Lexair high pressure hydraulic collet closers feature all steel construction and operating pressures to 5000 PSI. The units accept "5C", "16C", "3J", "22J" or "35J" style collets. All models feature double acting operation and fixed-length design to keep the collet and parts being held stable to maintain a fixed height from part to part. Standard features include reamed orientation holes in the base for mounting and the ability to be used in multiple configurations with connector bushings that eliminate external plumbing between units. Holding forces generated by the drawtube are 1.9 times the line pressure applied so extremely high clamping forces can be generated. All models are supplied with a matching collet wrench. Lexair can supply precision machined standard collets, master collets and pads, emergency collets, serrated collets plus uniquely shaped collets by special order