Recommended Lathe Speeds (Per Diameter Of Workpiece); Troubleshooting The Jwl-1015/1015Vs Lathes - Jet JWL-1015VS Operating Instructions And Parts Manual

13.0 Recommended Lathe Speeds
Diameter of Work
Under 2"
2" to 4"
4" to 6"
6" to 8"
8" to 10"

14.0 Troubleshooting the JWL-1015/1015VS Lathes

Table 3
Trouble
Motor fails to develop
full power
Motor or spindle stalls
or will not start
Excessive vibration
Tools tend to grab or
dig in
Tailstock moves when
applying pressure
Red LED light display
Green LED light and
Red LED light display
continuity (both are lit)
Roughing RPM
1520
760
510
380
300
Probable Cause
Power line overloaded
Undersized wires in power supply system.
Too many machines on same circuit.
Worn motor
Excessive cut
Improper belt adjustment, or worn or
broken belt
Motor brushes are worn or damaged
Worn spindle bearings
Worn motor
Workpiece warped, out of round, has
major flaw, or was improperly prepared for
turning
Worn spindle bearings
Worn drive belt
Motor mounting fasteners are loose
Lathe on uneven surface
Dull tools
Tool support set too low
Tool support set too far from work piece
Improper tool being used
Cam lock nut needs adjusting
Lathe bed and tailstock mating surfaces
are greasy or oily
Overload limiter in circuit board activated
Overheating in heat sink
Spindle locked
Motor cord disconnect
Worn motor
Circuit board burned out
(per diameter of workpiece)
General Cutting RPM
3000
1600
1080
810
650
Table 2
Remedy
Correct overload condition
Increase supply wire size.
Shut off other machines.
Replace motor
Reduce depth of cut
Adjust or replace belt as needed
Replace brushes
Replace bearings
Replace motor
Correct problem by planing or sawing
workpiece, or discard entirely and use
new workpiece
Replace spindle bearings
Replace drive belt
Tighten fasteners
Place lathe on flat surface
Keep tools sharp
Reposition tool support height
Reposition tool support closer to work
piece
Use correct tool for operation
Tighten cam lock nut
Remove tailstock and clean surfaces with
a cleaner/degreaser. Re-apply light coat
of oil to lathe bed surface.
Reduce depth of cut
Reduce depth of cut
Release index pin
Reconnect motor cord in PC board
Replace motor
Replace circuit board
Table 3
21
Finishing RPM
3000
2480
1650
1240
1000