Description
Oregon Power Mate® Rim Sprocket System – 3/8″ x 7 Tooth (Standard Spline)
The Oregon 26831XSF is a professional-grade two-piece drive system designed for high-performance chainsaws. By utilizing a free-floating rim on a splined drum, this system allows the chain to self-align with the guide bar’s groove, resulting in reduced friction, smoother cutting, and significantly less chain wear compared to standard spur sprockets.
Cold-Forged Durability
Built using Oregon’s cold-forged manufacturing process, this sprocket offers superior strength and heat resistance. The modular design is highly economical; because the rim is the only part that contacts the chain, it can be replaced multiple times before the entire drum unit needs service.
Product Specifications:
| Part Number | 26831XSF (26831X) |
| Pitch / Tooth Count | 3/8″ Pitch / 7 Tooth |
| Spline Size | Standard 7 Spline (SD7) |
| Replaces OEM | Husqvarna 501 83 15-04 |
Model Fit Guide:
- Husqvarna: 61, 266, 268, 272
- Jonsered: 625, 630, 630 Super, 630 West Coast, 670
⚠️ Critical Fitment Note:
The pitch of your sprocket, saw chain, and bar tip must all match. This system is for 3/8″ pitch only. Additionally, ensure your crankshaft diameter is 0.500″ (1/2″) for proper compatibility.⚙️ Related Parts & Maintenance:
- Needle Bearing: Part H131613 (Sold Separately)
- Replacement Rim (7T): Part 38-7L7
- Replacement Rim (8T): Part 38-8L7
