Grizzly 60773 User Manual
-30-
Model G0773 (Mfd. Since 12/14)
Chuck Removal
To remove chuck:
1. DISCONNECT LATHE FROM POWER!
2. Use appropriate lifting, support, or protective
device to protect ways and support chuck
(refer to
(refer to
Installation & Removal Devices
section for more details).
3. Loosen camlocks by turning key counter-
clockwise until each cam line is aligned with
its corresponding spindle mark, as shown
below.
its corresponding spindle mark, as shown
below.
Scroll Chuck
Clamping
This 3-jaw, scroll-type chuck has an internal scroll-
gear that moves all jaws in unison when adjusted
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.
gear that moves all jaws in unison when adjusted
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. The
chuck will spin out of balance and may throw the
workpiece! Instead, use an independent jaw chuck
or a faceplate.
chuck will spin out of balance and may throw the
workpiece! Instead, use an independent jaw chuck
or a faceplate.
Insufficient
Jaw Clamping
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
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 27. Jaw selection and workpiece holding.
Figure 26. Camlock is fully loosened when the
cam line is aligned with the spindle mark.
Cam line and spindle mark aligned
Tip:
Camlocks can become very tight. A
cheater pipe may be used as a last resort to
add leverage when loosening. After loosen-
ing, you may need to wiggle the chuck key in
the camlock to fully disengage the stud.
add leverage when loosening. After loosen-
ing, you may need to wiggle the chuck key in
the camlock to fully disengage the stud.
4. Using dead blow hammer or other soft mal-
let, lightly tap around outer circumference of
chuck body to loosen it from spindle.
chuck body to loosen it from spindle.
5. Remove chuck from spindle, using light rock-
ing motion to carefully slide studs out of cam
holes.
holes.
— If chuck does not immediately come off,
rotate it approximately 60° and tap it again.
Make sure all marks on cams and spindle
are properly aligned for removal.
Make sure all marks on cams and spindle
are properly aligned for removal.