Outer Assembly Collets grip the outside diameter of a part with segmented collet fingers that close evenly around the surface. The idea is simple. Instead of three jaw points squeezing at fixed spots, a collet spreads contact around a circle. That wrap gives a gentle hold with high concentricity, which is valuable on thin rings, sleeves, and gear blanks that do not like point loads.

This assembly sits on the machine spindle like a normal chuck body. A draw action tightens the collet, pulls the work toward the datum face, and sets the part ready for cutting. Tool access stays neat because the nose profile is compact. For families of parts, the operator swaps collet sizes and stoppers, then continues the run without a long reset.

Repute Engineering Works offers ranges that cover common diameters used in automotive, pump, and general engineering jobs. Collets are ground for roundness and sized to suit your component. Seats stay smooth, and the mechanism seals against chips and coolant so action remains free over a long period.