Sprockets for double pitch roller chains are available in a single or double-toothed design. Single-toothed sprockets for dual pitch roller chains have the same behaviour as regular sprockets for roller chains according to ISO 606. Due to the bigger chain pitch of dual pitch roller chains it is possible to increase toughness by toothing modifications.
Double-toothed sprockets are offered either completely or in half tooth steps. Complete tooth measures are double-toothed to ensure that only a part of the tooth is used effectively. The benefit is that whenever the chain can be exchanged the so far unutilised tooth can be used then, and the sprockets can remain in the system.
In order to boost the life cycle of a chain drive a lot more, sprockets can be manufactured with half tooth steps. With every rotation the chain joints move one tooth forward in the meshing. This reduces the wear of the chain and the tooth edges. This kind of toothing is often used when, due to the respective design, only minor deflections could be realised.
Our sprockets and plate sprockets are made of C 45, stainless, and special components with a material strength of between 500 N/mm² and 600 N/mm². Apart from hardened toothing, we also supply surface area 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
Our sprockets for dual pitch roller chains can be found in a single or in a double-toothed version.
Our in-stock standard double pitch sprockets are manufactured out of SAE-1045 case hardened metal with extra-hardened teeth and coated with black oxide. These sprockets are really durable, high-strength, and manufactured to high precision tolerances. Stock double pitch sprockets include regular roller and carrier roller design, single duty sprockets are created to order and typically take from a few business days to some weeks to produce based on our factory loads and sprocket specifics.
Standard Roller Type
Standard roller type sprockets will be the same outdoors diameter and width as the single-pitch equivalent simply with a different tooth profile to permit proper seating of the chain. On actually tooth-counts, these sprockets only engage with the chain on every other tooth because there are two the teeth per pitch. On odd tooth counts, any given tooth is engaged only on almost every other revolution which of course increases the sprocket life.
Carrier Roller Type
Carrier roller type double pitch sprockets are cut with space cutters to allow the carrier roller to properly seat and engage with each tooth. These sprockets could have the same diameter as the ANSI single-pitch equivalent.
Single Duty Type
One duty sprockets are produced to where every tooth gets engaged evenly on every revolution. This sprocket type has become obsolete in most applications but continues to be available.
When using dual pitch roller chain it is highly recommended if not necessary to use a dual pitch sprocket. It is because dual pitch sprockets are produced with a special tooth profile which allows for the roller to properly seat and build relationships the teeth of the sprocket. The above picture on the left is the standard tooth profile and the photo on the right may be the special double pitch sprocket profile. As you can see above, the double pitch sprockets tooth profile can be somewhat deeper and cut differently to totally accept the dual pitch chain roller. If using a standard sprocket, failing to engage will lead to chain jumping along with excessive wear. Something vital that you note is usually that with chain sizes C2040, C2050, C2060, C2060H, C2080H, C2100H, C2120H, and C2160H when the tooth count is usually 31 or even more you can make use of a standard roller chain sprocket. This guideline does not connect with carrier roller style chains which where in fact the roller diameter exceeds the sidebar elevation, these chain sizes include C2042, C2052, C2062, C2062H, C2082H, C2102H, C2122H, and C2162H.
2042A16 SPROCKET WITH STOCK BORE