Chuck Removal; Scroll Chuck Clamping - Grizzly G0776 Owner's Manual

Chuck Removal

To remove chuck:
1.
DISCONNECT MACHINE FROM POWER!
2.
Use appropriate lifting, support, or protective
device to protect ways and support chuck
(refer to Chuck Safety & Support 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.
Cam line and spindle mark aligned
Figure 30. Camlock is fully loosened when the
cam line is aligned with the spindle mark.
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.
4. Using dead blow hammer or other soft mal-
let, lightly tap around outer circumference of
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.
— 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.
Model G0776 (Mfd. Since 7/14)
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.
Never mix jaw types
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.
Safer Inside
Jaw Use
Bar Stock
CORRECT
Unsafe Jaw Position and
Poor Scroll Gear Engagement
Safer Outside
Jaw Use
Shallow
Bar Stock
CORRECT
Safer Outside
Jaw Use
Shallow
Bar Stock
Unsafe Jaw
Position
CORRECT
Safer Inside
Jaw Use
Cylinder
Poor Scroll
CORRECT Gear Engagement
Figure 31. Jaw selection and workpiece holding.
or positions
Insufficient
Jaw Clamping
Unstable
Workpiece
INCORRECT
Poor Grip
Unstable
Workpiece
INCORRECT
Unsafe Inside
Jaw Use
Poor Scroll
Gear
Engagement
INCORRECT
Unsafe Jaw Position
INCORRECT
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