-20-
Model G0925 (Mfd. Since 02/20)
The Model G0925 has five spindle speeds that
operate between 740-3140 RPM. Refer to the
speed chart located under the belt cover.
Changing
Spindle Speed
The highest speed is obtained when the belt is
positioned on the smallest spindle pulley sheave
(E) and the largest motor pulley sheave (5), as
shown in
Figure 17.
A-1: 740 RPM
B-2: 1100 RPM
C-3: 1530 RPM
D-4: 2100 RPM
E-5: 3140 RPM
5
4
3
2
1
Motor Pulley
Spindle Pulley
E
D
C
B
A
Belt
Figure 17. Spindle speed chart.
1. DISCONNECT MACHINE FROM POWER!
2. Open belt cover.
3. Determine correct spindle speed for operation
(see
Choosing Spindle Speeds on Page 19).
4. Turn belt tension knob counterclockwise to
loosen motor tension spring (see
Figure 18).
To change spindle speed:
Figure 18. Belt tension knob location.
Belt Tension
Knob
5. Pull motor toward front of drill press. This will
take tension off V-belt.
Note: If V-belt is tight, have an assistant pull
motor while you change drill speeds.
Use care when changing V-belts as they
could pinch your fingers. They may also
get hot after extended use so wait to
change speeds if drill has been in use.
6. Move V-belt onto desired sheave on motor
and spindle pulleys (see
Figure 19).
Figure 19. V-belt components.
Spindle Pulley
Motor Pulley
V-Belt
7. Push motor away from drill press to increase
belt tension and tighten belt tension knob to
secure.
Note: Belt should be tight enough to prevent
slippage. Correct tension is set if belt flexes
1
⁄
4
" when thumb pressure is applied at mid-
point of belt between pulleys (see
Figure 20).
Pulley
Deflection
Pulley
¼"
Figure 20. Checking belt tension.
— If drive belt is cracked, torn, excessively
worn, or damaged, replace it.
Summary of Contents for G0925
Page 44: ......
