Description
Overview:
The 3/8" Standard 7-8 Rim for Oregon (OEM No. 22273) is a genuine replacement drive rim for chainsaw clutch sprocket systems. Built from hard-wearing steel, it transfers power from the clutch drum to the chain, helping to maintain correct chain engagement and stable tension under load. Designed for chainsaws that run a 3/8" (9.5 mm) pitch chain and a standard 7-spline hub with an 8-tooth profile, it is a dependable choice for keeping cutting performance consistent. Replacing a worn rim prevents premature wear to the chain and guide bar, supports smooth cutting, and reduces the risk of slippage. Suitable for professional forestry, arborist, and landscaping use, as well as demanding DIY tasks, this genuine Oregon part offers an accurate fit and reliable service life.
Key Features:
- Genuine Oregon OEM rim (22273) for assured compatibility and fit
- 3/8" (9.5 mm) pitch, standard 7-spline / 8-tooth (7-8) configuration
- Durable steel construction for long service life in tough conditions
- Helps maintain correct chain alignment and tension for smooth cutting
- Simple slip-on rim design for quick replacement during routine servicing
- Replacing the rim only can reduce running costs versus full sprocket changes
- Supports consistent power transfer and reduces the chance of chain jump
- Suitable for chainsaws using rim-type clutch drums that accept a 7-spline rim
Typical Applications:
Regular chainsaw maintenance in forestry, arboriculture, landscaping, grounds care, and firewood processing. Ideal when refurbishing the drive system to restore smooth chain drive, reduce bar and chain wear, and keep saws cutting efficiently on felling, pruning, snedding, and general property or site clearance tasks.
Also known as:
Rim sprocket, drive rim, clutch rim, replaceable rim sprocket, rim drive, PowerMate rim, 3/8 in 8T rim, chainsaw sprocket rim, 7-spline rim. These terms are often used for the same component that fits over a compatible clutch drum to drive a 3/8" (9.5 mm) chainsaw chain.
Alternate Part Numbers:
22273
Product Specifications
| L&S Part No. | OR22273 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Oregon |
| OEM No. | 22273 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Oregon |
| Key Features | - Genuine Oregon OEM rim for assured compatibility and fit - 3/8" pitch, 7-spline, 8-tooth configuration - Durable steel construction for long service life - Simple slip-on design for quick replacement - Suitable for chainsaws with 7-spline rim-type clutch drums |
