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Shear blades must be reground to
the same exact tolerances as new blades to ensure quality cuts and
maintain a high level of productivity. The recommended
tolerances are as follows ...
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 | WIDTH - Parallel to
within .005" from end to end |
| THICKNESS -
Parallel to within .003" from end to end |
| No variation
greater than .001" within any 12" length |
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GRINDING
LIMITS
Most four edge shear
blades are designed to allow for regrinding both the thickness and
width of the blades. However, there are practical limits to
the amount of material that can be removed before the blade should
be replaced. The following chart can be used as a guide in
determining whether your blades are nearing the minimum grinding
limits ...
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Original
Size |
"T"
Minimum
Thickness |
"W"
Minimum
Width |
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| 1"
x 3" |
7/8" |
2
3/4" |
| 1"
x 4" |
7/8" |
3
3/4" |
| 1
1/8" x 5" |
1" |
4
3/4" |
| 1
1/2" x 5 1/2" |
1
1/8" |
5
3/8" |
| 1
3/4" x 6 1/2" |
1
5/8" |
6
1/8" |
Initial Blade clearance is
adjusted by moving the shear table in and out. If blade
thickness is less than reference minimum
"T",
proper blade clearance may not be possible. If width is
reduced less than the reference minimum
"W", the
blade may not cross full length.
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