Metal Bellows Couplings BK- Servo- and Shaft Couplings

Please select a Metal Bellows Coupling:

MODEL SERIES BK	BK1	BK2 / BKC / BKL	BKH	BK3	BK4	BK5	BK6	BK7	BK8
	General \| Technical information \| 2D and 3D download

Series from 15 - 500 Nm

Data table and downloads Bellows Coupling BKC compact design series 15 - 500 Nm

Model BKC		Series
Model BKC		15	30	60	150	300	500
Rated torque (Nm)	T_KN	18	30	60	150	300	500
Overall length (mm)	A	48	58	67	78	94	100
Outer diameter (mm)	B	49	56	66	82	110	123
Fit length (mm)	C	16.5	21	23	27.5	34	34
Inner diameter possible from Ø to Ø H7 (mm)	D_1/2	8-28	12-32	14-35	19-42	24-60	32-75
Fastening screws ISO 4762	E	M5	M6	M8	M10	M12	M12
Tighting torque of the fastening screw (Nm)	E	8	15	40	75	120	125
Distance between centers (mm)	F	17.5	20	23	27	39	45
Distance (mm)	G	6.5	7.5	9.5	11	13	13
Moment of inertia (10^-3 kgm²)	J_ges	0.05	0.1	0.26	0.65	6.3	9
Hub material (standard) (steel on request)		Al	Al	Al	Al	Steel	Steel
approx. weight (kg)		0.13	0.21	0.37	0.72	3.26	3.52
Torsional stiffness (10³ Nm/rad)	C_T	23	31	72	141	157	290
axial (mm)	max.	1	1	1.5	2	2	2.5
lateral (mm)	max.	0.2	0.2	0.2	0.2	0.2	0.2
axial spring stiffness (N/mm)	C_a	30	50	67	77	112	72
lateral spring stiffness (N/mm)	C_r	315	366	679	960	2940	2200
Downloads		15	30	60	150	300	500
2D-DXF (ZIP folder)
3D-EXE (Viewer)
3D-STEP (ZIP folder)