-34-
For Machines Mfd. Since 12/21
South Bend Tools
Model SB1102
S E R V I C E
Adjusting Pressure
Rollers
Proper pressure on the workpiece helps avoid
kickback and keeps the workpiece from slipping.
However, as pressure increases on the workpiece,
snipe also increases (snipe is normal with all
brands of drum sanders).
If snipe becomes a problem, you can minimize
it by a combination of reducing pressure and/
or adjusting pressure roller height. However,
you can only minimize it 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 or decreased
pressure too much for them to function as
intended—the pressure rollers MUST properly
adjusted to prevent injury.
adjusting pressure rollers
Figure 43. Location of pressure roller
Figure 43. Location of pressure roller
tensioners.
tensioners.
Jam Nut
Jam Nut
(1 of 4)
(1 of 4)
Pressure Roller Tension
Pressure Roller Tension
Hex Bolt (1 of 4)
Hex Bolt (1 of 4)
!
1.
DISCONNECT MACHINE FROM POWER!
2.
Open dust hood.
3.
Loosen jam nuts on hex bolts (see
Figure 43).
To adjust pressure roller tension:
Item Needed:
Qty
Open-End Wrench 10mm .....................................1
Adjusting Pressure Roller Tension
4.
Tighten hex bolts to increase pressure roller
spring tension; loosen hex bolts to decrease
pressure roller spring tension.
5.
Tighten jam nuts.
Note:
Increasing pressure roller tension will
increase workpiece pressure on the conveyor
belt. Increasing this pressure could increase
the likelihood of jams and make the sanding
process less forgiving of irregularities in the
workpiece. Experiment to determine optimal
tension for your workpieces.
6.
Close and latch dust hood and reconnect
dust-collection hoses.
Items Needed:
Qty
Gauge Block (2" x 4" x 24") ...................................1
Open-End Wrench 10mm .....................................1
To provide increased operator control, the Model
SB1102 features height adjustment controls for
the pressure rollers. These controls are located
on the underside of the roller pressure spring
controls and consist of a hex bolt and jam nut
setup, exactly like the roller pressure spring
tension controls.
Adjusting Pressure Roller Height
Before adjusting pressure roller height, first
make sure that the drum heights are correctly
adjusted (see Adjusting Drum Height on
Page 33) and properly aligned (see Aligning
Drums on Page 31)
Note:
Adjusting pressure roller height will affect
the pressure roller tension. Verify that pressure
rollers are properly tensioned after adjusting
pressure roller height.
