Pressure Roller | |
Height |
|
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.
Roller Mount
Bracket
Jam Nut
Lower Adjustment Bolts
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).
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.
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.
Figure 34. Gauge block touching bottom of
sanding drum.
G0459 12" Drum Sander |