ECCENTRIC COMPENSATING CHUCK WITH RETRACTABLE JAWS
Machine components centre to centre with great accuracy
GMT Eccentric Compensating Chuck with retractable jaws and face drive (PER) is used for machining forgings and black bars between centres in a single setup, (i.e.) no second operation necessary. This chuck is designed to machine components centre to centre with great accuracy.
The retractable jaws are actuated by a hydraulic cylinder and the jaws have an eccentric clamping drive. After machining operations are done, the clamping jaws are retracted without stopping the machine. The torque is then transmitted through the face driver for driving the jaws. The gripped portion can now be finished with fine depth of cut. This ensures that the component is machined right upto the chuck face and the centre to centre machining of component is completed.
The chuck body is made from forged medium carbon steel and toughened. The levers and hinge pins are made from nickel chrome steel, case hardened and ground in all working surfaces. The hard jaws are made from low carbon steel, case hardened and ground.
The special jaws are designed to clamp the component as close to the centre to avoid distortion of the component and to provide consistent gripping.