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The ultimate sprocket for all types of chain saw users.
The Power Mate® Rim Sprocket System is the most effective way to drive saw chain on most chain saws.
• The Power Mate® Rim Sprocket System includes a clutch cup with splined adaptor and a replaceable rim sprocket.
• The rim floats freely on the splined adaptor, maximizing the saw chain bar groove alignment.
• The rim is designed to be replaced, maximizing operational life and reducing overall operating costs.
Note: All rim sprockets have two sets of teeth.
A rim is installed on the clutch cup by sliding onto the cup’s toothed splined adaptor. OREGON® splined adaptors come in two sizes, “Small 7” and “Standard 7.” The teeth on the splined adaptor and the teeth on the inner diameter of the rim work as a team to prevent the rim from spinning on the splined adaptor. Spline teeth should not be confused with the slotted chain-driving teeth on the outside of the sprocket. When referring to the sprocket application tables, the heading “Drive Teeth” refers to the chain-driving teeth, while the splined adaptor size and number of teeth is found listed under Power Mate® System.
Spline Teeth
Spline Teeth
Chain−driving Teeth
Radial Port
OREGON® RIMS
The benefits of a replaceable rim in the Power Mate® sprocket system
OREGON® Rims are preferred by most professional chain saw users.
• The rim floats on the splined adaptor and allows the saw chain and rim to align with the groove of the guide bar.
• Three of the most popular sizes are available in a radial port design, which uses centrifugal force to throw off sawdust and debris.
• Popular rims are available with wear-depth indicators, which make it easy to tell when the sprocket should be replaced.
Wear-depth Indicators
Radial Port
FOR 128
NOTE: Order Rims in standard multiples of 10. OREGON® Rims are packaged in 10-packs. For any other ordering multiple, check with your authorized OREGON® distributor for availability.