South Bend Tools SB1125, Owner'S Manual, Page: 28 / 56

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For Machines Mfd. Since 11/21
South Bend Tools
Model SB1125
O P E R A T I O N
To set spindle speed:
1. DISCONNECT MACHINE FROM POWER!
2. Lift belt tension lock, then use belt tension
knob to pull motor forward and release belt
tension (see Figure 32).
Figure Figure 32. Location of belt tension lock and belt . Location of belt tension lock and belt
tension knob. tension knob.
Belt Tension Belt Tension
Knob Knob
Belt Tension Belt Tension
Lock Lock
3. Open belt cover.
LOW
LOW: 50–400 RPM
Center Pulley
Motor Pulley
HIGH: 300–2000 RPM
HIGH
Center Pulley
Motor Pulley
Figure 33. Belt configuration chart. Figure 33. Belt configuration chart.
5. After belt is properly positioned on pulleys,
use belt tension knob to push motor away
from center pulley and engage belt tension.
6. Secure motor position with belt tension lock.
7. Refer to Checking V-Belts on Page 35 to
ensure belt does not need to be replaced.
8. Close belt cover.
9. Connect machine to power, turn machine
ON, and set spindle rotation direction.
10. Adjust spindle speed dial until desired RPM
is displayed on spindle speed digital readout
(see Figure 34).
Figure Figure 34. Spindle speed controls. . Spindle speed controls.
Spindle Spindle
Speed Dial Speed Dial
Spindle Spindle
Speed Speed
Digital Digital
Readout Readout
Use care when handling V-belts as they could
pinch your fingers against a pulley. They may
also get hot after extended use so wait to
handle if machine has been in use.
4. Refer to belt configuration chart shown in
Figure 33 to configure belt on pulleys for
selected speed range.
— If belt is worn or damaged, replace.
!