Jet GHB-1330 Operating Instructions Manual page 5

Fig 7
A....Longitudinal Travel Hand Wheel
B....Automatic feed lever
C....Half-Nut Lever (thread cutting)
D....Cross Slide Hand Wheel
E....Top Slide Hand Wheel
F....Tool post clamping lever
G....Threading dial
Fig 8
H....Tailstock Spindle Locking Lever
I.....Tailstock Locking lever
J....Tailstock Spindle Hand Wheel
K....Tailstock off-set adjustment
6.2 Chucking
Chuck removal:
Before removing the chuck from the
spindle, place board across the bed
ways under the chuck.
Support the chuck while turning three
cam locks ¼ turn counter-clockwise.
Line up the two marks (A, Fig 9) for
removal.
Fig 9
Carefully remove the chuck form the
spindle.
Clean all contact surfaces.
Lift the chuck up to the spindle nose
and press onto the spindle.
Tighten in place by turning the cam
locks ¼ turn clockwise.
The index mark (A) on the camlock
should be between the two indicator
arrows (B).
If not, adjust the cam studs by turning
them in or out by one turn as needed.
Tighten cam locks.
Attention:
Never exceed the max speed
limitation of the work holding device.
Jaw teeth and scroll must always be
fully engaged. Otherwise chuck jaws
may break and fly off in rotation (Fig
10).
Fig 10
Avoid long workpiece extensions.
Parts may bend (Fig 11) or fly off (Fig
12).
Use tailstock or rests to support.
7
Fig 11
Fig 12
Avoid short clamping contact (A, Fig
13) or clamping on a minor part
diameter (B).
Fig 13
Face locate the workpiece for added
support.
6.3 Tool setup
The cutting angle is correct when the
cutting edge is in line with the centre
axis of the work piece. Use the point
of the tailstock centre as a gauge and
shims under the tool to obtain the
correct centre height.
Use a minimum of two clamping
screws when installing the cutting tool
to the four way tool post.
Avoid big tool extensions.