This sleeve is built of a glass fiber-enhanced plastic sprayed onto a metal hub. The axial pre-tension of the metal bellows also negates any backlash to the driving and driven side, reducing bearing wear. An added benefit of the plastic connection is its ability to insulate between sides, both electrically and thermally. The couplings are presently offered in two styles. The BK5 uses aluminum for the bellows face and the hubs, and a standard clamping action to attach to shafting.
Stainless steel is used for the bellows, and is an option for the faces and hubs.
Depending on model, rated torques range up to 500 Nm at speeds up to 50K rpm, making the couplings suitable for use with encoders, tachometers, resolvers, and small servo drives in NC machine tools and robotic drives. Please report problems with this site to the Designfax site manager . Copyright 2001 by Nelson Publishing, Inc. . All rights reserved. View our terms of use and privacy policy .