Metal Bellows Couplings BK

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MODEL SERIES BK	BK1	BK2, BKC and BKL	BKH	BK3	BK4	BK5	BK6	BK7	BK8
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Series from 15 - 10,000 Nm

Data table and Downloads Bellows Coupling BK3 Series 15 - 10,000 Nm

Model BK3		Series
		15		30		60		150		200		300		500		800	1500	4000	6000	10000
Rated torque (Nm)	T_KN	15		30		60		150		200		300		500		800	1500	4000	6000	10000
Overall length (mm)	A	48	55	57	65	66	76	75	87	78	90	89	103	97	110	114	141	195	210	217
Outer diameter of bellow (mm)	B	49		55		66		81		90		110		124		133	157	200	253	303
Fit length (mm)	C	19		22		27		32		32		41		41		50	61	80	85	92
Inner diameter possible from Ø to Ø H7 (mm)	D	10-22		12-23		12-29		15-38		15-44		24-56		24-60		30-60	35-70	50-100	60-140	70-180
6x fastening screws ISO 4017	E	M4		M5		M5		M6		M6		M8		M8		M10	M12	M16	M16	8xM16
Tighting torque of the fastening screws (Nm)	E	4		6		8		12		14		18		25		40	70	120	150	160
3 x draw-off screw ISO 4017	F	M4		M4		M5		M5		M6		M6		M6		M8	6xM8	6xM10	6xM10	8xM10
Outer diameter hub (mm)	G	49		55		66		81		90		110		122		116	135	180	246	295
Mass moment of inertia (10^-3 kgm²)	J_ges	0.12	0.59	0.3	0.34	0.54	0.73	1.2	1.6	1.7	2.5	5.1	5.9	9.1	9.9	13.2	34.9	85.5	254	629
Approx. weight (kg)		0.25		0.4		0.8		1.2		1.8		3		4.2		5.6	8.2	23	32.6	45.5
Torsional stiffness (10³ Nm/rad)	C_T	20	15	39	28	76	55	175	110	191	140	450	350	510	500	780	1304	3400	5700	10950
Axial (mm)	max.	1	2	1	2	1.5	2	2	3	2	3	2.5	3.5	2.5	3.5	3.5	3.5	3.5	3	3
Lateral (mm)	max.	0.15	0.2	0.2	0.25	0.2	0.25	0.2	0.25	0.25	0.3	0.25	0.3	0.3	0.35	0.35	0.35	0.4	0.4	0.4
Axial spring stiffness (N/mm)	C_a	25	15	50	30	72	48	82	52	90	60	105	71	70	48	100	320	565	1030	985
Lateral spring stiffness (N/mm)	C_r	475	137	900	270	1200	420	1550	435	2040	610	3750	1050	2500	840	2000	3600	6070	19200	21800
Downloads Short Version		15		30		60		150		200		300		500		800	1500	4000	6000	10000
2D-DXF (ZIP folder)
3D-EXE (Viewer)
3D-STEP (ZIP folder)
Downloads Long Version		15		30		60		150		200		300		500		800	1500	4000	6000	10000
2D-DXF (ZIP folder)
3D-EXE (Viewer)
3D-STEP (ZIP folder)

(1 Nm = 8.85 in lbs) max. angular misalignment see Bellow Coupling BK1

31.05.2006