Caster wheels involve numerous different material types, with the most common being nylon, polypropylene, polyurethane, rubber and cast iron.

1. Polypropylene Wheel Swivel Caster (PP Wheel)

Polypropylene is thermoplastic material known for its shock resistance, corrosion resistance, friction resistance, and its non-marking, non-staining, and non-toxic performance, as well as a material that is odorless and will not absorb moisture. Polypropylene can resist many corrosive substances, with the exclusion of strong oxidizers and halogen hydrogen compounds. The applicable temperature range is between -20℃ and +60℃, though the bearing capacity will decrease in ambient temperatures of more than +30℃.

2. Nylon Wheel Swivel Caster

Nylon is a thermoplastic material that is known for its corrosion and friction resistance, odorless and non-toxic structure, and its non-marking and non-staining performance. Nylon can resist numerous corrosive substances, however, it will not be resistant to chlorine hydrogen compounds or heavy metal salt solutions. Its applicable temperature range is between -45℃ and +130℃, making it applicable for short term use in high temperature environments. It should be noted however, that at ambient temperatures higher than +35℃, the bearing capacity will decrease.

3. Polyurethane Wheel Swivel Caster

Polyurethane (TPU) is a member of the thermoplastic polyurethane family. It protects the ground, and will absorb vibrations with a non-marking, non-staining process. TPU features an excellent friction and corrosion resistance, as well as an outstanding elasticity, making it suitable for use in numerous environment types. Customers can choose the colors of the polyurethane to match required uses, with an applicable temperature range between -45℃ and +90℃, though it should be noted that the bearing capacity decreases at ambient temperatures of higher than +35℃. The hardness is generally 92°±3°, 94°±3° or 98°±2° Shore A.

4. Casting Polyurethane (CPU) Elastomer Wheel Swivel Caster

Casting polyurethane elastomer (CPU) is a thermosetting polyurethane elastomer formed using a chemical reaction process. Wheels made using this material protect the ground, and have an excellent abrasion resistance, corrosion resistance and UC radiation resistance, as well as an outstanding elasticity. However, it should be noted that this material is not resistant to hot water, steam, wet, humid air or aromatic solvents. The applicable temperature range is between -30℃ and +70℃, with short periods at up to +90℃ for a short time. The rigidity of casting polyurethane elastomer is the best at an ambient temperature of below -10℃ and the hardness is 75°+5° Shore A.

5. Casting Polyurethane (CPU) Wheel Swivel Caster

Casting polyurethane (CPU) is a thermosetting polyurethane elastomer formed using a chemical reaction. It is particularly suitable for applications that reach a maximum speed of 16km/h, and customers can choose the colors based on their requirements. The application temperature ranges between -45℃ and +90℃, with short term usage reaching all the way to +90℃.

6. Casting Nylon (MC) Wheel Swivel Caster

Casting nylon (MC) is a thermosetting plastic formed using a chemical reaction, and is often better than injection nylon. It features a natural color and has a very low rolling resistance. The applicable temperature range of casting nylon is between -45℃ and +130℃, though it is worth noting that the bearing capacity will decrease at temperatures above +35℃.

7. Foam Polyurethane (PUE) Wheel Caster

Foam polyurethane (PUE), also known as microcellular polyurethane, features a great buffering effect when it is used in high strength and pressure applications, a property which is not normally available in plastic or rubber materials.

8. Solid Rubber Tire

The wheel surface of solid rubber tires is formed by wrapping high quality rubber around the outer rim of the wheel core, then exposing it to high temperature solid vulcanization processes. Solid rubber tires feature an outstanding shock absorption and impact resistance, excellent elasticity, as well as a great ground protection and erosion resistance. Our solid rubber tire color choices include black, grey or dark grey, with an applicable temperature range of -45℃ and +90℃ and a hardness of 80°+5°/-10° Shore A.

9. Pneumatic Wheel Caster

Pneumatic wheel casters include pneumatic tires and rubber tires, both of which are made using rubber. They protect the ground, and are especially suitable for poor ground conditions. The applicable temperature range is -30℃ and +50℃.

10. Soft Rubber Wheel Caster

Soft rubber wheel casters protect the ground, and are especially useful in bad ground conditions. The applicable temperature range is -30℃ and +80℃ with a hardness of 50°+5° Shore A.

11. Synthetic Rubber Wheel Caster

Synthetic rubber wheel casters are made of thermoplastic rubber elastomers (TPR), which has an excellent cushioning and shock absorption performance, the better to protect equipment, goods and the floor. Its performance is better than that of a cast iron core rubber wheel, and is ideal for ground environments where there is gravel or metal filings. The applicable temperature range is -45℃ and +60℃ with a hardness of 70°±3° Shore A.

12. Antistatic Synthetic Rubber Wheel Caster

Antistatic synthetic rubber wheel caster is made of thermoplastic rubber elastomer (TPE), and features a static resistant performance. The applicable temperature range is between -45℃ and +60℃ with a hardness of 70°±3° Shore A.

13. Cast Iron Wheel Caster

Cast iron wheel casters are a caster wheel made specifically of a rugged grey cast iron with a high bearing capacity. The applicable temperature range is between -45℃ and +500℃ with a hardness of 190-230HB.