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BK5-Bellows coupling with tapered press-fit connection

Easy installation and removal
Electrically and thermally isolating
Absolutely backlash free and torsionally stiff

DetailsParameter

Features
- Easy installation and removal
- Electrically and thermally isolating
- Absolutely backlash free and torsionally stiff
Temperature range
- -30 °C to +100 °C (-22 °F to +212 °F)
Design
- Two clamping 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:
  - up to series 80 – aluminum
  - from series 150 – 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

	BK5 15		BK5 30		BK5 60		BK5 80		BK5 150		BK5 300		BK5 500		BK5 800	BK5 1500
Model	BK5 15 60	BK5 15 67	BK5 30 71	BK5 30 79	BK5 60 85	BK5 60 95	BK5 80 94	BK5 80 106	BK5 150 95	BK5 150 107	BK5 300 114	BK5 300 128	BK5 500 136	BK5 500 149	BK5 800 150	BK5 1500 176
Rated torque (Nm)	15	15	30	30	60	60	80	80	150	150	300	300	500	500	800	1,500
Coupling length (mm)	60	67	71	79	85	95	94	106	95	107	114	128	136	149	150	176
Bore diameter from ? to ? H7 (mm)	8-28	8-28	10-30	10-30	12-35	12-35	14-42	14-42	14-42	14-42	24-60	24-60	35-60	35-60	40-75	50-80
Outside diameter (mm)	49	49	55	55	66	66	81	81	81	81	110	110	124	124	133	157
Torsional stiffness (103 Nm/rad)	10	8	20	14	38	28	65	43	88	55	225	175	255	245	400	650

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