12B (3/4") tandem sprockets

12B tandem sprockets have two tooth rims for two 12B-1 simplex chains of 3/4" (19.05 mm) pitch to DIN 8187 / ISO 606. They perform well in heavier roller conveyors and in drives where one shaft transmits power to two further shafts.

12B tandem sprockets - a cascade drive that is easier to service

A cascade drive on tandem sprockets is easier to service - each chain loop is tensioned and replaced separately. Taper-Lock sprockets are fitted without boring, and versions with hardened teeth extend sprocket life in continuous duty. The group also includes a hardened sprocket with a machined keyway, ready to fit on the shaft.

3/4 inch tandem sprockets: standard, Taper-Lock and induction-hardened

12B tandem sprockets in C45 steel: standard, with a Taper-Lock bush seat and selected ones with induction-hardened teeth.

Choosing a Taper-Lock bush for a 12B tandem sprocket - customer questions

How do I choose a Taper-Lock bush for a 12B sprocket?

The bush size follows from the sprocket seat given in the name. You select a bush of that size with a bore equal to the shaft diameter and with a keyway.