Metalworking Shear Blades Regrind
Specifications
Regrinding When sharpening shear blades, they
must be reground to the same precision tolerances as new knives to
maintain a high level of productivity and ensure quality cuts.
Recommended regrind tolerances are as
follows:
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
should exist.
Grinding
Limits
Most
four-edged shear blades are designed to allow for regrinding both
the width and the thickness of the knives.
However, there is a
limit to how much material can be removed from the blades before
they should be replaced. Below are some minimum grinding limits
recommended by the OEMs.
Initial knife clearance is adjusted by
moving the shear table in and out and/or with shims.
If the knife
width is less than the reference minimum (W), the knives may not
cross full length.
If the knife thickness is less than the
reference thickness (T), proper knife clearance may not be
possible.
Please call
us, toll-free, at 1-(800)-23-KNIFE, or 1-(800)-235-6433, to speak with our friendly sales staff for more information. We can offer you pricing on our precision resharpening sevices or high quality
replacement shear blades.
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