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13. Operational faults and the elimination of such
Operational faults Possible cause Remedy
Transverse or longitudinal skid
cannot be moved or can only be
moved with considerable force
Guide play is set too narrowly Adapt the guide play
Rust on work pieces of machine
parts when using coolant
lubrication
Wrong coolant set Check the mixing ratio of the
coolant and correct if required
(never cool with water alone!)
Tool holder cannot be inserted
into the main spindle
An incorrect tool taper of the tool
holder has been used
Only use the appropriate tool
holders for the machine
Inner core of the reducing sleeve
or outer cone of the tool holder is
contaminated
Clean the relevant cone
Tool cannot be removed from
the tailstock sleeve
Tailstock sleeve is not fully
cranked back
Fully crank back the tailstock
sleeve to automatically eject
tools with ejector lugs
Use tool without ejector lugs Place a soft and sufficient wide
inlay between the tool and
tailstock front. Now crank the
tailstock sleeve back to push
the tool out.
lugs is possible by screwing a
suitable threaded pin into place
which extends the length of the
tool backwards)