast assembly with radial clamping screws
· Keyways possible on request
· Available with a unique standard bore and also with different bore diameters
· Torque range from 30 - 2250Nm

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Min. Shipping Days ：	12 Days

Rigid Coupling split hub type KBST-G

KBK

· Rigid shaft coupling for a stiff connection of two aligned shafts.
· High torques at a compact design
· Can be used for connecting multiple shafts in a line - For shaft diameters from 5 - 50mm
· Easy, secure and fast assembly with radial clamping screws
· Split hub design allows assembly and disassembly of the coupling without moving the shafts
· Keyways possible on request
· Available with a unique standard bore and also with different bore diameters
· Torque range from 30 - 2250Nm

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Min. Shipping Days ：	11 Days

Rigid Coupling split hub type, stainless steel KBST-G-VA

KBK

· Rigid shaft coupling for a stiff connection of two aligned shafts.
· High torques at a compact design
· Can be used for connecting multiple shafts in a line
· For shaft diameters from 5 - 50mm
· Easy, secure and fast assembly with radial clamping screws
· Split hub design allows assembly and disassembly of the coupling without moving the shafts
· Keyways possible on request
· Available with a unique standard bore and also with different bore diameters
· Torque range from 25 - 1875Nm
· Stainless steel execution

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Min. Shipping Days ：	12 Days

Rigid Coupling Clamp Hub Type, stainless steel KBST-VA

KBK

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Min. Shipping Days ：	12 Days


Brand
Product Series
Starting from^∗
Min. Shipping Days
Application
Allowable Torque Range(N•m)
Shaft Bore Dia. (machined) D1(Ø)
Shaft Bore Dia. (machined) D2(Ø)
Outer Dia. A(Ø)
Overall Length W(mm)
Max. Rotational Speed Range(r/min)
Feature
Body Material
Allowable Torque(Nm)
Max. Rotational Speed(r/min)
Allowable Lateral Misalignment(mm)
Allowable Angular Misalignment(deg)
Buffer Part Material

	Select to compare	Select to compare	Select to compare	Select to compare
Brand	KBK	KBK	KBK	KBK
Product Series	Rigid Coupling Clamp Hub Type KBST	Rigid Coupling split hub type KBST-G	Rigid Coupling split hub type, stainless steel KBST-G-VA	Rigid Coupling Clamp Hub Type, stainless steel KBST-VA
Starting from^∗	-	-	-	-
Min. Shipping Days	12 Days	11 Days	12 Days	12 Days
Application	Standard / Servo Motor / Stepping Motor	Standard / Servo Motor / Stepping Motor	Standard / Servo Motor / Stepping Motor	Standard / Servo Motor / Stepping Motor
Allowable Torque Range(N•m)	-	-	-	-
Shaft Bore Dia. (machined) D1(Ø)	-	-	-	-
Shaft Bore Dia. (machined) D2(Ø)	-	-	-	-
Outer Dia. A(Ø)	18 ～ 85	18 ～ 85	18 ～ 85	18 ～ 85
Overall Length W(mm)	30 ～ 124	30 ～ 124	30 ～ 124	30 ～ 124
Max. Rotational Speed Range(r/min)	-	-	-	-
Feature	High Accuracy ～ No Backlash	High Accuracy ～ No Backlash	High Accuracy ～ No Backlash	High Accuracy ～ No Backlash
Body Material	Steel	Steel	Stainless Steel	Stainless Steel
Allowable Torque(Nm)	-	-	-	-
Max. Rotational Speed(r/min)	-	-	-	-
Allowable Lateral Misalignment(mm)	0	0	0	0
Allowable Angular Misalignment(deg)	0	0	0	0
Buffer Part Material	-	-	-	-

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Application
- Standard
- Servo Motor
- Stepping Motor
- Encoder
Clear

Allowable Torque Range(N•m)
0.05 to 1.00

1.01 to 3.00

3.01 to 5.00

5.01 to 10.00

10.01 to 20.00

20.01 to 50.00

50.01 to 100.00

100 to Less Than 500

1000 to Less Than 5000
Clear

Shaft Bore Dia. (machined) D1(Ø)
3

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

35

40

60
Drawing

Clear

Shaft Bore Dia. (machined) D2(Ø)
3

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

35

40

60
Drawing

Clear

Outer Dia. A(Ø)
13

15

16

18

18.5

19

20

21

24

24.6

25

26

28.5

29

30

32

32.5

34

35

38.5

39

40

42

43

45

50

51

53

56

60

63

65

67

77

82

85

108
Drawing

Clear

Overall Length W(mm)
16

20

21.5

21.9

22

22.5

23

24

25

25.5

26

27.4

30

31

32

35

36

39.5

40

41

43

44

45

47

48

50

51

52

53

54

55

57

65

66

71

75

83

95

108

124
Drawing

Clear

Max. Rotational Speed Range(r/min)
4,001 to 10,000

10,001 to 78,000

2001 to 4,000
Clear

Feature
Heat Resistant

High Accuracy

High Durability

High Torque

High Torsional Rigidity

Low Moment of Inertia

No Backlash

Small
Clear

Body Material
Aluminum

Stainless Steel

Steel

Steel, Aluminum
Clear

Allowable Torque(Nm)
0.3

0.5

0.6

0.7

1

1.2

1.4

1.8

2

2.3

2.5

2.8

3

4

4.5

4.7

5

5.5

6

7

7.8

8

8.8

9

9.8

10

11

11.8

15.7

19.6

20

25

35

37.3

40

41.2

49

54.9

60.8

68.6

75.5

88.2

103

123

157

177

206

400

470

1165

2370
Calculation of the allowable torque (or the Safety Factor, etc.) differs depending on the manufacturer. For details, see the technical data provided by the relevant manufacturer.
Clear

Max. Rotational Speed(r/min)
4000

4800

5000

5500

6000

6100

7000

7600

8000

9000

9500

10000

12000

14000

15000

16000

18000

19000

20000

24000

25000

26000

31000

33000

39000
Clear

Allowable Lateral Misalignment(mm)
0
Clear

Allowable Angular Misalignment(deg)
0
Clear

Buffer Part Material
- Polyacetal
- Aluminum
Clear

Brand

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