Double-toothed sprockets can be found either in full or in two tooth steps. Complete tooth techniques are double-toothed to ensure that only part of the the teeth is used effectively. The advantage is that when the chain is certainly exchanged the up to now unutilised teeth can be used after that, and the sprockets can remain in the system.
In order to raise the life cycle of a chain drive even more, sprockets can be produced with half tooth steps. With every rotation the chain joints move one tooth forward in the meshing. This decreases the put on of the chain and the tooth edges. 
This kind of toothing is frequently used when, due to the respective design, just minor deflections can be realised.
Our sprockets and plate sprockets are made of C 45, planetary gearbox stainless steel, and special materials with a material power of between 500 N/mm² and 600 N/mm². Aside from hardened toothing, we also supply surface treated types.
Double pitch roller chains are manufactured according to the particular order and customers’ specifications.
On ask for we supply sprockets with:
Bore and grove
Tapped and pin holes for bore
Tapped and pin holes for bore on pitch circle
Slot holes on hub and hole circle