Grizzly G7945 - Manual (Page 29)

G7945/G7946 Radial Drill Press
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Figure 22. Depth stop components.
Depth Nut Jam Nut
Depth
Stop Stud
The Model G7945/G7946 has a depth stop that
allows you to drill repeated non-through holes to
the same depth every time.
Depth Stop
The depth stop consists of a stud attached to
the quill with two hex nuts that can be lowered
or raised on the stud so the lower nut (depth nut)
hits a stop bracket when the drill bit is lowered.
The upper hex nut (jam nut) is then used to tight-
en against the depth nut to secure it in place so
it doesn't move with repeated operations.
Figure
22 shows the various components of the depth
stop.
The return height nut, on the base of the stud, lim-
its the downfeed handle return distance, which is
set by how high the nut is placed on the stud. This
feature is useful for repetitive drilling motions.
Depth Stop
To set the depth stop:
1. Lower the drill bit to the required height.
2. Thread the depth nut down against the stop
bracket.
3. Lower the jam nut against the depth nut.
4. Using wrenches, hold the depth nut in place
and tighten the jam nut against the depth
nut.
Stop
Bracket
The Model G7945 table can be adjusted for
height and angle. The G7946 table adds the
adjustments of table distance from column and
rotation.
Table Adjustments
Table Height
1. Loosen the table bracket clamp bolt (Figure
23). Turn the handle crank to lift or lower the
table.
2. Remember to lock the support bracket in
place before operating the machine.
Figure 23. Table height controls (G7945).
Handle
Crank
Table Bracket
Clamp Bolt
Return
Height Nut
To set the spindle return distance:
1. Lower the drill bit.
2. Thread the return height nut up the stud to
the desired height.
Note: The scale on the depth stop can be recali-
brated if it gets moved or has changed since the
factory setting. Refer to
Calibrating Depth Stop
on Page 35 for instructions on how this is done.