• Guindy Machine Tools Limited

Chucks, Manual

GMT offers manual chucks in models 03-01 to 08 and 03-22, with A f ranging from 125 to 800 mm. The conventional bevel gear and the scroll have been replaced by a worm and wormwheel with three circular cams, to operate the jaws. The chrome case hardened wormwheel-cum-cam ring ensures maximum resistance to wear. The entire reaction of the clamping forces of the three jaws are confined in and taken up by the wormwheel-cum-cam ring and not by the chuck body or component parts. The chuck body and the wormwheel-cum-cam ring are made from steel forgings, which provide the desired grain flow and thus minimise distortion under the clamping forces. All the parts are amply proportioned, made from high tensile alloy steels, hardened and ground wherever necessary to close limits of accuracy. The hard jaws are provided with gripping serrations to grip the work piece firmly. Three jaw chuck of sizes from 125 mm dia to 315 mm dia are offered with serrations of 1.5 x 60? on the base jaws. Size 400 mm dia to 800 mm dia are provided with 'V' serrations of 3/32"x 90?. Soft Jaws are made from low carbon steel and used for second operation. They are used for gripping finished diameters and are supplied as blanks. They are reversible, so that both ends can be used. The gripping diameters are to be machined in position on the chuck. This will ensure true running of the job on soft jaws, within close limits