4 Inch Polyurethane Caster Wheel 600 lb Capacity Heavy Duty Nonmarking Smooth Rolling for Carts

Model UPR042008A Caster — 4 in polyurethane wheel, 600 lb load rating Key benefits load capacity: Rated for 600 lb within a 300 to 999 lb range, suitable for light to medium duty applications that require reliable support and long service life. Floorfriendly, nonmarking tread: Polyurethane tread protects floors and reduces scuffing while maintaining grip and wear resistance. Durable construction: Glass filled nylon wheel core provides strength and impact resistance without adding excessive weight. Firm rolling performance: 95 Shore A durometer offers low deformation under load for stable handling and reduced rolling resistance. Easy integration: Designed for use with a 1/2 in axle (axle not included) and ships with a spanner bushing for simplified installation. Key specifications Wheel diameter: 4 in Wheel width: 2 in Tread material: Polyurethane, firm (95 Shore A) Core material: Glass filled nylon Tread profile: Standard roller style Load rating: 600 lb (within 300 to 999 lb range) Axle size required: 1/2 in (axle not included) Included hardware: Spanner bushing Hub length: 2 7/16 in Performance and compatibility The firm polyurethane tread balances shock resistance and low rolling resistance, making this caster suitable where consistent movement and payload stability are needed. Hub length and 1/2 in axle compatibility fit many standard caster housings and mounting configurations. Confirm axle and mounting dimensions before installation. Typical applications Material handling carts and platform trucks that need durable, floorfriendly wheels for regular loading and unloading. Equipment stands and fixtures where stable rolling and resistance to deformation under load improve handling and longevity. Retail displays or service carts where nonmarking wheels protect interior flooring while supporting moderate payloads. Installation notes Axle is not included. Requires a 1/2 in axle and proper fastening hardware for installation. A spanner bushing is included to assist alignment and secure mounting in compatible housings. This caster offers a practical balance of durability, floor protection, and load capacity for a wide range of light to medium duty rolling equipment.