Model G0844 (Mfd. Since 2/18)
-23-
Adjusting Spindle
Speeds
A
B
C
= High Range
800–3300 RPM
= Mid Range
600–2000 RPM
= Low Range
300–1000 RPM
B
C
Spindle
Motor
(Viewed from Back of Headstock)
A
Figure 19. Speed ranges for each belt position.
Your lathe has three speed ranges for maximum
turning options. These ranges are selected by
changing belt positions on the motor and spindle
pulleys (see
Figure 19).
High range (
A) is best when turning a workpiece
where a clean finish is required and only light cuts
are made. Mid range (
B) is a compromise between
high and low ranges. Low range (
C), which has
more torque, is best when turning a workpiece
where a lot of material must be removed and a
rough finish does not matter. Use the speed dial
to adjust spindle speed within each range.
Refer to the chart below to choose the appropriate
RPM for your operation. Then choose the speed
range that will include the selected RPM.
Always choose correct spindle speed for
your operation. Using wrong speed may lead
to workpiece breaking loose or being thrown
from lathe at a high rate of speed, causing
fatal or severe impact injuries.
4. Open front access cover and remove side
access cover (see
Figure 22).
Tool Needed
Phillips Head Screwdriver #2 ............................ 1
Diameter
of Work-
piece
Roughing
RPM
General
Cutting
RPM
Finishing
RPM
Under 2"
1520
3000
3000
2–4"
760
1600
2480
4–6"
510
1080
1650
6–8"
380
810
1240
8–10"
300
650
1000
10–12"
255
540
830
12–14"
220
460
710
Figure 20. Speed recommendations.
To change speeds:
1. DISCONNECT MACHINE FROM POWER!
2. Loosen
belt-tension
lock
handle
(see
Figure 21).
3. Use belt-tension lever (see Figure 21) to lift
motor assembly all the way up, then re-tight-
en belt-tension lock handle—this will hold
motor in place while you change belt position.
Figure 21. Location of belt-tension lever.
Belt-Tension
Lock Handle
Belt-Tension
Lever
Figure 22. Location of side, front access covers.
Front
Access
Cover
Opened
Side Access
Cover Removed
Summary of Contents for G0844
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