7.2 Grinding of knives (continued)
Grinding the third fixed knife
The third fixed knife is ground on the same side of the grinding fixture as the rotat-
ing knives.
Follow the instruction and use the grinding fixture and surface grinder with mag-
netic table. The grinding fixture gives the third fixed knife the
precise and correct cutting angle.
Grinding
Grind the cutting angle on the knife
Cutting angle 60°.
• Install the knife in the fixture as shown in the
illustration, with the knives rear lower edge in the
inner groove on the grinding fixture.
• Fix the knife, use the screws and the flat hardened
washers which belongs to the grinding fixture.
• Grind the cutting angle until the knife edge does
not have any irregularities.
Minimum knife dimensions
• The knife can be ground down to the dimensions
in the adjacent illustration.
After that, the knife is used up and must be
replaced by a new one.
Grind the
cutting angle
60°
Grind the cutting angle
min. 60 mm
7
Service
Ser vice l 7-21