Rohm KBF-N Instructions De Service page 16

7. Instructions for turning out the clamping jaws
In order to achieve maximum concentricity precision, the clamping diameter in the clamping
jaws must be turned out or ground out under clamping pressure.
Internal clamping:
E.g. with a Röhm jaw turn--out device BAV type 091
See catalog product groups 1--4: Page 3033
External clamping:
Attention: In order to guarantee a complete pull--down movement of the clamping
jaws, the turn--out ring may not contact the chuck on the plane face.
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