The 11891 rim has a .325" pitch and 8 teeth. Oregon rims offer the ultimate cutting system performance by providing a smoother cutting experience and less chain wear when compared to spur sprockets. The rim's radial port design uses centrifugal force to throw off sawduck and debris. Wear-depth indicators show when it's time to replace the rim. Replace the rim every two chain loops. This rim works with certain Dolmar, Husqvarna, Jonsered, Makita, McCulloch, Olympyk, Partner, Pioneer, Poulan and Stihl chainsaw models. Check the fit guide to see if this rim works with your saw.
Product Details
Pitch: .325", Size: Small 7 Spline, Tooth Count: 7
Radial port design uses centrifugal force to throw off sawdust and debris
Wear-depth indicators show when it's time to replace
For best performance, every two chain loops
Specifications, Details & Support
Sprocket
Sprocket Type
Rim
Pitch
Pitch
Chain Pitch is the size of the chain, and is defined as the distance between any three consecutive rivets divided by two. Oregon chain is made in several pitches - 1/4" is the smallest, 3/8" is the most popular, 3/4” is the largest. Pitch is important because the drive sprocket must be the same pitch as the chain, and if applicable, the bar nose sprocket. The easiest way to determine the pitch of your chain is to look at the number stamped on the drive link.
.325"
Sprocket Tooth Count
Sprocket Tooth Count
Your saw may be compatible with various drive sprockets. If this is the case, a smaller tooth-count will deliver more speed, while a larger tooth-count will deliver more torque (useful on smaller saws). Tooth-count may also influence the drive link count on replacement chain.