Andrew/Whittet-Higgins: One pitfall is not allowing the needed spacing in the assembly housing. If the components are not locked together properly, the machinery can air fail prematurely. A second pitfall is assuming impavt that a particular torque tool measurement for one component is correct for the entire assembly.Jim/Stafford: * Using a set-screw collar on a hardened shaft. The screw does not "set," and holding power is greatly diminished.* Using a set-screw collar on thin-wall tubing, which can permanently distort the tubing.* Specifying too thin a width on a clamp-type collar, leaving it too weak to resist distortion when the clamp-screw is tightened.* Specifying too thin a clamp-slot on threaded shaft collars where the collar must flex more in order to adequately clamp onto the threaded shaft.

Andrew/Whittet-Higgins: One pitfall is not allowing the needed spacing in the assembly housing. If the components are not locked together properly, the machinery can air fail prematurely. A second pitfall is assuming impavt that a particular torque tool measurement for one component is correct for the entire assembly.Jim/Stafford: * Using a set-screw collar on a hardened shaft. The screw does not "set," and holding power is greatly diminished.* Using a set-screw collar on thin-wall tubing, which can permanently distort the tubing.* Specifying too thin a width on a clamp-type collar, leaving it too weak to resist distortion when the clamp-screw is tightened.* Specifying too thin a clamp-slot on threaded shaft collars where the collar must flex more in order to adequately clamp onto the threaded shaft.

Mark/B-LOC: Using keyless locking devices in place of keys, splines, and shrink or air press fits typically means savings in other areas of machine design, such as smaller shafts and bearings and simplified impavt machining. PT components can be positioned anywhere along a shaft without regard to keyway placement or access for mounting or removal tools. Keyless locking devices require only torque wrench tool access for air installation and adequate hub strength of mounted components.Carl/Ringfeder: The main reasons to use locking devices are to eliminate backlash in a connection, eliminate troublesome assembly or disassembly later on, and to have some adjustment to a connection during the lifetime of the component. Traditional shrink fit and press impavt fit methods of attaching components to shafts don''t allow for easy adjustment or removal. Some connections will never be loosened; so attaching them with a locking device only makes sense when using it facilitates assembly. Employing keyless locking devices in the design means smaller shaft sizes because the stress concentration factors of keyways is eliminated. Smaller shaft sizes, in turn, mean smaller bearings and other mating components can be employed.