Grizzly G0459 - Manual (Page 33)

G0459 12" Drum Sander
-31-
However, you can only minimize snipe so much
before the workpiece will slip or kick out, causing
a hazard to the operator. If this happens, you have
raised the pressure rollers too high for them to
function as intended—the pressure rollers MUST
be lowered to prevent injury.
Tools Needed: Qty
Wrenches/Sockets 10mm ................................. 1
Gauge Blocks (see
Page 26) ............................ 2
Factory Setting:
Distance Below Sanding Drum ..... 0.080" (2mm)
The pressure rollers are factory set at 0.080"
(2mm) below the bottom of the sanding drum
and are fully adjustable either up/down with the
four lower adjustment bolts (
Figure 33). After
the adjustment has been made, always lock the
jam nuts against the bottom to prevent them from
moving.
Pressure Roller
Height
Figure 33. Pressure roller adjustment hex nuts.
Proper pressure on the workpiece helps avoid
kickback and keeps the workpiece from slip-
ping. However, as pressure increases on the
workpiece, snipe also increases (some degree of
snipe is normal with all drum sanders).
If snipe becomes a problem, you can minimize it
by reducing pressure. To lower pressure, turn the
lower adjustment bolts counterclockwise to raise
the pressure roller height. To increase pressure,
turn the lower adjustment bolts clockwise (lower-
ing pressure rollers).
Figure 34. Gauge block touching bottom of
sanding drum.
Lower Adjustment Bolts
Jam Nut
Roller Mount
Bracket
Raising the pressure rollers too high to min-
imize snipe will cause the workpiece to slip
or kick out, causing a hazard to the opera-
tor. You MUST lower the pressure rollers to
prevent injury!
These instructions will restore the pressure rollers
to the factory setting.
To adjust the pressure rollers to the factory
setting:
1. DISCONNECT POWER TO THE SANDER!
2. Open the top cover.
3. Place the gauge blocks on the conveyor table
and position them under all the pressure roll-
ers (
Figure 30).
4. Raise the table so the gauge blocks touch
the bottom of the sanding drum, as shown in
Figure 34.