Need collet capability on your jaw chuck lathe? Hardinge HCAC® Collet Chucks offer collet capability for higher precision and accuracy when you need it. Increase productivity, capability and control when compared to 3-Jaw chucks: ? Faster job changeover using collets ? Higher spindle speeds - reduced cycle times ? Larger work envelope ? Achieve higher precision ? Improved concentricity for optimum part roundness ? Exact part length control ? Interchangeable Style "S" master pads accommodate a wide range of workpiece sizes and configurations.