4B64SD Sheave four-groove 6.75" OD SBLF200 2-Bolt Set Screw Flange Bearings Because this chain tensioner floats

Because this chain tensioner floats on the chain

Pin Length (L): 54

UCST213-40 take-up bearings are designed for take-up frames

Common Interchanges: 40BS24H

Sheave Weight: 7

4B64SD Sheave four-groove 6.75" OD SBLF200 2-Bolt Set Screw Flange Bearings Because this chain tensioner floatsThis 4B64SD sheave features four grooves, is 6. 75" in diameter, and is designed to use a SD bushing. QD (quick detachable) style sheaves offer a wider selection of bore sizes versus a standard "fixed" bore style sheave. Also because they are a two component part if one component fails the entire part doesn't need to be replaced. All of our sheaves are manufactured out of an extremely durable cast iron, are dynamically balanced at the factory, and are