Metal Bellows Couplings BK - R + W Coupling Technology - (Version JPG) - Page n° 9 - PDF Catalogue | Technical Documentation

See other catalogues for R + W Coupling Technology

Torque limiter, Flexible coupling, Bellow coupling, Jaw coupling, Linear coupling

Text version of the page

MODEL BK4

for Fanuc-Motors

TECHNICAL SPECIFICATIONS

Properties:

Material: Design:

■ for conical shafts

■ easy mounting and dismounting

■ high degree of operating dependability

Bellows made of highly flexible high-grade stainless steel, the hub material is steel.

Spindle-side:

With conical sleeve and strong captive ISO 4017 draw-off screws

Motor-side:

Conical hub 1 : 10 and a keyway.

A-2

E ISO 4017

C,H

Temperature range:

Speeds:

Service life:

Backlash:

Brief overloads: Tolerance: Custom Designs:

-30 to +120° C (3.6 F - 270 F)

Up to 10,000 rpm, over 10,000 rpm available with a finely balanced version.

These couplings are maintenance-free if the technical ratings are not exceeded.

Absolutely backlash-free due to frictional

clamp connection.

Acceptable up to 1.5 times the value specified.

On the hub/shaft connection 0.01 to 0.05 mm

With varied tolerances, keyways, non-standard material, and bellows are available upon request.

Ordering example


Model BK 4			Series
Model BK 4							60		150
Rated torque	(Nm)		15		30		60		150
Overall length	(mm)	^a	47	54	68	76	72	82	82	94
Outer diameter of bellows	(mm)	b	49		55		66		81
Fit length	(mm)		19		22		27		32
Inner diameter from 0 to 0 H7	(mm)		10-22		12-23		12-29		15-37
Fastening screws 6x			M4		M5		M5		M6
Tightening torque of the	(Nm)		4		6		8		12
fastening screws	(Nm)
DIN 933 draw-off screw 3x		f	M4		M4		M5		M5
Shaft diameter	(mm)		20		27		30		30
Shaft length	(mm)	h	8.5		22		18		20
Moment of inertia (10^-3 kgm²)		^J,n,n	0.10\|0.12		0.2210.27		0.58	0.61	1.1	1.4
Approx. weight	(kg)		0.25		0.4		0.8		1.35
Torsional stiffness (10 ³	Nm/rad)		20	15	39	28	76	55	175	110
axial TJIfFJO -	(mm)	Max	1	2	1	2	1.5	2	2	3
lateral TjSEH	(mm)	value	0.15	0.2	0.2	0.25	0.2	0.25	0.2	0.25
axial spring stiffness	(N/mm)	c,	25	15	50	30	72	48	82	52
lateral spring stiffness	(N/mm)	c	475	137	900	270	1200	420	1500	435
cone 0 (Fanuc Motor)	(mm)	I	11		16		16		16
Keyway wide	(mm)	K	4		5		5		5

Technical instructions:

Before mounting the coupling, the concial sleeve (1) has to be removed. After sliding the coupling on to the motor shaft (3) the nut (4) can be put on through the bellows body (4).

To tighten the nut a special DIN 896 B key is used. The bore (5) is used for holding the coupling while tightening the nut.

Key DIN 896 B

(1Nm 8.85 in lbs) Higher torques on request max. angular misalignment see BK 1

www.rw-america.com

R+W

Metal Bellows Couplings BK - R + W Coupling Technology - #9

Torque limiter, Flexible coupling, Bellow coupling, Jaw coupling, Linear coupling