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Sprocket and Rim


The power from your chainsaw drives the sprocket, and the sprocket drives your cutting chain at high speed around your guide bar. Your sprocket, chain, and guide bar are the three components of your saw's "cutting team." It's the cutting team that does the actual work of cutting, and your sprocket is an essential member of the team. Oregon?sprockets can be installed on chainsaws having either inboard, or outboard clutch assemblies. Follow the instructions in the operator's manual provided by your chainsaw manufacturer for correct sprocket installation.

Oregon chainsaw sprockets come in three basic forms:

1. Rim sprocket systems: Oregon rim sprocket systems have two components: a clutch cup with splined hub, and a free-floating rim. It is only the rim that makes contact with your chain as the chain is driven around your bar. Rim-type sprocket systems are available for professional and commercial chainsaw users and are favored by those who want the ultimate in performance.

2. Replaceable free-floating rims: The free-floating rim is the component of a sprocket system which is replaced more frequently. Oregon offers replacement rims, apart from the sprocket system, in a variety of sizes and tooth-counts for professional and commercial chainsaw users.

3. One-piece spur sprockets: One-piece spur sprockets are durable, economical, simple to use, and very popular. The chain-driving portion of the sprocket, and the clutch cup, are a single component and are all replaced together when a new spur sprocket is installed. Oregon? spur sprockets are available for all types of chainsaw users: professional users, commercial users, and occasional users.

POWER MATER SPROCKET SYSTEMS

Available to fit most chainsaws. Complete system includes clutch cup with spline and replaceable rim sprocket.

 

 

 

 


POWER MATER RIM SPROCKETS

Rim sprockets "float" on the splined hub, allowing chain and sprocket to self-align with the bar groove. The three most popular sizes are available in a radially ported design, which uses centrifugal force to throw off sawdust and debris.

 

 


CONSUMER SPUR SPROCKETS

These sprockets offer excellent performance and top value for occasional users of lightweight, high-speed consumer chainsaws. Designed specifically for use with 90 series chain types (90SG, 91VG, 91VS).

 

 


PRO-AMR SPUR SPROCKETS

An economical sprocket built to fit a limited group of saws operated by users who prefer professional-type 3/8"-pitch chain. Pro-AmR spurs - low cost and excellent value.

 

 

 


PRO SPURR SPROCKETS

For professional users who prefer a spur-type sprocket. Pro SpurR sprockets are rugged and dependable. They have excellent wear resistance and are available to fit professional-type .325"-, 3/8"-, and .404"-pitch chains.

 

 


ADDITIONAL COMPONENTS

Some of the special parts used in conjunction with OregonR sprockets are available separately. These include dust covers, bearings, washers, pump drivers, and neoprene seals.