The
Engineer's
Blog

The big gearboxes that drive cable drums do not come cheap. Yet engineers often make a design mistake that can shorten the gearbox’s working life. This mistake involves the use of a rigid, direct coupling between the gearbox output shaft and the cable drum.

 Heavy-duty shaft couplings have traditionally had a couple of defining design characteristics. For one, these couplings usually rely on keyed shaft connections. For another, they tend to be overengineered with regard to stiffness.

Ringfeder Power Transmission's new RfN 5571 series of flange couplings for heavy duty applications offer easy installation and have higher torque capacity than standard press fits.