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For optimal cleaning efficiency and long wear life, the ConShear™ blade must be located and tensioned correctly on the belt head
pulley. If the OEM cleaner pole is in the wrong location the performance of the new blade may be adversely affected. See “Possible
Problems” below. For tensioning, please follow these instructions. Our recommended tensioning may be as much as 2 times more
than the OEM recommendation, but the added tension is needed to take full advantage of the ConShear Blade Technology.
Incorrect:
no gap
Correct Tension:
Full contact
between blade
face and belt
Fig. 4
Tip pushed away
from belt
Incorrect:
Larger than
1/8" (3mm) gap
Fig. 2
Fig. 3
Correct Tensioning:
The blade should be tensioned until the gap is gone (Fig. 4).
Possible Problems:
•
Pole location too far out
- The initial blade/belt contact gap
will be larger than 1/8" (3mm)(Fig. 2). If the blade is correctly
tensioned it may flip through before it is fully worn. If tensioned
too lightly, it will develop the “smile effect” quickly and not
clean properly.
•
Pole location too far in
- If there is no gap at the initial
blade/belt contact (Fig. 3), the tip of the blade may not be
touching the belt. In this case, the blade will push away and lose
its shearing (cleaning) effect. The blade may also develop a flap
at the tip which may trap material.
Correct Location:
When blade contact is made against the head pulley (prior to tensioning) there should be a 1/16"
(1.5mm) to 1/8" (3mm) gap at the bottom of the blade face (Fig. 1).
For optimal cleaning and reduced blade retensioning, the cleaner blade width should be sized to fit the material path of the belt. The
material path is typically the center 2/3 of the belt width. Choosing a blade only slightly wider than the material path can decrease
differential blade wear which reduces blade retensioning maintenance, as well as reducing the frequency of blade replacement.
The “Material Path” Option
Match blade width to belt’s material path
Material Path
Belt Width
Blade Width
Material Path
Belt Width
Blade Width
Belt Width Minus 14" (350mm)
Material Path
Belt Width
Blade Width
Belt Width Minus 2" (50mm)
Belt Width Minus 8" (200mm)
Fig. 1
Correct Location:
1/8" (3mm) gap at
initial blade/belt
contact
Installation and
Tensioning Tips
ConShear™ Replacement Blades
for OEM Belt Cleaners
P R O D U C T H A N D B O O K