• Guindy Machine Tools Limited

Chucks, Ball Lock Type

GMT offers universal ball lock chucks. These have certain distinctive advantages over wedge and lever type chucks. Jaw movement is achieved by sliding and swivel of the base jaws, which are amply proportioned. This results in less wear, less bearing pressure and less stress concentration in the jaws when compared to same sizes of wedge or lever type chucks. Apart from the radial clamping forces, these chucks provide an axial force to pull the component against the butting face. This is achieved as the jaw movement is along an arc. Wedge, basejaw, spherical aligner, and spherical bushes are made of nickel chrome steel, case hardened and precision ground on all working surfaces. Eccentric compensating type of chuck is essentially designed where the component is usually located between two centres, one on the chuck body and one on the tail stock of the machine. Since the line of the centres is defined, concentricity is guar-anteed and the chuck design allows adequate freedom for the jaws to adjust and accommodate the irregularities of the job before full clamping force is applied. Hard or soft jaws for universal ball lock chucks are to be made as per the configuration of the job. The top two jaws are offered in two styles: i) Special hard and soft jaws, fastened to the base jaws by means of T-nuts; and ii) Quick change jaw system (optional). The quick change design for either OD or ID clamping incorporates accurate positioning of the top jaw to the basejaw. A built in safety feature prevents the top jaws from accidentally being separated from base jaw.