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Hardinge’s Style-S collet pads are designed to take up less space, cost less and change over faster than solid collets. They can be shared among a variety of machine types, whether the master collet is mounted directly in a machine spindle (single or multiple), in a collet adaptation chuck or in a collet block.
The pads can be changed without removing the master collet from the spindle. A dovetail anchor design securely holds the pad in place and eliminates pressure on the clamp. There are no holes in the OD of the master collet or on the ID of the pads, resulting in maximum bearing on the workpiece and the spindle collet seat.
Standard pads are hardened and ground for increased life; semi-hard and soft emergency pads can be bored to size on the machine for improved concentricity. The pads are available in sizes ranging from S10 to S50 to fit Style-S master collets used in screw machines and CNC lathes. Style-S master collets designed for the company’s collet-ready CNC lathes are available in 16C, 20C, 25C, B42 and B65 sizes. HCAC collet adaptation chucks are available to enable chuck-style lathes to accept Style-S master collets and pads. The pads also can be used in FlexC collet blocks and 16C collet blocks for three- and four-axis milling applications.