Oregon OEP Power Mate Rim Sprocket System Pitch Sprockets

The Oregon Power Mate Rim Sprocket System is a two-piece chainsaw drive sprocket (also called a rim sprocket or drum sprocket system). It is built to drive saw chain efficiently on most chainsaws. Each system pairs a splined clutch drum with a replaceable rim sprocket. The rim can be swapped out several times before the whole unit needs replacing.

Key Features:

• Replaceable rim design: You can replace just the worn rim instead of the entire sprocket. This extends the life of the system and lowers operating costs.
• Free-floating rim: The rim floats on the drum spline. This helps the chain and rim stay aligned with the bar groove as the chain travels around the bar.
• Smoother cutting: Rim sprocket systems give smoother cutting and less chain wear than one-piece spur sprockets.
• Multiple pitch options: The line covers .325", 3/8" and .404" pitch saw chains, in a range of spline configurations.
• Long service life: Oregon's replacement guideline is that one sprocket lasts through two chains. For best performance, replace the rim every three chains.

The sprocket pitch, saw chain pitch and bar tip pitch must all match. The pitch is the number stamped on the chain's drive link. Use the Oregon selector guide or your saw's specifications to choose the correct pitch, spline type and tooth count. Oregon's Power Mate system is a popular choice for professional, commercial and occasional chainsaw users who want reliable chain drive and lower long-term costs.