Grizzly G0750G, Руководство пользователя

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Model G0750G (Mfd. Since 5/15)
-73-
The saddle gib is located on the bottom of the
back edge of the slide (
Figure 122). This gib is
designed differently than the cross or compound
slide gibs. Instead of being a wedge-shaped plate,
it is a flat bar. The gib pressure is applied by four
set screws. Hex nuts secure these set screws in
place, so they will not loosen during operation.
Figure 122. Saddle gib components.
Tools Needed Qty
Wrench 10mm ................................................... 1
Hex 3mm ........................................................... 1
Hex 6mm ........................................................... 1
To adjust the saddle slide gib:
1. DISCONNECT LATHE FROM POWER!
2. Clean and lubricate the lathe bedways (refer
to
Page 63).
3. If the carriage lock (Figure 87) is tight, loosen
it two turns.
4. Loosen the jam nuts on the four set screws
shown in
Figure 122, and adjust the set
screws the same amount as follows:
—To tighten the carriage gib, tighten the set
screws.
—To loosen the gib, loosen the set screws.
5. Move the carriage back and forth and repeat
adjustments as necessary until the gib pres-
sure is acceptable.
6. Hold the set screws in place and tighten the
jam nuts.
Set Screws
Gib
Half Nut Adjustment
The half-nut mechanism can be adjusted if it
becomes loose from wear. The half nut is mount-
ed in ways with a gib exerting pressure between
components to reduce sloppy movement. The
half-nut gib is a flat bar-type gib, similar to the
saddle gib, and is tensioned with three set screws.
Tools Needed Qty
Hex Wrenches 2.5, 6mm ..........................1 Each
Wrench 8mm ..................................................... 1
To adjust the half nut:
1. DISCONNECT LATHE FROM POWER!
2. Disengage the half nut and remove the
thread dial.
3. Loosen the hex nuts on the set screws shown
in
Figure 123.
4. Tighten each set screw approximately
1
⁄
8
of a
turn, then retighten the hex nuts without mov-
ing the set screws.
5. Move the carriage handwheel until the half
nut can fully close, then open/close the half
nut several times and notice how it feels. The
half nut is correctly adjusted when you feel
a slight drag while opening and closing it. It
should not feel too stiff or too loose.
6. Repeat Steps 3–5, if necessary, until you are
satisfied with the half nut adjustment, then re-
install the thread dial.
Figure 123. Half nut gib set screws.
Set
Screws
Half Nut