Heavy-duty rubber caster wheels from Xiamen Yirong Hardware Co., Ltd. combine the strength of metal cores with the resilience of rubber, offering high load capacity with shock absorption and grip. These wheels—featuring a steel or iron core wrapped in thick, industrial-grade rubber (60-75 Shore A)—support 500-3,000kg, withstanding the weight of industrial carts, construction equipment, or heavy machinery. Rubber’s elasticity absorbs shocks from uneven surfaces, protecting both the load and the floor, while its high friction ensures grip on wet, oily, or rough surfaces (concrete, asphalt). Treads are designed to resist wear and abrasion, maintaining performance even after 50,000+ rolling cycles. These wheels are ideal for applications where floor protection and traction are critical, such as factories, warehouses, or outdoor worksites, balancing heavy-duty strength with rubber’s natural benefits.