PWTR17-2RS-XL Track Roller Bearing Cam Follower - Cylindrical RollerPWTR17 2RS XL Cam Follower Bearing 17mm x 40mm x 20mm Sealed Track Roller with Needle Rollers The PWTR17 2RS XL is a cam follower style needle roller bearing designed for track systems, linear guides, or automated motion setups. It features a 17mm inner bore and a 40mm outer diameter with 2 rubber seals to keep contaminants out and grease in. This track roller is ready to handle high loads in compact spaces. Size: 17mm ID x 40mm OD x 20mm length Cam