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Hansa C21 O&M Manual - OM-010 Revision L 21/05/2021
© Hansa Chippers 2021
14
Measure the width of the knife and check that it will be at least 65 mm
after sharpening.
If the knives will be shorter than 65 mm, then the knives should be
replaced. Please contact your nearest Hansa dealer.
Sharpen the knives
Sharpen the knives on a surface grinder. A cutting angle of 38 ° is critical
for the performance of the chipper. Make sure plenty of coolant is used
when grinding to avoid softening of the steel knives.
Reinstall the knives
Clean all mounting surfaces and remount
the knives in the reverse procedure.
Note
: Be sure to replace the knives the
correct way around (as shown in the
diagram). Only tighten the clamping bolts
enough to hold the knives in place during
adjustment. Do not tighten them fully until
step 7.
Adjust the knives initially using the
adjustment bolts to protrude the edge of
the knife just past the edge of the knife
holding block.
3
MIN 65 mm
4
5
Adjustment bolts
6
38 °
Knife holding
block
Knife
Side view: Cutting rotor
Clamping bolts
Clamping plate
Knife
Locking nuts
Rotor disk
Knife holding block