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Figure 17: Bed Knife Specifications
6-8 Specifications for Re-sharpening Rotor Knives
All the rotor knives must be re-sharpened in sets. Each knife within
a set must have a tolerance within 0.003” (0.05 mm) for the total
height, heel to cutting edge. Greater variations within a set will
result in improper knife gap settings and other operational
problems. See Figure 18 for rotor knife specifications.
Knives below the minimum dimension specified must not be used.
Using knives below the specified minimum can cause interference
resulting in serious damage to the rotor and cutting chamber.
When using a surface grinder to re-sharpen the rotor or bed knives,
it is not harmful to allow a few small nicks to remain on the cutting
edge. Grinding the knife so that the cutting edge is free from all
nicks can be wasteful.
Figure 18: Rotor Knife Specifications
Grind these surfaces only
20
°
0.158”
(4 MM)
0.158”
(4 MM)
Minimum Length (X)
New Knife Length (Y)
Model X Y
BP1012
2.433” 2.748”
61.8 mm 69.8 mm
BP1018
2.402” 2.717”
61.0 mm 69.0 mm
.382” ± .003
(9.5 mm ± .05)
30°
Minimum Length 2.305” (58.5 mm)
New Knife Length 2.480” (63 mm)
20°
.063”
(1.6 mm)