Filter
Top Products
G9744Z Metal Cutting Bandsaw
-23-
Blade Selection
Material Width/Diameter
Material Shapes
Teeth Per Inch Variable Pitch Blades
Figure 19. Model G9744Z blade selection and speed chart.
The Model G9744Z uses 129
3
⁄8" x 1" bandsaw
blades.
Selecting the right blade for the job depends on
a variety of factors, such as the type of material
being cut, hardness of the material, material shape
machine capability, and operator technique.
The chart below is a basic starting point for choos-
i
ng blade type based on teeth per inch (TPI) for
variable tooth pitch blades and for standard raker
type bi-metal blades/HSS blades. However, fo
r
exact specifications of bandsaw blades, contact
the blade manufacturer.
T
o select the correct blade TPI:
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 19 and
read
across to find your workpiece thickness
you need to cut.
3. Refer
to the "Material Shapes" row and find
the shape and 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 charts offers guidelines for var-
ious
metals, given in feet per minute (speed
FPM) and meters per minute in parenthesis.
Choose the speed closest to the number
shown in the chart.