Turned or bored soft blank top jaws from Dillon Manufacturing Inc., provide a smooth gripping surface that holds the workpiece tighter as a result of a greater coefficient of friction without marring the workpiece. Extra-wide jaws are available to provide a wider gripping surface for large diameter parts. Serrated soft top jaws are available in sizes as large as 10" in height. Tongue-and-groove, Acme key style, or square serrated style jaws can be produced to 14" in height, and are well-suited for longer workpieces. Optical checking is used to ensure proper pitch and form on mounting serrations.
Soft blank top jaws can be removed and later reused for the same operation or by machining to grip a different part until it is consumed. Special soft jaws have production lead times of three days or less. They can be produced from 1018, 4140, 8620, 1045, A2, stainless steel, aluminum, brass and plastic.
According to the company, special soft top jaws are ideal for second operation finishing work such as shafts, gear blanks, wheel hubs, bearings or extra-long workpieces that require special attention and handling.