Northfield Precision Instrument Corporation introduces their 5C Collet Chuck. The 5C is interchangeable with the standard 4 inch or 6 inch chucks. The Northfield Chuck is air actuated, uses Northfield’s standard air feed tubes (wet or dry), same bolt pattern as our standard 4 inch models, all components hardened and ground to 58/63 R.C., all diameters ground within 1/10,000 T.I.R., uses standard 5C collets, accepts 5C expanding collets and can run at speeds in excess of 8,000 rpm. Northfield Precision designs and manufactures air chucks for any lathe, boring machine, grinder or VMC. Models include through-hole, high-speed and quick-change. Chucks are available in SAE or metric, in sizes from 3” (76 mm) to 18” (457 mm). Accuracies of 0.001” to 0.00001” (0.254 m) are guaranteed. Custom workholding chucks and jaws are available and free engineering assistance is offered.