18
Vertical Tilting Band Saw
3. Turn the adjuster (Y, Fig. 18) to adjust the bearing. The
bearing should barely touch the blade (0.003"). This
clearance can be measured with a piece of thin paper
which should just fit into the gap between the bearing and
the blade.
4. Tighten the lock nut (X, Fig. 18).
5. Set the lower blade guide bearing in the same manner.
6. When correct guide bearing adjustment is done, the blade
runs smoothly and evenly without twisting or snagging
anywhere along its path.
Fig. 18
X
Y
11.0 BAND SAW OPERATION
Consult Section 9.0 for identification of the controls.
11.1 Blade Break-In Procedure
New blades are very sharp and therefore have a tooth
geometry that is easily damaged if a careful break-in
procedure is not followed. Consult the blade manufacturer’s
literature for break-in of specific blades on specific materials.
The following procedure will be adequate, however, for
break-in of JET-supplied blades on lower alloy ferrous
materials.
1. Use a section of round stock.
2. Operate the saw at low speed. Start the cut with a very
light feed rate.
3. When the saw has completed about 1/3 of the cut, increase
the feed rate slightly and allow the saw to complete the
cut.
4. Keep the feed rate at the same setting and begin a second
cut on the same or similar workpiece.
5. When the saw has completed about 1/3 of the cut,
increase the feed rate while watching the chip formation
until cutting is at its most efficient rate (reference Section
11.4 - “
Evaluating Cutting Efficiency
”). Allow the saw to
complete the cut.
6. The blade is now considered ready for use.
11.2 Pre-Operation Checklist
The following items should be checked at the beginning
of each shift and by each new operator. This checklist is
designed to maintain peak saw performance, increase
blade life, reduce saw repairs, and provide a safe machine
for the operator.
• Guards and covers in place and closed securely.
• Check the hydraulic fluid level - fill as necessary.
• Remove any unnecessary tools and equipment from
the work surfaces and work area.
• Inspect blade-wheels and blade guides - be sure to
remove chips. Check that the blade cleaning brush is
aligned with the blade. Replace the blade brush if worn.
• Inspect the blade - replace if worn or if missing teeth.
• Check that the proper blade is installed.
• Check the blade tension - adjust if needed.
• Visually inspect the saw for damage or leaks. REPAIR
BEFORE OPERATING.
• Check cutting fluid - add as necessary, change if
contaminated.
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