Oregon OEP 106593X Power Mate Rim Sprocket System 3/8" 7-Tooth Standard 7 Spline

The Oregon Power Mate® Rim Sprocket System (106593X) is a professional-grade, two-piece chainsaw sprocket system designed for 3/8" pitch saw chain with a Standard 7 Spline (SD7) interface and 7-tooth rim. Engineered for durability and extended operational life, this system is trusted by chainsaw users across a wide range of brands and applications.

Key Features:

• Two-Piece Design: Includes a clutch drum/cup with a replaceable rim sprocket, so the rim can be swapped out multiple times before replacing the entire unit — reducing overall operating costs
• 3/8" Chain Pitch: Compatible with the most common and widely-used saw chain pitch
• 7-Tooth Standard 7 Spline (SD7): Precisely engineered spline fit for proper power transfer
• Floating Rim: The rim floats freely on the spline, maximizing alignment between the saw chain and bar groove for reduced wear
• Cold-Forged Construction: Manufacturing process significantly improves durability and performance over the life of the sprocket
• Replacement Rim Included: Oregon 68210 rim sprocket is used with this system (bearing sold separately — Oregon 37501)
• Note: Part number ends in "X" — bearing is not included and must be purchased separately (Oregon part #37501)

Specifications:

• Pitch: 3/8"
• Tooth Count: 7
• Spline Size: Standard 7 (SD7)
• Sprocket Type: Power Mate® Rim System
• Compatible Rim: Oregon 68210
• Compatible Bearing: Oregon 37501 (sold separately)
• Radial Port: Not included
• OEM Cross-Reference: Replaces Husqvarna 503-9326-01, 503-9324-71

For best results, replace the rim sprocket every three rims, and note that one sprocket drum will typically outlast two complete chain replacements. The pitch of the sprocket, saw chain, and bar tip must all match for proper operation.