Hyd-Mech S20 SERIES III, Manual

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2.6
DETERMINE OPTIMUM BLADE PITCH – TEETH PER INCH (T.P.I.)
Selecting a blade with proper tooth pitch is important in order to achieve
optimal cutting rates and good blade life. For cutting narrow or thin wall
structural materials, a fine blade with many teeth per inch (T.P.I.) is recom -
mended. For wide materials a blade with a coarse pitch should be used.
See the sketch below for the blade pitch changes for differing effective
material widths.
It is impractical to change the blade to the proper pitch every time a different
width of material is cut and it is not necessary, but remember that the opti-
mum blade will cut most efficiently. Too fine a blade must be fed slower on
wide material because the small gullets between the teeth will get packed
with chips before they get across and out of the cut. Too coarse a blade
must be fed slower because it has fewer teeth cutting and there is a limit to
the depth of a cut taken by each tooth.
OPTIONAL EQUIPMENT/CONTROLS
MIST COOLANT
Mist Coolant - the air powered pump delivers a regulated number of pulses of lubricant to a single applicator nozzle.
The unit has two control screws:
• Pulse / Minute - adjusts the rate of lubricant use. About 8 to 2 pulses per minute is optimum - more is not better.
• Air Screw - regulates the jet of air that projects the lubricant from the nozzle onto the blade. Adjustment should be
such that lubricant covers the blade without blowing the mist beyond the back edge of the blade.
Pulse/Minute Adjustment
Air screw