Hardened Reversible Jaws and Soft Top Jaws
Make sure that the top jaws are set for clamping on the fine
serration so that no more than 2/3 of the jaw stroke has to be
extended (clamping reserve).
Hardened reverse jaws may be used only in sets as packaged at
the factory, since they are ground in sets on the chuck. Normally,
one set of hardened reverse jaws is ordered with the chuck. During
assembly and disassembly of the reverse jaws numbered 1 to 3
make sure that the single jaws are paired with the base jaws with
the same numbers in order to achieve good true running
properties.
Turning of the soft top jaws must be performed on the chuck in
the same clamping position and at the same operating pressure
specified for machining of the workpiece.
Hardened roughing jaws whose clamping surfaces have conical
teeth with good grip should be used for rough turning work or
preturned workpieces.
Disassembly
1 Unscrew both pneumatic swivelling elbow screw-fittings from
the distributor ring, remove front-mounted power chuck from
spindle head.
2 After unscrewing the 3 hexagon socket head screws (item 38)
in 3 pieces (item 9, 11, 12), remove the distributor ring
backwards from the chuck.
Note
The chuck is pressurized! It is imperative that the valve sys-
tem (item 18) be removed before any further disassembly!
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