08B (1/2") hardened hub sprockets

08B hardened hub sprockets work with 08B roller chain of 1/2" (12.7 mm) pitch to DIN 8187 / ISO 606. The sprocket teeth are induction-hardened, which is why they are chosen for agricultural machinery, conveyors and industrial machines that run long, fast or in dust.

08B hardened sprockets - longer life for the most frequently replaced sprocket

08B chain is one of the most widely used in Europe, and the 08B driving sprocket is a part that needs replacing particularly often. Teeth hardened to 45-55 HRC significantly extend its service life, while the C45 steel hub remains soft - you bore the hole out for your shaft without special tools.

1/2 inch hardened sprockets in simplex and duplex versions

08B-1 simplex and 08B-2 duplex sprockets with hardened teeth - each version has its own subgroup. 08B sprockets with unhardened teeth can be found in the Hub sprockets group.

Questions and answers: hardened sprockets for 08B chain

Why does a hardened sprocket work well in agricultural machinery?

Dust, sand and plant residues act as an abrasive. Hard teeth withstand this much better, so the sprocket keeps its correct profile longer.

Does a hardened 08B sprocket fit 081 or 085 chain?

No. 081, 083/084 and 085 chains have the same pitch but a different design - sprockets for them can be found in the Hub sprockets group.