Northfield Precision sliding-jaw air chuck

The Model 625 sliding-jaw air chuck (0.0001” TIR) is available with special top tooling attached.


Island Park, New York – Originally a custom solution for a customer that needed grip on the IDs of continuously variable transmission (CVT) sheaves for runout inspection, the Model 625 sliding-jaw air chuck (0.0001” TIR) is available with special top tooling attached.

Top Jaws are permanently mounted onto the chuck's master jaws to grip the ID of the part's central bore. An air-detect axial locator (three air holes evident in its top surface) was incorporated to ensure proper seating of the part upon robot-arm placement onto the chuck. This chuck is capable of 0.0001” TIR total accuracy/repeatability on all critical surfaces that interface with the part.

Northfield Precision Instrument air chucks for lathes, boring machines, grinders, and VMCs include through-hole, high-speed, and quick-change. Chucks are available in SAE or metric, in sizes from 3” (76mm) to 18” (457mm). Accuracies of 0.00100” to 0.00001” (0.254m) are guaranteed.

Source: Northfield Precision Instrument Corp.