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Pi Fabricators

CBN grinding wheel for 3/4 inch pitch Pi Harvester Chain - 100 grit

CBN grinding wheel for 3/4 inch pitch Pi Harvester Chain - 100 grit

Regular price $279.00 CAD
Regular price Sale price $279.00 CAD
Sale Sold out

This CBN grinding wheel is designed to sharpen 3/4 inch pitch harvester chain.

You can sharpen your chains hundreds of times and this wheel won't loose it's shape.  

Cutouts help the wheel run cooler and clear debris more effectively.

Each wheel ships with a 150 grit dressing stick that is used to clean the CBN wheel from time to time.

We recommend this wheel or an equivalent CBN wheel for grinding Pi Harvester Chain. Standard aluminum oxide grinding wheels (pink wheels) will require frequent reshaping. 

Note that this wheel has a break in period. It will grind more aggressively when it is new then settle to a steady state.

Made in USA


Wheel Diameter: 5-3/4" ((146mm)

Wheel Thickness: 5/16" (7.9mm)

Wheel arbor hole: 7/8" (22.2mm)

Coarseness: 100 Grit


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How to dress a CBN grinding wheel:

Recommended procedure:

1) Push the dressing stick into the wheel and work the stick along the grinding edge of the wheel until you can not observe any sparks coming off the wheel.

    - It can take up to an inch of the dressing stick to properly clean the wheel.

    - Expect to dress the CBN wheel after sharpening five harvester chains. 

    - What is happening when you dress your CBN wheel is that the dressing stick is removing steel that has become embedded between the CBN abrasive particles. 

2) After you have properly dressed your CBN wheel you should be able to feel that the wheel has become rough again. 

    - Verify that the CBN abrasive is uniformly rough and that there are not any lines or streaks along the wheel that are smooth. If you find streaks that are not rough dress those areas of the wheel until you do not see any streaks. Note that you may consume an inch of dressing stick to clean a CBN wheel. 


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