4. Material too coarse
5. Incorrect blade tension
6.Teeth in contact with material
before saw is started
7. Blade rubs on wheel flange
8. Miss-aligned guide bearings
9. Blade too thick
10 Cracking at weld
4. Use a blade of slow speed and
small teeth spacing
5. Adjust to where blade just
does not slip on wheel
6. Place blade in contact with
work after motor is starred
7. Adjust wheel alignment
8. Adjust guide bearings
9. Use thinner blade
10. Weld again,
beware the
welding skill.
Premature Blade Dulling 1. Teeth too coarse
2. Too much speed
3. Inadequate feed pressure
4.Hard spots or scale on material
5. Work hardening of material.
6.Blade twist
7. Insufficient blade
8. Blade slide
1. Use finer teeth
2. Decrease speed
3. Decrease spring tension on
side of saw
4. Reduce speed, increase feed
pressure
5. Increase feed pressure by
reducing spring tension
6. Replace with a new blade, and
adjust blade tension
7. Tighten blade tension
adjustable knob
8. Tighten blade tension
Unusual Wear on
Side/Back of Blade
1.Blade guides worn.
2.Blade guide bearings not adjust
properly
3.Blade guide bearing bracket is loose
1.Replace.
2.Adjust as per operators manual
3.Tighten.
Teeth Ripping from
Blade.
1. Tooth too coarse for work
2. Too heavy pressure; too slow
speed.
3. Vibrating work-piece.
4. Gullets loading
1. Use finer tooth blade.
2. Decrease pressure, increase
speed
3. Clamp work piece securely
4. Use coarser tooth blade or brush
to remove chips.
Motor running too hot
1. Blade tension too high.
2. Drive belt tension too high.
3. Blade is too coarse for work
1. Reduce tension on blade.
2. Reduce tension on drive belt.
3. Use finer blade.
20
Summary of Contents for 250S
Page 1: ...METAL CUTTING BAND SAW MACHINE MODEL 250S INSTRUCTION MANUAL 250S 060505 R2...
Page 24: ...12 CIRCUIT DIAGRAM 22...
Page 25: ...OP 23...
Page 26: ...24...
Page 27: ...25...
Page 28: ...26...
Page 29: ...27...
Page 30: ...28...
Page 31: ...29...
Page 32: ...30...
