BKC

Bellows couplings

The BKC bellows coupling from R+W Couplings has an economically interesting design and is easy to assemble due to clamping hubs. Its short length makes this coupler very suitable for installation in compact spaces. In addition, the BKC coupling possesses a low mass moment of inertia, can handle high speeds and by using friction clamp connection, this precision coupling is absolutely free of backlash. Thanks to its forced bellows shape, the element can simultaneously accommodate lateral, axial and angular misalignments. As long as they do not fall outside the maximum area, no metal fatigue will occur in the bellows material and the clutch is completely free of wear. For specific questions about bellows couplings, contact VARIODRIVE.

Implementation

Compact clamp hub

Nom. Torque

15-500 Nm

Speed

up to 30,000 rpm

Temperature range

-30 to +100 oC

Bellows material

STAINLESS STEEL

Hub material

Steel or Alu

Peak load

Up to 1.5x nom. Torque

Backlash

No

Service-life

No service

Optional

ATEX, clean room version

- Option 2

> 30,000 rpm with balanced version G = 2.5 (see table)

Optional

Customer-specific design, ATEX and cleanroom version on request

Datasheets

Bestelcode instructies
ATEX instructies
Datasheet BKC

Manuals

Manual BK/MK koppelingen

Tabel

BKC Series		15	30	60	150	300	500
Rated torque (Nm)	TKN	15	30	60	150	300	500
Overall length (mm)	A-2	48	58	67	78	94	100
Fit length (mm)	c	16,5	21	23	27,5	34	34
Inside diameter possible from Ø to Ø H7 (mm)	DI/D2	8-28	12-32	14-35	19-42	24-60	32-75
Outside diameter (mm)	B	49	56	66	82	110	123
Moment of inertia (10kgm2)	Jges.	0,05	0,1	0,26	0,65	6,3	9
Approximate weight (kg)		0,13	0,21	0,37	0,72	3,26	3,52
Torsional stiffness (10 3 Nm/rad)	CT	23	31	72	141	157	290
Axial (mm))	max.	1	1	1,5	2	2	2,5
Latera ± (mm)	max.	0,2	0,2	0,2	0,2	0,2	0,2
Angular ± (degree)	max.	1	1	1	1	1	1
Axial spring stiffness (N/mm)	ca	30	50	67	77	112	72
Lateral spring stiffness (N/mm)	cr	315	366	679	960	2940	2200
Fastening screw (ISO 4762)	E	M5	M6	M8	M10	M12	M12
Tightening torque of the fastening screw (Nm)	E	8	15	40	75	120	125
Distance between centerlines (mm)	F	17,5	20	23	27	39	45
Distance (mm)	G	6,5	7,5	9,5	11	13	13
Hub material		Aluminium	Aluminium	Aluminium	Aluminium	Steel	Steel
Speed max. with G = 25 balancing (min-I)		80000	70000	60000	50000	40000	30000
		15	30	60	150	300	500

Downloads

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Datasheets
Manuals

Datasheets
Datasheets
Datasheets
Manuals

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Frequently Asked Questions

How can I place an order with VARIODRIVE?

You can place an order with VARIODRIVE by sending your request to orders@variodrive.nl. Your request will then be processed directly by our internal sales team.

Why should I choose a complete solution from VARIODRIVE?

By choosing VARIODRIVE’s complete solution, you won’t need to worry about integrating different drive components into the machine’s drive chain. We stand behind our complete solution and can guarantee its functionality.

Why should I choose VARIODRIVE's system warranty?

Due to our in-depth knowledge of our products and their integration into applications, we can provide a system warranty. At that point, we guarantee that the application will function using our motion control and traction solutions.

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BKC

Specifications