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 in accordance to ISO 606. Because of the larger chain pitch of dual pitch roller chains it is possible to increase durability by toothing modifications.
Double-toothed sprockets are offered either in full or in half tooth steps. Complete tooth techniques 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 produced with half tooth steps. With every rotation the chain joints move one tooth ahead in the meshing. This reduces the wear of the chain and the tooth edges. This kind of toothing is frequently used when, because of the respective design, just minor deflections can be realised.
Our sprockets and plate sprockets are constructed with 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 produced according to the particular order and customers’ specifications.
On request we supply sprockets with:
Bore and grove
Tapped and pin holes for bore
Tapped and pin holes for bore on pitch circle
Slot holes upon hub and hole circle
Our sprockets for double pitch roller chains are available in a single or in a double-toothed version.
Our in-stock standard dual pitch sprockets are manufactured out of SAE-1045 case hardened steel with extra-hardened teeth and coated with dark oxide. These sprockets are extremely durable, high-strength, and manufactured to high precision tolerances. Stock double pitch sprockets include regular roller and carrier roller style, one duty sprockets are created to purchase and typically take from a couple of business days to a few weeks to manufacture based upon our factory loads and sprocket specifics.
Standard Roller Type
Regular roller type sprockets will be the same outside diameter and width as the single-pitch equivalent simply with a different tooth profile to allow correct seating of the chain. On even tooth-counts, these sprockets just build relationships the chain on every other tooth because there are two teeth per pitch. On odd tooth counts, any given tooth is engaged just on almost every other revolution which of program escalates the sprocket life.
Carrier Roller Type
Carrier roller type dual 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
Single duty sprockets are produced to where every single tooth gets involved evenly on each revolution. This sprocket type is becoming obsolete generally in most applications but is still available.
When using dual pitch roller chain it really is highly recommended if not necessary to use a dual pitch sprocket. It is because dual pitch sprockets are produced with a particular tooth profile which allows for the roller to properly seat and engage with one’s teeth of the sprocket. The above photo on the left is the regular tooth profile and the photo on the right may be the special double pitch sprocket profile. As you can see above, the dual pitch sprockets tooth profile can be somewhat deeper and cut differently to totally accept the dual pitch chain roller. If utilizing a standard sprocket, failure to engage will lead to chain jumping as well as excessive wear. Something important to note is that with chain sizes C2040, C2050, C2060, C2060H, C2080H, C2100H, C2120H, and C2160H when the tooth count is usually 31 or more you can make use of a standard roller chain sprocket. This rule does not apply to carrier roller design chains which where the roller diameter exceeds the sidebar height, these chain sizes include C2042, C2052, C2062, C2062H, C2082H, C2102H, C2122H, and C2162H.
2042A16 SPROCKET WITH STOCK BORE