ROHM Tool clamping units - Manual (Page 17)

7. Identifying and remedying problems
Problem Cause
The steep taper tool is
incorrectly installed
¯ reference setting is incorrect
¯ clamping set lock nut has come
loose
¯ wrong clamping set has been
installed (see tool standards)
¯ wrong or faulty tool draw-in bolt
¯ spindle has wrong or faulty in-
ternal profile
¯ broken or worn disc springs
¯ tool is not ”tracking”
The steep taper tool will not
come off
¯ non-existent or insufficient unc-
lamping force available
¯ defective unclamp unit
¯ fretting rust on the steep taper
The steep taper tool comes
out during operation ¯ segmented collet clamp or
clamping set broken
¯ drawbar or drawbar extension
broken
¯ draw-in bolt or steep taper
shank is broken
¯ centripetal force too low, force
transmission of built-in clamp
not in clamping range
8. Spare parts
Only use ORIGINAL RÖHM spare parts or
components obtained from authorised RÖHM
suppliers. RÖHM GmbH does not accept and
liability for damage resulting from the employ-
ment of parts supplied by other manufacturers.
For simple ordering of spare parts or individual
components always state the 6-digit ID number
engraved on the assembly and, if available, the
works number. This comprises a letter with two
digits and possibly a series number, stated ei-
ther on the rating plate or next to the ID number.
Remedy
¯ see Point 5.4: Assembly of clamping set
¯ as above
¯ check the built-in parts and replace if necessary
¯ as above
¯ as above
¯ replace spring set
¯ test and insert tool changer
¯ increase unclamping pressure to max. permitted
pressure
¯ test or replace unclamp unit
¯ test the steep taper angle in the spindle and on the tool
¯ replace defective parts with new parts
¯ as above
¯ as above
¯ see Point 6: Maintenance, 6.1: Servicing or
5.4: Assembly of clamping set
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