Troubleshooting Hbs-56Mvs Band Saw; Operational Problems - Jet HBS-56MVS Operating Instructions And Parts Manual

10.0 Troubleshooting HBS-56MVS Band Saw

10.1 Operational problems

Symptom
Cuts not square.
Premature dulling of
blade teeth.
Rough cut.
Frequent blade
breakage.
Blade refuses to track
properly on wheels.
Possible Cause
Blade not square to vise/material.
Blade surface not perpendicular to
table.
Workpiece shifting in vise.
Low blade tension.
Blade guides out of adjustment.
Improper blade break-in.
Excessive blade speed – blade teeth
overheating.
Insufficient downfeed pressure.
Insufficient blade tension.
Improper tooth pitch for material.
Hard spots on, or work hardening of,
material
Improper blade break-in.
Improper speed or feed pressure.
Dull or damaged teeth.
Poor weld on blade.
Workpiece shifting in vise.
Improper blade selection; too few teeth
per inch or blade too thick.
Incorrect blade speed or downfeed
rate.
Improper blade tension.
Blade overstressed, pushing against
wheel flange.
Poor blade construction; cracks at
weld.
Blade contacting workpiece before
saw is started.
Guide bearing misalignment.
Improper blade tension.
Guide bearing misalignment.
Blade catching in workpiece.
Improper blade wheel alignment.
Wheel bearings/bushings worn.
Table 3
Correction
Adjust vise square to blade.
Adjust blade guides until perpendicular.
Properly secure workpiece.
Increase tension.
Adjust blade guides. Bring guides as close
as possible to workpiece.
Follow proper break-in procedure.
Decrease speed.
Increase downfeed pressure (adjust spring
tension).
Increase blade tension.
Use proper blade.
Reduce
downfeed rate.
Follow proper break-in procedure.
Adjust as needed.
Replace blade.
Replace or re-weld blade.
Properly secure workpiece.
Use blade with appropriate thickness and
tooth pitch for material.
Use proper speed and feed rates.
Tighten blade to prevent slippage on
wheels.
Adjust blade tracking.
Use properly welded blades.
Blade must be clear of workpiece when
turning on saw.
Adjust blade guides according to
instructions.
Tighten blade to prevent slippage on
wheels.
Adjust blade guides according to
instructions.
Use good quality blade of appropriate style
and tooth pitch for workpiece. Use cutting
fluid when needed.
Inspect and adjust wheel alignment.
Contact JET technical service if needed.
Inspect and replace if needed.
18
blade speed and increase