RESHARPENING CUTTING HEADS
URSCHALLOY cutting heads may be
returned to the factory for resharpening, pro-
vided a certain amount of increased cutting
clearance is acceptable. With each grinding,
inside diameter is enlarged approximately
.005" (.127 mm). Heads can be sharpened
until amount of oversize reaches unaccept-
able limit; generally .030" (.762 mm). When
Urschalloy cutting heads are no longer
usable, they may be returned to the factory
for rebate. Cutting heads being returned for
sharpening or rebate should be clean and
free from foreign material. See page 49 for
ordering and returning parts information.
FABRICATED cutting heads with open-
ings between the horizontal separators of
0.150" to 1.500" (3.81 to 38.10 mm) may be
resharpened by filing. Cutting heads with
openings down to 0.100" (2.54 mm) should
be returned to the factory for resharpening;
openings below 0.100" (2.54 mm) cannot be
resharpened.
38
MAINTENANCE
Cutting Heads
File File Size Fabricated
Length (approximate) Cutting Head
4" 5/32" square K style, 0.150" & larger
J style, 0.150" — 0.240"
6" 1/4" square J style, 0.240" and up
8" 25/32 x 9/64" J style, 1.500"
flat
Figure 22 — Sharpening fabricated cutting heads.
(1) File, (2) Land, (3) Deburr in counterclockwise
direction inside cutting head using emery cloth
1/32" MIN.
45°
2
1
3
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