Replacement for 33H939 Plate Caster, Rigid, Polyurethane, 6 3/16' H (33H939) A direct replacement plate caster designed to restore mobility and stability to equipment that originally used model 33H939. This rigid, platemounted caster uses a durable polyurethane wheel to deliver reliable, longlasting service while protecting floors and maintaining a fixed rolling direction. Key benefits Straightforward replacement: Built to match the original 33H939 specification so you can swap casters quickly and reduce downtime. Durable polyurethane tread: Resists abrasion, chemicals, and wear better than standard rubber, extending service life and reducing maintenance. Floor protection and quiet operation: Polyurethane reduces marking and minimizes noise compared with harder metal wheels. Fixeddirection stability: Rigid (nonswivel) design maintains straight travel, improving control for loaded carts and equipment. Key attributes Model compatibility: Replacement for 33H939, listed as 33H939. Type: Platemounted caster, rigid (nonswivel). Wheel material: Polyurethane for wear resistance and floor protection. Overall height: 6 3/16 inches. Functionality and performance This rigid plate caster is intended to provide a dependable, fixeddirection rolling solution. The polyurethane wheel balances loadcarrying durability with softer contact on floors to reduce scuffs and absorb vibration. Use it when you need consistent straightline movement and lownoise operation. Typical applications Industrial carts and materialhandling equipment where stable, straight tracking is required. Machine bases and fixtures that need durable casters that protect concrete or finished floors. Workbenches or utility carts in warehouses and production areas where quieter operation and reduced floor marking are desired. Installation and fit Designed as a replacement for the 33H939 plate caster to simplify installation and restore original performance. Platemounted format provides a secure attachment point for fixed caster applications. If you need a robust, lowmaintenance replacement that preserves the original fit and performance of model 33H939, this rigid polyurethane plate caster offers a practical and durable option.