Masa Tool’s Microconic miniaturized collet system consists of two components: a “right-size”-style collet and a cartridge that fits directly into Swiss spindles. The system provides precise control of the collet closure so that delicate workpieces can be held firmly without damage, the company says. The cartridge offers extended nose capabilities while remaining solid and rigid. Its small diameter ensures that tooling and coolant have easy access to the workpiece, eliminating the need for extended-nose collets and decreasing concentricity runout.
According to Masa Tool, the collets are manufactured with special grinding techniques to provide accuracy, high gripping force and tolerance for workpiece size differential. Each finger of the collet has a separate conical surface that accurately applies gripping force. The chucking method is available for both draw-type (5C) and push-type or dead length systems (TF25) used in subspindles of Swiss-type CNC lathes. The collets are available in size increments of 0.050 mm (0.001"). Diameters range from 1 to 10 mm (0.039" to 0.393").