HSC-L Top pie jaws, QC-version

Pie-shaped jaws provide full circle contact with the workpiece. This condition is recommended for thin walled workpieces which can become distorted during chucking. QC-Top jaws got pre-hardened to 30-35 HRC and feature finished ground tapered locating holes. On this hardness the machining of the clamping diameter is possible without problems, also avoid this hardness a too quick wear out. These jaws can be rough and finish bored on the chuck or on a QC jaw turning fixture off-line.