This form knurling holder enables conical knurlings on right- and left-handed lathes especially in DIN-72783. The modular system allows the use of several different shanks keeping the same components. A threaded spindle enables easy adjustment to the workpiece´s diameter and an auto-centering system compensates a possible disalignment between the turret and the machine axis.
Mechanical stress is stood by the holder and not transmitted to the bearings of the machine. Even the bending risk in the workpiece is eliminated as each knurl’s pressure compensates one with each other.