-24-
Model W1856 (For Machines Mfd. Since 02/19)
O
PE
R
ATIO
NS
Adjusting.Spindle.Speeds
Your lathe has three speed ranges for maximum turning
options. These ranges are selected by changing belt
positions on the motor and spindle pulleys, which
are accessed through the rear and side covers on the
headstock.
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.
A
= High Range
1400–3500 RPM
B
= Mid Range
960–2400 RPM
C
= Low Range
450–1100 RPM
B
A
Spindle
Motor
(Viewed from Back of Headstock)
C
Figure.19.
Speed ranges for each belt
position.
Work-
piece..
Dia.
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.
Spindle speed
recommendations.
Refer to
Figure.19
for belt positions and speed ranges.
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 spindle speed recommendation chart (see
Figure
20
) to choose the appropriate RPM for your
operation, then choose the speed range that will include
the selected RPM.
