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For Machines Mfg. Since 8/09 SB1024/SB1025/SB1026
-43-
OPERATION
Figure 37. Model SB1026 V-belt positions and speeds.
Motor
Spindle
SB1026
Low Spindle
Speed Range
80
140
220
325
SB1026
High Spindle
Speed Range
Motor
Spindle
710
1170
1860
2800
5. To re-tension the V-belt, push the
adjustment lever back with moderate force,
then re-tighten the two lock levers to secure
the motor in place.
6. Replace the two belt housing side covers
before re-connecting the mill to power.
To avoid entanglement hazards, always make
sure that the two belt housing safety covers
are firmly in place before connecting the mill
to power.
Downfeed Controls
Spindle downfeed movement on the mill
is controlled by three mechanisms: 1) The
coarse downfeed handle, 2) the fine downfeed
handwheel, and 3) the auto-downfeed system.
Using the Coarse Downfeed
Handle
1. Make sure that the spindle rotation is
turned OFF and the spindle is at a complete
stop.
2. To set the downfeed for manual control,
pull the downfeed selector knob out, then
rotate it clockwise until the selector pin
under the knob seats in the forward manual
(disengaged) position, as shown in Figure
38 and illustrated in Figure 39 on the next
page.
Note: It may be necessary to turn the spindle by
hand as you move the selector to enable the
gears to mesh.
Figure 38. Downfeed selector in the manual
(disengaged) position.
Downfeed Selector
3. Make sure the selector pin is firmly seated
in the detent by attempting to move the
selector without pulling the knob out.