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Wood Lathe Operation
Symptom
Possible Cause
Bad surface finish.
1. dull tooling or wrong tool used for task.
2. tool height not
centerline.
3. Spindle speed wrong.
4. Excessive vibration.
Excessive vibration
1. Workpiece mounted incorrectly.
upon startup
(when workpiece is
2. Workpiece warped, out of round, or flawed.
installed).
3. Spindle speed too fast for workpiece.
4. Workpiece hitting stationary object.
5. tailstock or tool rest not securely clamped
to lathe bed.
6. Quill locking nut not tightened against
tailstock.
7. lathe resting on an uneven surface.
8. Motor mount bolts are loose.
9. Belt worn or damaged.
10. Spindle bearings worn or damaged.
Chisel grabs or digs
1. Wrong chisel/tool being used.
into workpiece.
2. Chisel/tool too dull.
3. tool rest height not set correctly.
4. tool rest set too far from workpiece.
tailstock moves
1. tailstock lock bolt(s) loose.
under load.
2. Bed or clamping surface excessively oily or
greasy.
Spindle lacks
1. Belt slipping.
turning power or
2. pulleys loose.
starts up slowly.
3. Workpiece too heavy for spindle.
Quill does not move
1. Quill locking nut tightened against tailstock.
when handwhell is
turned.
Model G0842 (Mfd. Since 04/18)
⁄
" above spindle
1
8
Possible Solution
1. Sharpen tooling, select correct tool for operation.
2. adjust tool rest so tool is
centerline.
3. adjust for appropriate spindle speed (Page 33).
4. troubleshoot possible causes/solutions in this table.
1. remount workpiece, making sure that centers are
embedded in true center of workpiece.
2. Cut workpiece to correct, or use a different
workpiece.
3. reduce spindle speed (Page 33).
4. Stop lathe and fix interference problem.
5. Check clamp bolts and tighten if necessary (Pages
27–29).
6. tighten quill locking nut against tailstock (Page 27).
7. adjust feet to eliminate wobbles.
8. tighten motor mount bolts.
9. replace belt (Page 44).
10. test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
1. use correct chisel/tool.
2. Sharpen or replace chisel/tool.
3. Correct tool rest height (Page 28).
4. Move tool rest closer to workpiece.
1. tighten tailstock lock bolt(s).
2. Clean bed or clamping surface to remove excess
oil/grease.
1. tighten/adjust belt (Page 44).
2. tighten pulley set screw; re-align/replace shaft,
pulley set screw, and key.
3. remove excess material before remounting; use
lighter workpiece.
1. loosen quill locking nut (Page 27).
⁄
" above spindle
1
8
-43-
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