12B-1 simplex plate sprockets

12B-1 plate sprockets are simplex plate wheels for 12B-1 chain of 3/4" (19.05 mm) pitch to DIN 8187 / ISO 606, for welding or bolting on.

12B-1 simplex plate wheels for your own hub or drum

A wide choice of tooth counts lets you select the ratio for any machine, and a plate wheel without a hub lets you build a sprocket on your own hub or drum. The version with hardened teeth is worth using when working in dust, sand or plant residues, which accelerate tooth wear - typically in agricultural machinery.

12B-1 plate sprockets with unhardened and hardened teeth

12B-1 simplex plate wheels in C45 steel, with unhardened and hardened teeth. You can recognise hardened versions by the word "hardened" in the name.

Hardened 12B-1 plate wheel on the driving or driven sprocket - questions

Where does a hardened plate wheel work better - as the driving or the driven sprocket?

As the driving sprocket. The smaller sprocket rotates faster, so each of its teeth engages more often and wears faster.