Mitsubishi Billet board Wheel 76-36-6202

Mitsubishi Chain Roller 76*26-6202 bearing,
Billet board material(Phenolic Laminated Board) is used in this roller and the orange parts material is Billet board.
It looks like some Paper fiber in the wood.and used for fire safety.

Mitsubishi Billet board Wheel 76*36-6202 is old type mitsubishi chain roller.