HSR

1.

Multi surface can be turned in one chucking

2.

No need of spindle stop for indexing

3.

High accuracy of indexing.

HSRT

1.

Multi surface can be turned in one chucking

2.

No need of spindle stop for indexing

3.

High accuracy of indexing.

4.

Indexing angle is 30° or 60°

HSRW

-

The indexing chuck. Type HSRW are essentially identical with those of the chuck type HSR.
A particular difficulty in machining gate valve bodies consists in having to set the inside wedge angle of the sealing faces in a position relative to the face to be machined so that all necessary turning operation can be performed in one chucking set-up. This is only possible if the valve seat and connecting flange have a common turning center, which can possibly be achieved by moving the component by the center line, to a common center line of the chuck jaw.