Band Saws - Dalhousie University

Band Saws - Dalhousie University
Facilities Management
Band Saws
Safe Work Instructions
Service: Trade Services
Policy Sponsor:
Assistant Vice President
Facilities Management
Approval Date:
Responsible Unit:
Facilities Management
Revisions:
June 2010
Shop: Carpentry
Hazards Identified:
Flying objects, dust, moving blade and other parts, noise, cluttered floor / work area,
slippery conditions,
Personal Protective Equipment Required:
Safety footwear, safety goggles or glasses, face shield, respiratory protection, ear
protection
Training Required:
Proper Operation of Band Saws
PPE Training
These safe work practices must be followed at all times and are to be reviewed
annually.
1. Only properly trained, competent, employees are allowed to operate this
equipment.
2. DO NOT use this equipment for any purposes other than those intended by the
manufacturer.
3. Always follow the manufacturer’s instructions for use and maintenance.
4. Required PPE must be worn at all times during the operation of this equipment.
5. Do not wear gloves, loose clothing, jewelry, or, have long hair loose when
operating this equipment.
6. Check stock to be used for knots, or in the case of used material for other
foreign objects.
7. Ensure that the work area around the band saw neat, clean and fre of debris or
anything that could create a slippery floor surface.
8. Ensure that all guards are in place, secured, and working properly.
9. Ensure that the dust collection system is used while working.
10. Ensure that you have the proper blade size and type for the work to be
performed.
11. Ensure the upper blade guard is adjusted to 1/8 inch above the material to be
cut.
12. Ensure that blade tension tracking, blade guides and blade support bearings are
properly adjusted.
13. Keep hands away from the blade. USE A PUSH STICK to clear things from
around the blade.
14. Avoid awkward hand positions and / or actions.
15. Ensure that the material you are cutting is held firmly against the table.
16. Ensure that you have a firm grip on the material and feed it into the blade at a
moderate pace.
17. Never start the saw with the blade against the material to be cut.
18. Always turn the saw OFF to back the blade out of a jammed or incomplete cut.
19. Make “relief” cuts in the material before you make cuts that are long curves.
20. Never reach under the table when the saw is running.
21. Never leave a running saw unattended.
22. Turn the saw off and wait for the blade to stop completely before backing the
saw out of a cut, cleaning around the blade, changing the angle of the table or
securing materials.
23. Ensure that all band wheels are enclosed.
Band Saw Trouble Chart
Probable Cause
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Incorrect blade
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Worn or chipped pressure block
(back-up guide)
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Blade rubbing on wheel flanges
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Side guides too tight
Band tension too high
Excessive feed
Incorrect cutting fluid
Wheel diameter too small for blade
being used
Teeth in contact with work before
starting saw
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Blade teeth inverted (backwards)
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Improper cutting fluid or mixture
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Teeth dull
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Guides worn or loose
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Over feed
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Improper or lack of cutting fluid
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Incorrect feed and/or speed
Improper break-in period
Hard spots in material (like scale)
Material work hardened (check for
hardness and adjust feed)
Speed and feed too high
Over or under feed
Improper pitch blade
Cutting fluid not applied evenly
Incorrect blade (too many teeth per
inch)
Lack of band tension
Tooth set damage
Loose guide arms or set too far from
work
Wrong coolant
Excessive speed or pressure
Incorrect blade (wrong pitch)
Incorrect blade (wrong pitch)
Saw guides not adjusted properly
Solution
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Teeth too coarse. Check your cutting chart *
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Install blade correctly
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Check material for actual hardness - hard spots like
scale or flame cut surfaces
Reduce band tension. See Machine Operator's Manual
Reduce feed pressure
Check your coolant *
Use thinner blade and lower speed
Check pressure block. Replace if worn
Adjust wheel alignment
Allow 1/2" clearance before starting cut
See Machine Operator's Manual
Reduce feeds and speeds during break-in period in
accordance with manufacturers' recommendations
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Increase feed pressure
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Use new blade
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Check your cutting chart *
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Check your coolant *
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Check your cutting chart *
Check your coolant *
Check your cutting chart *
Check your cutting chart *
Check your cutting chart *
Adjust coolant nozzles
Check your cutting chart *
Tighten or replace guides
Check Operator's Manual for correct tension
Check material hardness
Adjust arm as close to work as possible - tighten and
align. Check guide
Check your coolant *
Reduce speed or pressure. Check your cutting chart *
Check your coolant *
Check your cutting chart *
Adjust or replace saw guides
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Indexing out of sequence
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Check for correct indexing sequence (head rise)
Material loose in vise
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Feed pressure too high
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Reduce feed pressure and/or speed. See your cutting
chart *
Never enter same (old blade), cut with new blade
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Blade teeth running backwards
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Insufficient blade tension
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See Machine Operator's Manual for correct band
tension
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Guide arms too far apart, cocked,
worn or loose
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Tooth lodged in cut
No cutting fluid or incorrect coolant
Hard spots, scale, inclusions, etc.
Incorrect blade (wrong pitch)
Work spinning in vise; loose "nest"
or bundles
Incorrect blade (back too soft)
Incorrect feed (excessive)
Back-up guide frozen in position,
damaged, or worn off
Blade rubbing on wheel flanges
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Check hydraulic pressure
Check your coolant *
Check hardness. Descale and/or anneal if necessary
Check your cutting chart *
Check hydraulic pressure; be sure work is firmly held
Reverse blade teeth, turn inside out
If using hard back blade, switch to a variable tooth
Reduce feed pressure. See your cutting chart *
Free pressure block and realign; if worn, replace
(never regrind)
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Move arms close to work as possible
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Replace with proper blade
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Set guide arm properly - close to work as possible
Adjust wheel alignment
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Dull or damaged blade
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Saw guide inserts or roller are riding
on teeth
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Check table and Operator's manual for correct blade
width
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Insufficient blade tension
Check for correct blade tension
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Hard spots
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Band binding in cut

Check table and Operator's manual for correct blade
width
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Check for correct blade tension
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Incorrect blade
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Check your cutting chart *
Incorrect feed and/or speed
Lack of band support
Insufficient band tension
Incorrect pitch blade
Incorrect blade (width of blade
incorrect)
Back-up guide worn
Side guides adjusted too tight
Work not held firmly
Incorrect (or lack of) cutting fluid
Incorrect feed or speed
Improper (or lack of) cutting fluid
Check your cutting chart *. Adjust until noise
disappears
Check Operator's Manual for correct tensions
Check your cutting chart *
Check your cutting chart *
Check material hardness
Replace back-up guide
Check your cutting chart *
Check your coolant *
Check your cutting chart *
Check your coolant *
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Material loose in vise
Incorrect blade (wrong pitch)
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Check hydraulic pressure
Check your cutting chart *
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