12B-3 triplex plate sprockets

12B-3 plate sprockets are triplex plate wheels for 12B-3 chain of 3/4" (19.05 mm) pitch to DIN 8187 / ISO 606, designed for heavy drives of compact design.

12B-3 triplex plate wheels - high torque at a moderate diameter

Three chain strands transmit high torque at moderate sprocket diameters, and a plate wheel without a hub lets you build a sprocket exactly for your machine. For a heavily loaded driving sprocket choose the version with induction-hardened teeth, which keeps its tooth profile longer.

12B-3 plate sprockets, unhardened and selected hardened

12B-3 triplex plate wheels in C45 steel, with unhardened teeth and selected ones with hardened teeth.

Choosing the weld for a heavy 12B-3 plate wheel - customer questions

How do I choose the weld for a heavy plate wheel?

The weld must transmit the full drive torque, so for triplex plate wheels a circumferential weld on both sides and preheating are used. If in doubt, it is worth consulting a design engineer about the joint.