Zero-Max’s heavy-duty models of the ETP Express keyless shaft bushings are now available in 20 mm, 40 mm and 60 mm sizes. The shaft-locking bushings provide fast and frequent mounting/dismounting capabilities with only one radial screw. This saves space in a system and provides accurate mounting without axial movement of the bushing along the shaft. Providing up to four times the radial load capacity of standard models, the heavy-duty models are designed to provide a tight connection between the shaft and mounted components. When tightened, the radial screw compresses a pressure medium with the double-walled sleeve that expands and creates a solid connection between shaft and the mounting member. Its uniform surface pressure prevents damage to surfaces and enables the use of shafts without keyways. Providing concentricity to .001 inch T.I.R., the bushings handle torque ranges from 40 lbs. to 6,400 lbs. They position in seconds, require no lubrication, are easy to keep clean, and can handle a temperature range from -22 F to 180 F. – zero-max.com