Model G0887 (Mfd. Since 01/19)
-29-
Measured by the blade circumference, blade
lengths are usually unique to the bandsaw model
and the distance between the wheels.
Model
Blade Length Range
G0887 ............................................ 231
1
⁄
2
"–232
1
⁄
4
"
Standard (or Raker)
Variable Pitch (VP)
Figure 22. Bandsaw blade tooth types.
Tooth Type
The most common tooth types are described as
follows, and illustrated in
Figure 22.
Blade Length
Blade Width
Measured from the back of the blade to the tip of
the blade tooth (the widest point).
Model
Blade Width
G0887 ............................................................ 1
1
⁄
2
"
Standard or Raker: Equally spaced teeth set
at "0" rake angle. Recommended for all purpose
use.
Variable Pitch (VP): Varying gullet depth and
tooth spacing, "0" rake angle, excellent chip
removing capacity, and smooth cutting.
Blade Pitch (TPI)
The chart below is a basic starting point for
choosing teeth per inch (TPI) for variable pitch
blades and standard raker set bi-metal blades/
HSS blades. However, for exact specifications of
bandsaw blades that are correct for your opera-
tion, contact the blade manufacturer.
To select correct blade pitch:
1. Measure material thickness. This measure-
ment is distance from where each tooth
enters workpiece to where it exits workpiece.
2. Refer to "Material Width/Diameter" row of
blade selection chart in
Figure 23, and read
across to find workpiece thickness you need
to cut.
3. Refer to "Material Shapes" row and find
shape of material to be cut.
4. In applicable row, read across to right and
find box where row and column intersect.
Listed in the box is minimum TPI recom-
mended for variable tooth pitch blades.
The TPI range is represented by a "/" between
numbers. For example, 3/4 TPI is the same
as 3–4 TPI.
The "Cutting Speed Rate Recommendation"
chart, which is located on the machine just
below the Blade Pitch Chart, offers guidelines
for various metals, given in feet per minute
(FPM). Refer to
Blade Speed Chart section
on
Page 32 for further details.
TOOTH SELECTION
50
2
3
4 5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
2½
3½
75
100
150
200
250
300
350
400
2/3
2/3
2/3
1.4/2.5
1.4/2.5
1.5/.8
1.5/.8
3/4
3/4
3/4
4/6
4/6
5/8
450
mm
inch
Material Width/Diameter
Material Shapes
Teeth Per Inch (TPI) for Bandsaw Blades
Figure 23. General guidelines for blade selection and speed chart.
Summary of Contents for G0887
Page 108: ......
