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BK4-Bellows coupling for tapered shafts

For tapered shafts
Easy to mount and dismount
high installed concentricity

DetailsParameter

Features
- For tapered shafts
- Easy to mount and dismount
- high installed concentricity
Temperature range
- -30 °C to +100 °C (-22 °F to +212 °F)
Design
- Conical clamping system opposite 1:10 tapered bore with feather keyway
- Brief overloads of up to 1.5x the rated torque acceptable
Material
- Bellows: high grade stainless steel
- Hubs: steel
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

	BK4 15		BK430		BK4 60		BK4 150
Model	BK4 15 47	BK4 15 54	BK4 30 68	BK4 30 76	BK4 60 72	BK4 60 82	BK4 150 82	BK4 150 94
Rated torque (Nm)	15	15	30	30	60	60	150	150
Coupling length (mm)	47	54	68	76	72	82	82	94
Bore diameter from ? to ? H7 (mm)	10-22	10-22	12-23	12-23	12-29	12-29	15-37	15-37
Outside diameter (mm)	49	49	55	55	66	66	81	81
Torsional stiffness (103 Nm/rad)	20	15	39	28	76	55	175	110
Taper Diameter ?(Fanuc motor (mm)	11	11	16	16	16	16	16	16

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