Heavy Duty Spring Loaded Gate Caster

This 4-inch gate caster features a robust construction with premium polyurethane (PU) wheel and metal housing. It measures approximately 4 inches in wheel diameter, with a total height of around 5.5 inches including the mounting plate. The unit weighs approximately 1.2 kg and supports a maximum static load capacity of 220 lbs (100 kg) per caster. The swivel mechanism allows full 360-degree rotation for smooth directional movement. The spring-loaded design provides vertical travel of up to 1 inch to compensate for ground irregularities. The universal mounting plate includes two pre-drilled holes compatible with standard wooden gates or tubular farm gate rails — suitable for both horizontal and vertical installation. The PU rubber wheel offers quiet, smooth rolling performance while resisting wear, abrasion, and common chemicals or solvents. Its non-marking surface protects paved or concrete surfaces from scratches. The integrated shock-absorbing spring reduces impact stress on gate hardware and hinges during operation, extending overall system lifespan. Ideal for residential driveway gates, agricultural farm gates, garage doors, and commercial perimeter access points where reliable, low-effort operation over uneven terrain is required. Especially effective on gravel, cracked concrete, or sloped driveways where traditional fixed casters bind or lift.