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2. Proceed as follows when it becomes necessary to
modify solid section sawing recommendations: (a)
Measure the thinnest stock section to be cut; (b)
Apply the corresponding percentage factor from
the following chart; (c) Use a high band speed, but
never exceed the maximum speed recommended
for stock sections of the same size.
SECTION FACTOR TO APPLY
THICKNESS TO MINIMUM CUTTING
RATES GIVEN BY JOB
SELECTOR*
Up to 3/16 inch 40%
(0 to 4.8 mm)
3/16 to 3/8 inch 50%
(4.8 to 9.5 mm)
3/8 to 5/8 inch 60%
(9.5 to 15.9 mm)
5/8 to 1 inch &over 70%
(15.9 to 25 mm & over)
*Based on 5 inch (127.0 mm) solids.
Cutting Rate to Thickness Relationship.
SAW HEAD POSITIONING and APPROACH
Head Positioning
1. Use the Saw Head Control selector to initiate
vertical saw head movement in either direction
during both manual and automatic sawing modes.
Head movement during either mode can be stopped
by moving the Saw Head Control selector to
"HOLD". Moving the selector to "UP" will enable
the saw head to be raised during either operating
mode.
2. Positioning the saw head during manual
operation: (a) Move the Saw Head Control
selector to "DOWN/AUTO" when ready to begin
cutting; (b) After a cut has been nished, the saw
head actuates the head down proximity switch
(2 PRS or 2 LS) and the band drive motor stops
with the saw head completely down; (c) Raise the
saw head to position stock by moving the Saw
Head Control selector to "UP", then pushing the
Hydraulic Start button.
3. Positioning the saw head during automatic
operation: (a) Leave the Saw Head Control
selector at the "DOWN/AUTO" setting until the
required number of stock pieces has been cut,
or until no indexable stock remains on the feed
table.
2. Use the upper portion of the slide bar scale to
provide necessary clearance at the stock's top left
corner during the saw head's raising and lowering
arc. This applies for all stock widths between 3-1/2
and 16 inches (88.9 and 406.4 mm).
Both saw guide arms must clear the loaded
stock and vise jaws as the saw head raises
and lowers. This is important when cutting
maximum height rectangle stock.
FEED FORCE ADJUSTMENTS
1. Feed force is the pressure exerted by the workpiece
against the saw band's cutting edge. It is controlled
hydraulically and regulated with the Feed Force
valve. Turn the valve clockwise to "decrease"
pressure, counterclockwise to "increase" it.
2. The following are important factors to consider when
setting or adjusting the Feed Force valve:
• Turn the Feed Force valve to a low setting if the
correct feed force is not known. The operator can
then increase or decrease pressure during operation
to obtain the best cutting rate consistent with desired
blade life and stock cut nish. Always be sure to
take a good chip.
• Never start a cut with the maximum Feed Force
valve setting. Blade damage may occur.
• Certain work-hardening materials will require a
moderately heavy initial Feed Force valve setting to
assure immediate penetration of blade teeth. Light
feeds on these materials may cause the blade to slide
over the stock resulting in saw band damage.
• Generally, top performance from a sharp saw band
results from relatively low Feed Force valve
settings. It will be necessary to increase the setting
as the saw band becomes duller. This will help keep
the cutting rate constant throughout the life of the
saw band.
• Feed force adjustments are not necessary for
changing stock cross-sections. A balancing valve
enables the saw band to maintain a uniform cutting
rate.
Reducing Cutting Rate & Band Speed for Pipe, Tubing
and Structurals
1. Increasing loading per tooth occurs when sawing
thin stock sections. Although the blade teeth can
bear some overloading, a cutting rate reduction
must be made.
FEED FORCE ADJUSTMENTS (Continued....)
LEFT SAW GUIDE ARM ADJUSTMENTS
(Continued....)
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