Medium-Duty Whitee PP Castor Wheel Wear Resistant Pulley Trolley Casters With Brake 3 Inch 4 Inch 5 Inch Double Ball Bearing

Our medium-duty white PP caster is one of our best-selling wheel series, designed for medium load transport scenarios. This series contains three styles: total lock swivel caster, free swivel caster and rigid fixed caster, to meet all movement and locking demands for trolleys, storage racks, workshop equipment and furniture.

1. Smooth Dual-Bearing Structure
   Adopts 6001 double ball bearings, greatly reducing rolling resistance. The wheel rolls quietly and flexibly without jamming under rated load, bringing stable and labor-saving movement experience.

2. High-Strength White PP Wheel
   The wheel is made of solid polypropylene (PP) material, featuring outstanding impact resistance, wear resistance and load-bearing capacity. The milky white appearance is clean and neat, suitable for food factories, medical workshops, supermarkets and clean rooms. PP material will not leave scratches on epoxy floors, tiles and cement ground.

3. Rust-Proof Galvanized Steel Bracket
   Thickened steel plate is stamped into brackets with galvanized surface treatment, effectively resisting rust, oxidation and slight corrosion. The swivel head is built with multiple steel balls, supporting flexible 360-degree rotation.

4. Three Optional Functional Types

• Total Lock Swivel Caster: One-step double lock design, locks both wheel rolling and 360° rotation, fully fixing the equipment to avoid sliding.
• Free Swivel Caster: No brake design, flexible steering for frequent direction adjustment.
• Rigid Fixed Caster: Only moves straight forward, matched with swivel casters to keep carts running stably without deviation.

5. Universal Standard Mounting Plate
   Uniform square top plate and consistent hole spacing for all sizes, simple to install, disassemble and replace on most standard transport equipment.

Complete Product Specifications

Perfect for warehouse turnover trolleys, workshop tool carts, medical equipment, supermarket display racks, logistics transport vehicles, furniture bases and light industrial machinery.

✅ Dual ball bearing, silent & smooth rolling
✅ Solid white PP wheel, wear-resistant & floor-friendly
✅ Galvanized steel bracket, anti-rust & long service life
✅ Three functional styles for all locking & moving needs
✅ Stable quality, hot-selling medium-duty caster with cost performance

Our medium-duty dual-bearing white PP casters are hot-selling products with three types: full lock swivel, free swivel and rigid fixed caster. Equipped with 6001 double ball bearings for smooth quiet rolling. The solid white polypropylene wheel is impact-resistant and will not scratch floors. The galvanized steel bracket prevents rust. Available in 3/4/5 inch sizes, widely used for trolleys, racks, medical and workshop equipment.