Position the ETP Bush on the shaftproduct, & just tighten the screw. This tightening increases the pressure on the medium which expands the innerouter walls of the Bush to grip the shaft and the component simultaneously.
These keyless bushings consist of a stainless steel metal bellow joined together to Al or Steel hubs provide a complete backlash free transmission between 2 shafts, with various other advantages. Designed to transmit a torque range of 0.4 Nm to 5, 000 Nm with bore diameters from 3mm to 85 mm in divergent models, including plain borekeyway, side and top clamping, internal and external conical hubs.
ETP bushes consists of a thin walled cylinder filled by a 'medium'. When this medium is pressurised, they tend to expand the thin walled cylinders and grip both the shaft and the component at the same time.