Grizzly G7947 - Manual (Page 32)

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G7947/G7948 12 Speed Floor Drill Press
Figure 29. Depth stop components.
Depth Nut Jam Nut
Depth
Stop Stud
The Model G7947/G7948 has a depth stop that
allows you to drill repeated non-through holes to
the same depth every time.
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
tighten against the depth nut to secure it in place
so it doesn't move with repeated operations.
Figure 29 shows the various components of the
depth stop.
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.
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 38 for instructions on how this is done.
Stop
Bracket
The table can raised/lowered, rotated, and tilted
90° left or right. Table adjustment controls are
shown in
Figure 30.
Adjusting Table
Figure 30. Table adjustment controls.
Support Bracket
Lock Knob
Location Pin Nut
Table Height
Crank
Table Rotation
Lock Knob
Table Height
1. Loosen the support bracket lock knob.
2. Adjust the height.
3. Lock the support bracket lock knob.
Table Rotation
1. Loosen the table rotation lock knob.
2. Rotate the table as necessary.
3. Lock the table rotation lock knob.
Table Tilt
1. Tighten the location pin nut to draw the loca-
tion pin out of the hole. Note: The location
pin is friction fit in the hole to lock the table at
0°. When reinstalling, set the table to 0°, back
the nut off, and tap the pin back in the hole.
2. Loosen the lock bolt and tilt the table to the
desired angle (make sure table rotation lock
knob is locked, so the table won't fall out).
3. Tighten the lock nut bolt.
Lock Bolt