LR5203X-ZZ LR5203KDD Track Rollers Series Bearing

The LR5203X-ZZ is a double-shielded track roller bearing designed to run directly on track surfaces or guide rails. The ZZ (also designated KDD) suffix indicates metal shields on both sides to protect internal components from contamination while retaining lubrication.

Track roller bearings are commonly used in cam follower applications, conveyor systems, linear motion guides, and material handling equipment where the bearing must support radial loads while rolling on flat or profiled surfaces. The double shield design suits moderate-speed applications in environments with dust or debris.