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BJ5-615 Chapter 5: Maintenance 47 of 85
Mounting the Cutters
1. Clean the cutter supporting surface and the hole on the cutter holder.
2. Insert sharp cutter or turn old cutter, and push against the cutter holder surface.
3. Put in the cutter mounting screw (DIN912 – M12x40 – 12.9) and the washer
(DIN433 – 13 – 300HV).
4. Screw in the mounting screws and tighten lightly first.
5. Make sure the cutter fits planar in the seat.
6. Tighten the cutter mounting screws using a torque wrench.
NOTE: The required torque for all cutter mounting screws is 120 Nm (also see
the table under “Working on Cutting Cutters”).
7. Check if the cutting gap is correct and make sure the cutters do not collide
as the rotor turns.
8. Remove tools and other objects from the cutting chamber.
9. Put back screen and fix it.
10. Switch on the shredder for a short time without material, and listen for noises. If
there are unusual noises, determine the cause and eliminate it.
NOTE: The cutting knives, in particular the cutters, should only be sharpened
or replaced in sets. There is a danger of balance error if a combination
of rotor cutters from different cutter sets is used.
Cutters are reversible and have four symmetrical cutting edges. This
makes it possible to turn the cutters and only to sharpen after every
fourth cutter change.
Mounting the Bed Cutters
1. Clean the cutter supporting surface and the holes on the cutter holder
2. Insert sharp cutter or turn old cutter.
3. Put in the cutter adjusting screws and adjust them roughly
4. Put in the cutter mounting screws (DIN912 – M12x55 – 12.9) and tighten lightly
first
5. Adjust the gap between cutter and bed knife to 0.8-1.0 mm
6. Tighten the cutter mounting screws using a torque wrench.
NOTE: The required torque for all cutter mounting screws is 120 Nm (also see the
table under “Working on Cutting Cutters”).