28B (1 3/4") hardened hub sprockets

28B hardened hub sprockets are sprockets for 28B roller chain of 1 3/4" (44.45 mm) pitch to DIN 8187 / ISO 606, with induction-hardened teeth. In this size we offer selected driving sprockets for heavy, low-speed industrial drives.

28B hardened sprockets - fewer heavy sprocket replacements and shorter downtime

With sprockets this large, every replacement means costly downtime and work with a crane. Teeth hardened to 45-55 HRC wear more slowly, and the C45 steel hub is not hardened, so you can machine it to the shaft size.

1 3/4 inch hardened sprockets: simplex and duplex in C45 steel

28B simplex and duplex sprockets in C45 steel with hardened teeth - the choice is small, so there are no subgroups in this group. 28B sprockets with unhardened teeth can be found in the Hub sprockets group, and plate wheels - in the Plate sprockets group.

Hardened sprockets for 28B chain - customer questions

What if the hardened 28B sprocket I need is not available?

Check the 28B sprockets with unhardened teeth in the Hub sprockets group - they have the same tooth profile and work with the same chain.