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  2. Roller Chain Sprockets & Hubs

Sprockets & Sprocket Hubs

Sprockets are a toothed wheel that works in conjunction with roller chain to power all types of machinery. Sprockets come in many different configurations, tooth counts and bore sizes. We stock an extensive range of finished bore sprockets, type A sprockets, idler sprockets & weld on sprockets. Nitro™ sprockets are manufactured from 1045CD (cold drawn) carbon steel with hardened teeth for better wear resistance. All sprocket types fully conform to the ANSI B29.1 standards. MTO sprockets are available by quotation for OEM's, aftermarket suppliers and resellers.

You can view our easy-to-use sprocket diameter chart to find the tooth count by chain size and diameter needed.

Sprocket Types

We stock a large selection of various types of sprockets that come in many chain sizes, tooth counts and bore sizes. Most Nitro sprockets have hardened teeth to help resist tooth wear.

Type BS Sprocket or Type B Sprocket

These are by far the most common sprocket used in chain & sprocket driven machines. The sprockets are bored to size and include a keyway & 2 setscrews for attaching to a shaft.

Type A Sprocket

Mostly used for machining in bolt holes or to weld directly onto a shaft. These are commonly called "plate sprockets"

Type BB Sprocket

Free-wheel sprocket for taking up slack in chain drives that use long lengths of chain.

Type X Weld On Sprocket

These are universal sprockets that allow you to "Build-a-sprocket" by welding in a weld-on-hub that is available in wide range of bore configuration and sizes.