The LD-429 heavy duty caster wheel series is engineered for the most demanding industrial applications where strength, durability, and reliable performance under extreme loads are essential. Each caster features a robust welded steel bracket constructed from 4-8mm thick steel plate, with reinforced leg supports and a heavy-duty kingpin design that provides exceptional resistance to impact, shock loading, and side forces. The top plate mounting base is extra thick with multiple bolt hole patterns to accommodate various equipment configurations and ensure a secure, stable connection to heavy equipment and carts. At the center of each wheel is a solid cast iron core with a vulcanized rubber tire bonded firmly to the outer surface. The iron core provides maximum structural rigidity and heat dissipation, while the rubber tread offers excellent traction, shock absorption, and floor protection compared to all-metal wheels. The rubber compound is specially formulated for industrial use, with high abrasion resistance and the ability to withstand continuous rolling under heavy loads without degradation. Wheel sizes range from 100mm to 300mm in diameter, with widths from 40mm to 80mm, providing load capacities from 200kg to an impressive 800kg per individual caster. The swivel mechanism incorporates a heavy-duty double ball race design with heat-treated raceways and oversized hardened steel balls, capable of supporting both radial and thrust loads under the most demanding conditions. For even higher load applications, tapered roller bearings are available as an upgrade option, providing superior load distribution and extended service life under extreme weight. The total lock brake mechanism simultaneously locks both wheel rotation and swivel action, using a heavy-duty steel cam and friction pad design that delivers positive locking even when the caster is under full load. This ensures that heavy equipment and carts remain securely positioned on inclines or during loading operations. Designed for use in warehouses, factories, distribution centers, and heavy industrial environments, the LD-429 series excels on concrete floors, warehouse surfaces, and outdoor pavement where standard light-duty casters would quickly fail. The zinc-plated or powder-coated bracket finish provides corrosion resistance for long-term durability in demanding conditions. Whether used on heavy platform trucks, industrial machinery bases, automotive service equipment, or material handling carts, these heavy-duty casters deliver the strength, reliability, and performance that industrial operations depend on. The combination of an iron core for structural integrity and a rubber tire for traction and floor protection makes the LD-429 series the ideal choice for heavy-duty mobility solutions.