Metal Bellows Couplings BK

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MODEL SERIES BK	BK 1	BK 2, BKC and BKL	BKH	BK 3	BK 4	BK 5	BK 6	BK 7
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Series from 15 - 1500 Nm

Data table and Downloads Bellows Coupling BK 5 Series 15 - 1500 Nm

Model BK 5		Series
		15		30		60		80		150		300		500		800	1500
Rated torque (Nm)	T_KN	15		30		60		80		150		300		500		800	1500
Overall length (inserted) (mm)	A	60	67	71	79	85	95	94	106	95	107	114	128	136	149	150	172
Outside diameter (mm)	B	49		55		66		81		81		110		123		133	157
Fit length (mm)	C₁	22		27		32		36		36		43		51		45	55
Fit length (mm)	C₂	28		33		39		43		43		52		61		74	94
Inner diameter possible from Ø to Ø H7 (mm)	D₁	8-28		10-30		12-32		14-42		14-42		30-60		35-60		40-75	50-80
Inner diameter possible from Ø to Ø H7 (mm)	D₂	8-22		10-25		12-32		14-38		14-38		30-58		35-60		40-62	50-75
screw ISO 4762	E	M5		M6		M8		M10		M10		M12		M16		2xM16*	2xM20*
Tighting torque (Nm)		8		15		40		50		70		130		200		250	470
Distance between centers (mm)	F	17		19		23		27		27		39		41		2x48*	2x55*
Distance (mm)	G	6.5		7.5		9.5		11		11		13		16.5		18	22.5
axial Pretensioning approx. (mm)	H	0.2 to 1.0		0.5 to 1.0		0.5 to 1.5		0.5 to 1.5		0.5 to 1.5		0.5 to 1.5		1.0 to 2.0		1.0 to 2.5	1.0 to 2.5
Axial recovery of coupling max. ( N )		20	12	50	30	70	45	48	32	82	52	157	106	140	96	200	650
Moment of interia (10-³ kgm²)	J_ges	0.07	0.08	0.14	0.15	0.23	0.26	0.65	0.67	2.2	2.4	7.4	7.9	13.7	14.4	26.2	51.4
approx. weight (kg)		0.1	0.1	0.3	0.3	0.4	0.4	0.9	0.9	1.8	1.8	4	4	6.5	6.7	8.2	15.3
Torsional stiffness (10 ³ Nm/rad)	C_T	10	8	20	14	38	28	65	43	88	55	225	175	255	245	400	650
axial* (mm)	max. values	0.5	1	0.5	1	0.5	1	1	2	1	2	1.5	2	2.5	3.5	3	2
lateral (mm)		0.15	0.2	0.2	0.25	0.2	0.25	0.2	0.25	0.2	0.25	0.25	0.3	0.3	0.35	0.35	0.35
lateral spring stiffness (N/mm)	C_r	475	137	900	270	1200	420	920	290	1550	435	3750	1050	2500	840	2000	3600
Downloads Short Version		15		30		60		80		150		300		500		800	1500
2D-DXF (ZIP folder)
3D-EXE (Viewer)
3D-STEP (ZIP folder)
Downloads Long Version		15		30		60		80		150		300		500		800	1500
2D-DXF (ZIP folder)
3D-EXE (Viewer)
3D-STEP (ZIP folder)