Constructional changes
Implementation of structural changes
By conversions, changes, and reworking, e.g. additional threads,
holes, or safety devices can impair the functioning or safety of the
product or damage it.
• Structural changes should only be made with the written
approval of SCHUNK.
Spare parts
Use of unauthorized spare parts
Using unauthorized spare parts can endanger personnel and
damage the product or cause it to malfunction.
• Use only original spare parts or spares authorized by SCHUNK.
Chuck jaws
Requirements of the chuck jaws
Stored energy can make the product unsafe and poses the danger
of serious injuries and considerable material damage.
• Only change chuck jaws if no residual energy can be released.
• Do not use welded jaws.
• The chuck jaws should be designed to be as light and as low as
possible. The clamping point must be as close as possible to the
chuck face (clamping points at a greater distance lead to
greater surface pressure in the jaw guidance and can
significantly reduce the clamping force).
• If for constructional reasons the special chuck jaws are heavier
than the top jaws assigned to the lathe chuck, greater
centrifugal forces must be accounted for when defining the
required clamping force and the recommended speed.
• The maximum recommended speed may only be operated in
conjunction with maximum actuating force and only with the
lathe chuck in optimum, fully functioning condition.
• After a collision, the lathe chuck and the chuck jaws must be
subjected to a crack test before being used again. Damaged
parts must be replaced with original SCHUNK spare parts.
• Renew the chuck jaw mounting screws if there are signs of
wear or damage. Only use screws with a quality of 12.9.
• Screw the jaw mounting screws into the bore holes furthest
apart.
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