Model G0740 (Mfg. Since 11/12)
-33-
Chuck Installation
Figure 31. Inserting camlock studs into spindle
cam holes.
INCORRECTCORRECT
Figure 32. Cam line positioned between the "V"
marks after the camlocks are fully tightened.
Cam line between “V”s
To ensure accurate work, it is extremely important
to make sure the spindle nose and chuck mating
surfaces/tapers are clean. Even a small amount of
lint or debris can affect accuracy.
The chuck is properly installed when all camlocks
are tight, the spindle and chuck tapers firmly
lock together, and the back of the chuck is firmly
seated against the face of the spindle all the way
around—without any gaps.
5. Incrementally tighten the camlocks in a criss-
cross or star pattern to ensure that the chuck
seats evenly against the spindle.
When the chuck is fully seated and all the
camlocks are tight, verify that the cam line
is between the two “V” marks on the spindle
nose, as shown in the following figure.
Figure 33. Correcting an improperly installed
stud.
Stud Too High:
Turn In
One-Turn
Stud Too Low:
Turn Out
One-Turn
INCORRECT INCORRECT
— If the cam line is NOT between the "V"
marks when the camlock is tight, the stud
may be installed at the incorrect height.
To fix this, adjust the stud height as
shown in the following figure. Make sure
to re-install the stud cap screw afterward.
— If adjusting the stud height does not
correct the problem, try swapping stud
DISCONNECT LATHE FROM POWER!
Use an appropriate lifting, support, or protec-
tive device to protect the ways and support
the chuck during the installation process
(refer to the
Installation & Removal Devices
section in this Manual).
Clean and lightly oil the camlock studs, then
thoroughly clean the mating surfaces of the
spindle and chuck.
Install the chuck by inserting the camlock
studs straight into the spindle cam holes.
Important:
Avoid inserting the studs by piv-
oting them in from an angle or rotating the
spindle. This can damage studs or spindle
cam holes.
