There are two types of fatigue to consider. Cyclical loading of the assembly during side loaded cutting operations and repetitive stress that is unavoidable like actuating the holder during cutting tool changes or transferring the tool into the machine spindle. The stress on an item like a pullstud is consistent but repetitive and must be managed by timed replacement. Stress on the cutting tool clamping system can be reduced with proper assembly processes but monitoring is required for both runout and clamping. For example, bearing races in collet chuck clamping nuts reduce physical wear and offer consistent clamping and runout over longer periods of time vs. a solid clamping nut. Cyclical fatigue can only be managed with holder material selection and operation parameters. Through hardened tool steel holders like shrink fit and hydraulic suffer more from this type of wear over the more traditional case hardened alloys for most other holder types. The balance of speed and force required for the application and the assembly Length:Diameter will generally set the cutting limits. Lower side forces will reduce the potential base holder wear but could limit productivity.