Bellow couplings / hub clamping / bellows: stainless steel / body: aluminium, steel / KB4 / KBK

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· Backlash-free metal bellows coupling with clamp hubs
· Hub material: up to 60Nm – aluminum, up from 80Nm - steel
· For shaft diameters from 10 - 80mm
· High torsional stiffness, compensation of shaft misalignment at low restoring forces
· Easy to assemble
· Perfect bellows coupling for connecting servo motors, e.g. in machine tools, automation techniques, packing machines, wood working machines
· Torque range: 18 - 1400Nm

Part Number

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Product specification
Part Numbers
Catalog

Metal Bellows Coupling with Collet Clamps, KB4 | 18 ~ 1400

Product Information

Material

bellows - stainless steel
hub -size 18 - 60: aluminium
hub - from size 80: steel

Hub

bore tolerance: H7

Temperature Range

-30 °C ~ 120 °C
size 800/1400: -30 °C ~ 250 °C

Keyway

optional acc. DIN 6885
biggest bore marked with a #

Drawing

Order Code


Order Code	KB4 / 60	-	89	-	12	-	32	-	(S)
	Type / size		Length L		ØD1 (H7)		ØD2 (H7)		Options

Specification Table

Size	Torque TKN (Nm)	Dimensions (mm)								Technical Data
		L	Ø A	D1/D2	H	C	E	B	F	Mass (kg)	Moment of Inertia J (g m²)	Spring Stiffness			Misalignment			max speed min^-1
		Length	Outer Ø	Bore Sizes (H7) min~max					Screw (ISO4762) TA (Nm)			torsional CT 10³ (Nm/rad)	radial CR (N/mm)	axial CA (N/mm)	radial ΔKr (mm)	axial Δka (mm)	angular ΔKw (°)
18	18	63	45	10-25.4	17	5.5	19.5	47.4	M5	0.1	0.04	20	205	50	0.2	0.5	1.5	12800
		71							8	0.15	0.05	15	82	36	0.25	0.5	2	12800
30	30	65	56	10-32	20	7.5	24.5	56.4	M6	0.3	0.15	38	720	50	0.15	0.6	1.5	10300
		73		30#					15	0.32	0.16	28	225	28	0.25	1	2	10300
60	60	79	66	12-35	23	10	29	66	M8	0.5	0.33	75	1150	90	0.15	0.6	1.5	8700
		89							40	0.6	0.36	50	340	50	0.25	1	2	8700
80	80	91	82	14-44	28	11	33.5	82.9	M10	2.3	2.3	128	1200	80	0.2	0.5	1.5	6900
		102							84	2.4	2.4	75	400	50	0.25	0.8	2	6900
150	150	91	82	19-44	28	11	33.5	82.9	M10	2.3	2.5	155	2020	145	0.2	0.5	1.5	6900
		102							84	2.4	2.6	105	595	85	0.25	0,8	2	6900
200	200	101	90	22-47	31	13	38	90.8	M12	2.6	3.3	175	2500	145	0.2	0.5	1.5	6400
		113							125	2.7	3.5	120	460	82	0.25	0.8	2	6400
300	300	105	110	30-60	40	13	38	110	M12	4.3	7.6	502	6300	280	0.2	0.5	1.5	6000
		116							145	4.4	7.8	285	1400	145	0.25	0.8	2	6000
500	500	112	122	35-70	42	15	42	122	M12	5.5	13.5	690	7790	100	0.2	0.5	1.5	5000
		123							145	5.6	13.7	320	970	85	0.25	1	2	5000
800	800	168	157	40-80	55	22.5	55	170.3	2xM20	14.3	56.9	1270	700	275	0.2	0.8	1.8	5000
									400
1400	1400	168	157	50-80	55	22.5	55	170.3	2xM20	14.8	57.7	1270	700	275	0.2	0.8	1.8	5000
									470

Data to be displayed: 30; 45; 60

Part Number
KB4/18-63-[10-25.4/0.1]-[10-25.4/0.1]
KB4/18-63-[10-25.4/0.1]-N[10-25.4/0.1]
KB4/18-63-N[10-25.4/0.1]-[10-25.4/0.1]
KB4/18-63-N[10-25.4/0.1]-N[10-25.4/0.1]
KB4/18-71-[10-25.4/0.1]-[10-25.4/0.1]
KB4/18-71-[10-25.4/0.1]-N[10-25.4/0.1]
KB4/18-71-N[10-25.4/0.1]-[10-25.4/0.1]
KB4/18-71-N[10-25.4/0.1]-N[10-25.4/0.1]
KB4/30-65-[10-32/1]-[10-32/1]
KB4/30-65-[10-32/1]-N[10-32/1]
KB4/30-65-N[10-32/1]-[10-32/1]
KB4/30-65-N[10-32/1]-N[10-32/1]
KB4/30-73-[10-32/1]-[10-32/1]
KB4/30-73-[10-32/1]-N[10-32/1]
KB4/30-73-N[10-32/1]-[10-32/1]
KB4/30-73-N[10-32/1]-N[10-32/1]
KB4/60-79-[12-35/1]-[12-35/1]
KB4/60-79-[12-35/1]-N[12-35/1]
KB4/60-79-N[12-35/1]-[12-35/1]
KB4/60-79-N[12-35/1]-N[12-35/1]
KB4/60-89-[12-35/1]-[12-35/1]
KB4/60-89-[12-35/1]-N[12-35/1]
KB4/60-89-N[12-35/1]-[12-35/1]
KB4/60-89-N[12-35/1]-N[12-35/1]
KB4/80-91-[14-44/1]-[14-44/1]
KB4/80-91-[14-44/1]-N[14-44/1]
KB4/80-91-N[14-44/1]-[14-44/1]
KB4/80-91-N[14-44/1]-N[14-44/1]
KB4/80-102-[14-44/1]-[14-44/1]
KB4/80-102-[14-44/1]-N[14-44/1]
KB4/80-102-N[14-44/1]-[14-44/1]
KB4/80-102-N[14-44/1]-N[14-44/1]
KB4/1400-168-[40-80/1]-[40-80/1]
KB4/1400-168-[40-80/1]-N[40-80/1]
KB4/1400-168-N[40-80/1]-[40-80/1]
KB4/1400-168-N[40-80/1]-N[40-80/1]
KB4/150-91-[19-44/1]-[19-44/1]
KB4/150-91-[19-44/1]-N[19-44/1]
KB4/150-91-N[19-44/1]-[19-44/1]
KB4/150-91-N[19-44/1]-N[19-44/1]
KB4/150-102-[19-44/1]-[19-44/1]
KB4/150-102-[19-44/1]-N[19-44/1]
KB4/150-102-N[19-44/1]-[19-44/1]
KB4/150-102-N[19-44/1]-N[19-44/1]
KB4/200-101-[22-47/1]-[22-47/1]
KB4/200-101-[22-47/1]-N[22-47/1]
KB4/200-101-N[22-47/1]-[22-47/1]
KB4/200-101-N[22-47/1]-N[22-47/1]
KB4/200-113-[22-47/1]-[22-47/1]
KB4/200-113-[22-47/1]-N[22-47/1]
KB4/200-113-N[22-47/1]-[22-47/1]
KB4/200-113-N[22-47/1]-N[22-47/1]
KB4/300-105-[30-60/1]-[30-60/1]
KB4/300-105-[30-60/1]-N[30-60/1]
KB4/300-105-N[30-60/1]-[30-60/1]
KB4/300-105-N[30-60/1]-N[30-60/1]
KB4/300-116-[30-60/1]-[30-60/1]
KB4/300-116-[30-60/1]-N[30-60/1]
KB4/300-116-N[30-60/1]-[30-60/1]
KB4/300-116-N[30-60/1]-N[30-60/1]

Related to	Standard Unit Price	Minimum order quantity	Standard Shipping Days ?	RoHS	Shaft Bore Dia. (machined) D1 (mm)	Shaft Bore Dia. (machined) D2 (mm)	Outer Dia. A (mm)	Length L (mm)	Allowable Torque (Nm)	Max. Rotational Speed (r/min)	Allowable Lateral Misalignment (mm)	Allowable Angular Misalignment (deg)	Allowable Axial Clearance (±) (mm)	Applicable Range (Bore 1)	Applicable Range (Bore 2)	Maximum D1 Bore Size with Keyway	Maximum D2 Bore Size with Keyway	Keyway D1	Keyway D2
Data sheet	-	1	12 Days	10	10 ～ 25.4	10 ～ 25.4	45	63	18	12800	0.2	1.5	0.5	10-25,4	10-25,4	25.4	25.4	No	No
Data sheet	-	1	12 Days	10	10 ～ 25.4	10 ～ 25.4	45	63	18	12800	0.2	1.5	0.5	10-25,4	10-25,4	25.4	25.4	No	Yes
Data sheet	-	1	12 Days	10	10 ～ 25.4	10 ～ 25.4	45	63	18	12800	0.2	1.5	0.5	10-25,4	10-25,4	25.4	25.4	Yes	No
Data sheet	-	1	12 Days	10	10 ～ 25.4	10 ～ 25.4	45	63	18	12800	0.2	1.5	0.5	10-25,4	10-25,4	25.4	25.4	Yes	Yes
Data sheet	-	1	12 Days	10	10 ～ 25.4	10 ～ 25.4	45	71	18	12800	0.25	2	0.5	10-25,4	10-25,4	25.4	25.4	No	No
Data sheet	-	1	12 Days	10	10 ～ 25.4	10 ～ 25.4	45	71	18	12800	0.25	2	0.5	10-25,4	10-25,4	25.4	25.4	No	Yes
Data sheet	-	1	12 Days	10	10 ～ 25.4	10 ～ 25.4	45	71	18	12800	0.25	2	0.5	10-25,4	10-25,4	25.4	25.4	Yes	No
Data sheet	-	1	12 Days	10	10 ～ 25.4	10 ～ 25.4	45	71	18	12800	0.25	2	0.5	10-25,4	10-25,4	25.4	25.4	Yes	Yes
Data sheet	-	1	12 Days	10	10 ～ 32	10 ～ 32	56	65	30	10300	0.15	1.5	0.6	10-30	10-30	30	30	No	No
Data sheet	-	1	12 Days	10	10 ～ 32	10 ～ 32	56	65	30	10300	0.15	1.5	0.6	10-30	10-30	30	30	No	Yes
Data sheet	-	1	12 Days	10	10 ～ 32	10 ～ 32	56	65	30	10300	0.15	1.5	0.6	10-30	10-30	30	30	Yes	No
Data sheet	-	1	12 Days	10	10 ～ 32	10 ～ 32	56	65	30	10300	0.15	1.5	0.6	10-30	10-30	30	30	Yes	Yes
Data sheet	-	1	12 Days	10	10 ～ 32	10 ～ 32	56	73	30	10300	0.25	2	1	10-30	10-30	30	30	No	No
Data sheet	-	1	12 Days	10	10 ～ 32	10 ～ 32	56	73	30	10300	0.25	2	1	10-30	10-30	30	30	No	Yes
Data sheet	-	1	12 Days	10	10 ～ 32	10 ～ 32	56	73	30	10300	0.25	2	1	10-30	10-30	30	30	Yes	No
Data sheet	-	1	12 Days	10	10 ～ 32	10 ～ 32	56	73	30	10300	0.25	2	1	10-30	10-30	30	30	Yes	Yes
Data sheet	-	1	12 Days	10	12 ～ 35	12 ～ 35	66	79	60	8700	0.15	1.5	0.6	12-35	12-35	35	35	No	No
Data sheet	-	1	12 Days	10	12 ～ 35	12 ～ 35	66	79	60	8700	0.15	1.5	0.6	12-35	12-35	35	35	No	Yes
Data sheet	-	1	12 Days	10	12 ～ 35	12 ～ 35	66	79	60	8700	0.15	1.5	0.6	12-35	12-35	35	35	Yes	No
Data sheet	-	1	12 Days	10	12 ～ 35	12 ～ 35	66	79	60	8700	0.15	1.5	0.6	12-35	12-35	35	35	Yes	Yes
Data sheet	-	1	12 Days	10	12 ～ 35	12 ～ 35	66	89	60	8700	0.25	2	1	12-35	12-35	35	35	No	No
Data sheet	-	1	12 Days	10	12 ～ 35	12 ～ 35	66	89	60	8700	0.25	2	1	12-35	12-35	35	35	No	Yes
Data sheet	-	1	12 Days	10	12 ～ 35	12 ～ 35	66	89	60	8700	0.25	2	1	12-35	12-35	35	35	Yes	No
Data sheet	-	1	12 Days	10	12 ～ 35	12 ～ 35	66	89	60	8700	0.25	2	1	12-35	12-35	35	35	Yes	Yes
Data sheet	-	1	12 Days	10	14 ～ 44	14 ～ 44	82	91	80	6900	0.2	1.5	0.5	14-44	14-44	44	44	No	No
Data sheet	-	1	12 Days	10	14 ～ 44	14 ～ 44	82	91	80	6900	0.2	1.5	0.5	14-44	14-44	44	44	No	Yes
Data sheet	-	1	12 Days	10	14 ～ 44	14 ～ 44	82	91	80	6900	0.2	1.5	0.5	14-44	14-44	44	44	Yes	No
Data sheet	-	1	12 Days	10	14 ～ 44	14 ～ 44	82	91	80	6900	0.2	1.5	0.5	14-44	14-44	44	44	Yes	Yes
Data sheet	-	1	12 Days	10	14 ～ 44	14 ～ 44	82	102	80	6900	0.25	2	0.8	14-44	14-44	44	44	No	No
Data sheet	-	1	12 Days	10	14 ～ 44	14 ～ 44	82	102	80	6900	0.25	2	0.8	14-44	14-44	44	44	No	Yes
Data sheet	-	1	12 Days	10	14 ～ 44	14 ～ 44	82	102	80	6900	0.25	2	0.8	14-44	14-44	44	44	Yes	No
Data sheet	-	1	12 Days	10	14 ～ 44	14 ～ 44	82	102	80	6900	0.25	2	0.8	14-44	14-44	44	44	Yes	Yes
Data sheet	-	1	22 Days	10	40 ～ 80	40 ～ 80	157	168	1400	5000	0.2	1.8	0.8	40-80	40-80	80	80	No	No
Data sheet	-	1	22 Days	10	40 ～ 80	40 ～ 80	157	168	1400	5000	0.2	1.8	0.8	40-80	40-80	80	80	No	Yes
Data sheet	-	1	22 Days	10	40 ～ 80	40 ～ 80	157	168	1400	5000	0.2	1.8	0.8	40-80	40-80	80	80	Yes	No
Data sheet	-	1	22 Days	10	40 ～ 80	40 ～ 80	157	168	1400	5000	0.2	1.8	0.8	40-80	40-80	80	80	Yes	Yes
Data sheet	-	1	12 Days	10	19 ～ 44	19 ～ 44	82	91	150	6900	0.2	1.5	0.5	19-44	19-44	44	44	No	No
Data sheet	-	1	12 Days	10	19 ～ 44	19 ～ 44	82	91	150	6900	0.2	1.5	0.5	19-44	19-44	44	44	No	Yes
Data sheet	-	1	12 Days	10	19 ～ 44	19 ～ 44	82	91	150	6900	0.2	1.5	0.5	19-44	19-44	44	44	Yes	No
Data sheet	-	1	12 Days	10	19 ～ 44	19 ～ 44	82	91	150	6900	0.2	1.5	0.5	19-44	19-44	44	44	Yes	Yes
Data sheet	-	1	12 Days	10	19 ～ 44	19 ～ 44	82	102	150	6900	0.25	2	0.8	19-44	19-44	44	44	No	No
Data sheet	-	1	12 Days	10	19 ～ 44	19 ～ 44	82	102	150	6900	0.25	2	0.8	19-44	19-44	44	44	No	Yes
Data sheet	-	1	12 Days	10	19 ～ 44	19 ～ 44	82	102	150	6900	0.25	2	0.8	19-44	19-44	44	44	Yes	No
Data sheet	-	1	12 Days	10	19 ～ 44	19 ～ 44	82	102	150	6900	0.25	2	0.8	19-44	19-44	44	44	Yes	Yes
Data sheet	-	1	12 Days	10	22 ～ 47	22 ～ 47	90	101	200	6400	0.2	1.5	0.5	22-48	22-48	47	47	No	No
Data sheet	-	1	12 Days	10	22 ～ 47	22 ～ 47	90	101	200	6400	0.2	1.5	0.5	22-48	22-48	47	47	No	Yes
Data sheet	-	1	12 Days	10	22 ～ 47	22 ～ 47	90	101	200	6400	0.2	1.5	0.5	22-48	22-48	47	47	Yes	No
Data sheet	-	1	12 Days	10	22 ～ 47	22 ～ 47	90	101	200	6400	0.2	1.5	0.5	22-48	22-48	47	47	Yes	Yes
Data sheet	-	1	12 Days	10	22 ～ 47	22 ～ 47	90	113	200	6400	0.25	2	0.8	22-48	22-48	47	47	No	No
Data sheet	-	1	12 Days	10	22 ～ 47	22 ～ 47	90	113	200	6400	0.25	2	0.8	22-48	22-48	47	47	No	Yes
Data sheet	-	1	12 Days	10	22 ～ 47	22 ～ 47	90	113	200	6400	0.25	2	0.8	22-48	22-48	47	47	Yes	No
Data sheet	-	1	12 Days	10	22 ～ 47	22 ～ 47	90	113	200	6400	0.25	2	0.8	22-48	22-48	47	47	Yes	Yes
Data sheet	-	1	12 Days	10	30 ～ 60	30 ～ 60	110	105	300	6000	0.2	1.5	0.5	30-60	30-60	60	60	No	No
Data sheet	-	1	12 Days	10	30 ～ 60	30 ～ 60	110	105	300	6000	0.2	1.5	0.5	30-60	30-60	60	60	No	Yes
Data sheet	-	1	12 Days	10	30 ～ 60	30 ～ 60	110	105	300	6000	0.2	1.5	0.5	30-60	30-60	60	60	Yes	No
Data sheet	-	1	12 Days	10	30 ～ 60	30 ～ 60	110	105	300	6000	0.2	1.5	0.5	30-60	30-60	60	60	Yes	Yes
Data sheet	-	1	12 Days	10	30 ～ 60	30 ～ 60	110	116	300	6000	0.25	2	0.8	30-60	30-60	60	60	No	No
Data sheet	-	1	12 Days	10	30 ～ 60	30 ～ 60	110	116	300	6000	0.25	2	0.8	30-60	30-60	60	60	No	Yes
Data sheet	-	1	12 Days	10	30 ～ 60	30 ～ 60	110	116	300	6000	0.25	2	0.8	30-60	30-60	60	60	Yes	No
Data sheet	-	1	12 Days	10	30 ～ 60	30 ～ 60	110	116	300	6000	0.25	2	0.8	30-60	30-60	60	60	Yes	Yes

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Basic information

Type	Bellows Type	Application	Standard / Servo Motor / Stepping Motor	Feature	High Torsional Rigidity / High Torque / High Accuracy / High Durability / No Backlash / Low Moment of Inertia
Bellows Part Material	Stainless Steel

Configure

72Suggestion of an applicable part number.

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The part number is completed.

Basic Attributes

Shaft Bore Dia. (machined) D1(mm)
[10-25.4/0.1mm Unit(s)][10-80/1mm Unit(s)]
Clear
Shaft Bore Dia. (machined) D2(mm)
[10-25.4/0.1mm Unit(s)][10-80/1mm Unit(s)]
Clear
Outer Dia. A(mm)
45

56

66

82

90

110

122

157
Clear
Length L(mm)
63

65

71

73

79

89

91

101

102

105

112

113

116

123

168
Clear
Allowable Torque(Nm)
18

30

60

80

150

200

300

500

800

1400
Clear
Max. Rotational Speed(r/min)
5000

6000

6400

6900

8700

10300

12800
Clear
Allowable Lateral Misalignment(mm)
0.15

0.2

0.25
Clear
Allowable Angular Misalignment(deg)
1.5

1.8

2
Clear
Applicable Range (Bore 1)
10-30

10-25,4

12-35

14-44

19-44

22-48

30-60

35-70

40-80
Clear
Applicable Range (Bore 2)
10-30

10-25,4

12-35

14-44

19-44

22-48

30-60

35-70

40-80
Clear
Maximum D1 Bore Size with Keyway
25.4

30

35

44

47

60

70

80
Clear
Maximum D2 Bore Size with Keyway
25.4

30

35

44

47

60

70

80
Clear
Keyway D1
- No
- Yes
Clear
Keyway D2
- No
- Yes
Clear
Type
- KB4
Clear
Filter by CAD data type
- 2D
- 3D
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