- Gear scroll drop-forged, balanced, and hardened.
- Flanks of scroll and of jaw serrations are ground.
- High concentricity.
For spindle noses with thread to DIN 800. The chuck is fitted to a flange from the rear by means of screws and this flange is then mounted on to the lathe spindle. The flange blanks (see No. 317000) must always be adapted first to the machine and then to the lathe chuck.
DIN 6350 − Form A − Cushman system.
1 set = 4 hardened inside jaws, stepped on the outside.
1 set = 4 hardened outside jaws, stepped on the inside.
1 clamping wrench and fastening screws or studs depending on the chuck.
For spare and additional jaws see No. 314100 − 315300. For swarf protection see No. 312800.