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BK6-Bellows coupling with external clamping ring and tapered press-fit connection

Axial mounting possible
Easy installation and removal
Electrically and thermally insulating
absolutely backlash free and torsionally stiff

DetailsParameter

Features
- Axial mounting possible
- Easy installation and removal
- Electrically and thermally insulating
- absolutely backlash free and torsionally stiff
Temperature range
- -30 °C to +100 °C (-22 °F to +212 °F)
Design
- Two conical clamping ring hubs, one of which has a tapered male projection for bind mate connection
- Brief overloads of up to 1.5x the rated torque are acceptable
Material
- Bellows: high grade stainless steel
- Hubs: steel
- Tapered male segment: high strength plastic
Service life
- R+W bellows couplings are fatigue resistant and wear free for an infinite service life, as long as the technical limits are not exceeded
Fit clearance
- Overall shaft / hub clearance of 0.01 – 0.025 mm
Special solutions
- Various materials, tolerances, dimensions and performance ratings available for custom applications on request
ATEX (Optional)
- For use in hazardous zones 1/21 and 2/22, the metal bellows has been authorized under directive 94/9/EG and is available with certification

	BK6 15		BK6 30		BK6 60		BK6 150		BK6 300		BK6 500		BK6 800	BK6 1500
Model	BK6 15 58	BK5 15 65	BK6 30 68	BK6 30 76	BK6 60 79	BK6 60 89	BK6 150 97	BK6 150 109	BK6 300 113	BK6 300 127	BK6 500 132	BK6 500 145	BK6 800 140	BK6 1,500 158
Rated torque (Nm)	15	15	30	30	60	60	150	150	300	300	500	500	800	1,500
Coupling length (mm)	58	65	68	76	79	89	97	109	113	127	132	145	140	158
Bore diameter from ? to ? H7 (mm)	10-22	10-22	12-24	12-24	12-32	12-32	15-40	15-40	24-56	24-56	30-60	30-60	40-62	50-75
Outside diameter (mm)	49	49	55	55	66	66	81	81	110	110	124	124	133	157
Torsional stiffness (103 Nm/rad)	10	8	20	14	38	28	88	55	225	175	255	245	400	660

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