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G0668 20" Vertical Metal-Cutting Bandsaw
Blade Pitch (TPI)
The chart below is a basic starting point for
choosing teeth per inch (TPI) for variable tooth
pitch blades and standard raker set bi-metal
blades/HSS blades. However, for exact specifica
-
tions of bandsaw blades that are correct for your
operation, contact the blade manufacturer.
To select the correct blade pitch:
1. Measure the material thickness. This mea-
surement is the length of cut taken from
where the tooth enters the workpiece, sweeps
through, and exits the workpiece.
2. Refer to the "Material Width/Diameter" row of
the blade selection chart in
Figure 15, and
read across to find the workpiece thickness
you need to cut.
Material Width/Diameter
Material Shapes
Teeth Per Inch (TPI) for Variable Pitch Blades
Figure 15. General guidelines for blade selection and speed chart.
3. Refer to the "Material Shapes" row and find
the shape of the material to be cut.
4. In the applicable row, read across to the right
and find the box where the row and column
intersect. Listed in the box is the minimum
TPI recommended for the variable tooth pitch
blades.
5. The "Cutting Speed Rate Recommendation"
section of the chart offers guidelines for vari
-
ous metals, given in feet per minute (FPM).
Choose the speed closest to the number
shown in the chart.