JCB 332/U6563 Rear Idler Pulley Assembly

The 332/U6563 rear idler pulley assembly is a critical undercarriage component designed to guide the rubber track and maintain proper tension on JCB compact track loaders. The assembly consists of a forged steel shell with an induction-hardened running surface, a cast iron hub, and a sealed tapered roller bearing cartridge for maintenance-free operation. This unit replaces the OEM JCB part numbers 332/U6563 and JC332-U6563. It is engineered to match OEM dimensional specifications for track pitch compatibility and flange clearance. The bearing is pre-lubricated with high-temperature lithium complex grease and sealed against abrasive contamination. The assembly mounts to the rear track frame via the existing idler shaft and adjuster mechanism. Cross-reference interchange includes aftermarket part numbers LK438, 332P5843, and legacy references 215-12230, 322P5842, 2332660. The front idler counterpart for these models is 332/U6561. Verification of machine serial number is recommended prior to installation to ensure correct track frame configuration.