Grizzly G0750G User Manual

-32-
Model G0750G (Mfg. Since 11/12)
This 3-jaw scroll-type chuck has an internal scroll-
gear
that moves all jaws in unison when a
djusted
with the chuck key
. This chuck holds
cylindrical
parts on-center with the axis of spindle rotation
and can be
rotated
at high speeds if the workpiece
is properly clamped and balanced.
Never mix jaw types or
positions to
accommodate an odd-shaped workpiece.
T
he
chuck will spin out of balance an
d
may throw the
workpiece
!
Instead, use an independent jaw chuck
or a faceplate.
Scroll Chuck
Clamping
Insufficient
Jaw Clamping
Unstable
Workpiece
Bar Stock
Cylinder
Unsafe Jaw Position
Poor Scroll
Gear Engagement
Safer Inside
Jaw Use
Unsafe Inside
Jaw Use
Unsafe Jaw
Position
Safer Outside
Jaw Use
Poor Scroll Gear Engagement
Unsafe Jaw Position and
Poor Scroll
Gear
Engagement
Poor Grip
Unstable
Workpiece
Shallow
Bar Stock
Shallow
Bar Stock
Safer Outside
Jaw Use
Safer Inside
Jaw Use
CORRECT
CORRECT
CORRECT
CORRECT
INCORRECT
INCORRECT
INCORRECT
INCORRECT
Figure 33. Jaw selection and workpiece holding.
Chuck Jaw Reversal
This chuck has 2-piece jaws that consist of
a top jaw and a master jaw. The top jaw can
be removed, rotated 180°, and re-installed in
the reverse position for additional work-holding
options. When reversing the top jaws, always
keep them matched with their original master jaw
to ensure the best fit.
To reverse 2-piece jaws:
1.
DISCONNECT MACHINE FROM POWER!
2.
Remove the cap screws that secure the top
jaw to the master (bottom) jaw.
3
. Remove the top jaw, rotate it 180°, then re-
install it with the longest cap screw in the tall-
est portion of the jaw.
4
. Repeat Steps 2–3 with each remaining jaw
(we recommend only reversing one jaw at a
time to keep all original parts together).
Master Jaw
Rotate Top
Jaw 180º
Long Cap ScrewShort Cap Screw
Figure 34. Reversing the chuck jaws.

Grizzly G0750G Specifications

General

Brand	Grizzly
Model	G0750G
Category	Lathe
Language	English