Sterling BP1018, BP1012 6-8Specifications for Re-sharpeningRotor Knives, Bed Knife Specifications

Figure 17: Bed Knife Specifications

Model	X	Y	Grind these surfaces only
BP1012	2.433”	2.748”		20°
	61.8 mm	69.8 mm
BP1018	2.402”	2.717”
	61.0 mm	69.0 mm
		0.158”	Minimum Length (X)	0.158”
		(4 MM)	New Knife Length (Y)	(4 MM)

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

30°

.382” ± .003

(9.5 mm ± .05)

Minimum Length 2.305” (58.5 mm)

New Knife Length 2.480” (63 mm)

20°

.063” (1.6 mm)

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