Premium Metric 24B Roller Chain Connecting Link (Master Link) 29-Tooth Sprocket UCF211-34 bearing is a 2-1/8"

UCF211-34 bearing is a 2-1/8" bore four-bolt normal-duty flange bearing that utilizes set screws to secure to a 2-1/8" shaft

This 6308 ball bearing is a high-precision premium quality deep groove 40x90x23 ball bearing made to ABEC 3 precision standards from AXIS

This 40BS51 sprocket features a 1-1/2" finished bore including a key-way and two setscrews

It also has the broadest operating temperature range of any standard "on the shelf" roller chain

Set Screw Size: 7/8"-20UNCX7/8"

Premium Metric 24B Roller Chain Connecting Link (Master Link) 29-Tooth Sprocket UCF211-34 bearing is a 2-1/8"Premier Series 24B connecting link is manufactured out of a high quality carbon steel chain and is engendered to have little to no strength difference between the link and the chain. This 24B connecting link features fully heat treated, hardened, and shot peened components to ensure maximum strength and durability.