SCHUNK ROTA EP 380-127, Assembly And Operating Manual, Page: 53 / 73

Commissioning and maintenance
02.00|0889073_ROTA TB-TBS-EP |en 53
chuck. When installing and removing the reversible jaws
numbered 1 to 3, make sure that the individual jaws are
installed/removed on/from the base jaws with the same
designation in order to ensure a high level run-out accuracy.
The soft top jaws are turned on the chuck in the same clamping
position and under the same operating pressure as are used for
machining the workpiece. When doing this, it is important to
ensure that all the mounting screws are screwed in tightly and
evenly.
The fine serration of the base jaws and top jaws should always be
cleaned, especially when the top jaws are adjusted, otherwise the
run-out accuracy will be impaired. Hardened reversible jaws and
soft top jaws must be tightened to the same torque. Insufficient
tightening of the top jaws will cause significant run-out
inaccuracies!