Heavy duty Rigid Pu-iron Castor

Wheel Diameter: 100mm, 125mm, 150mm, 200mm; Wheel Width 32-50mm ;
Wheel Material: Polyurethane tread bonded to Cast iron core;
Housing: high strength 4.0 mm thickness steel, Yellow Zinc finished, double ball-race Swivel head, with dust proof seal;
Load Capacity: 220KG-350KG;
Fixing type: Top plate;
Swivel/Rigid: Rigid;
Brake device: without;
Wheel Hardness: 93±2 Shore A;
Bearing: Double ball bearing;
Temperature Range: 60℃~-15℃;