Wheel Diameter Tread Width Capacity Per Caster Wheel Bearing Modle number Load Height Swivel Radius (mm) (mm) (kg) Swivel Rigid (mm) (mm) 100 51 270 Polyurethane Delrin 4-4T01S-401C 4-4T01R-401C 143 90 Roller 4-4T01S-401E 4-4T01R-401E Double ball 4-4T01S-401G 4-4T01R-401G 350 Moldon Polyurethane (Iron Core) Double ball 4-4T01S-431G 4-4T01R-431G 350 Moldon Polyurethane (Aluminum Core) Double ball 4-4T01S-471G 4-4T01R-471G 125 51 340 Polyurethane Delrin 4-5T01S-401C 4-5T01R-401C 165 108 Roller 4-5T01S-401E 4-5T01R-401E Double ball 4-5T01S-401G 4-5T01R-401G 450 Moldon Polyurethane (Iron Core) Double ball 4-5T01S-431G 4-5T01R-431G 450 Moldon Polyurethane (Aluminum Core) Double ball 4-5T01S-471G 4-5T01R-471G 150 51 410 Polyurethane Delrin 4-6T01S-401C 4-6T01R-401C 190 127 Roller 4-6T01S-401E 4-6T01R-401E Double ball 4-6T01S-401G 4-6T01R-401G 500 Moldon Polyurethane (Iron Core) Double ball 4-6T01S-431G 4-6T01R-431G 500 Moldon Polyurethane (Aluminum Core) Double ball 4-6T01S-471G 4-6T01R-471G 200 51 450 Polyurethane Delrin 4-8T01S-401C 4-8T01R-401C 240 165 Roller 4-8T01S-401E 4-8T01R-401E Double ball 4-8T01S-401G 4-8T01R-401G 540 Moldon Polyurethane (Iron Core) Double ball 4-8T01S-431G 4-8T01R-431G 540 Moldon Polyurethane (Aluminum Core) Double ball 4-8T01S-471G 4-8T01R-471G The thickness of base plate is 6mm. The diameter of the mounting hole is 11.2mm. It can be equipped with direction lock, metal tread brake, metal side brake, metal double brake and nylon double brake. Polyurethane wheels are widely used in industrial automation equipment. Carsun full range of products can meet the specific requirements and hardness under different working conditions. The products are made of high-tech polyurethane materials independently developed and designed by our company, imported raw materials and independently developed formulas. They have excellent properties such as high resilience, good dynamic performance and impact resistance, high wear resistance, low internal heat generation and good high temperature resistance.