Screwless shaft-to-hub connections

Inner and outer split sleeves with opposing tapers form this friction-based system. A clamping nut climbs tapered threads of the inner sleeve to grip the shaft.

At the same time, tightening torque pushes the outer sleeve up the inner sleeve's inclined surface, distributing clamping force in the axial direction. Benefits include 360-degree clamping, no screws or keyways, and quick assembly/disassembly.

Christoph Rickli, Carl Sigerist AG, Schaffhausen, Switzerland; Tel: +41 52 644 34 37; Fax: +41 52 644 34 01; [email protected]. For more information, enter 510

Submit your ideas and rough drawings for this section to John Lewis, Designer's Corner, Design News, 275 Washington St., Newton, MA 02458