May 20,2019

Single wheel material

There are various materials for manufacturing single wheels, the most common materials are: nylon, polypropylene, polyurethane, rubber, cast iron, etc. 1. Polypropylene wheel, commonly known as PP wheel. Polypropylene is a thermoplastic material known for its impact resistance, corrosion resistance, abrasion resistance, non-marking, non-staining, and non-toxic properties. It is an odorless, moisture-resistant material. Polypropylene can resist many corrosive substances and does not contain strong oxidizers or hydrogen halides. The applicable temperature range is -20°C to +60°C, but the load-bearing capacity decreases when the ambient temperature exceeds +30°C. 2. Nylon wheel. Nylon is a thermoplastic plastic. It is impact-resistant, non-marking, non-staining, corrosion-resistant, highly abrasion-resistant, and odorless. It is hygienic and resistant to many corrosive substances, but not resistant to mineral acids, oxidizers, chlorinated hydrocarbons, and heavy metal salt solutions. Its rolling resistance is very low, making it suitable for use on rough or contaminated surfaces. The color is natural white or black. Its performance improves after fully absorbing moisture. The applicable temperature range for nylon is -45°C to +130°C, with short-term use allowed at higher temperatures. However, the load-bearing capacity decreases in environments above +35°C. 3. Polyurethane wheel. Polyurethane (TPU) is a thermoplastic polyurethane. It uses polypropylene or nylon as the wheel core, with polyurethane injection molded on the outer edge of the wheel core to form the wheel surface. It has excellent properties such as protecting the floor, absorbing vibrations, being non-marking, non-staining, elastic, abrasion-resistant, and resistant to many corrosive substances; it can also withstand hot water and steam under specific conditions. Its rolling resistance is low, making it suitable for use on various surfaces. The color can be customized. The applicable temperature range for thermoplastic polyurethane single wheels is -45°C to +90°C, with reduced load-bearing capacity in environments above +35°C. The hardness is generally 92°±3°, 94°±3°, or 98°±2° Shore A. 4. Cast polyurethane (CPU) elastomer wheel. Cast polyurethane elastomer (CPU) is a thermosetting polyurethane elastomer formed through a chemical reaction, based on polyester polyols, diisocyanates, and ethylene glycol. It uses iron or aluminum cores as the wheel core, with polyurethane cast on the outer edge of the wheel core, forming the wheel surface through high-temperature curing. This wheel is very protective of the floor, absorbs vibrations, is non-marking, non-staining, has excellent abrasion resistance, good elasticity, and is resistant to many corrosive substances, as well as UV resistant, but not resistant to hot water, steam, humid air, and aromatic solvents. Additionally, it has very high operational comfort, low rolling resistance, and generates little heat under dynamic loads. The color is white. The applicable temperature range for cast polyurethane wheels is -30°C to +70°C, with a short-term maximum of +90°C. The best rigidity is at temperatures below -10°C. The hardness is 75°+5° Shore A. 5. Cast polyurethane (CPU) wheel. Cast polyurethane (CPU) is a thermosetting polyurethane elastomer formed through a chemical reaction, based on polyester polyols, diisocyanates, and ethylene glycol. It protects the floor, is non-marking, non-staining, highly abrasion-resistant, elastic, and resistant to many corrosive substances, as well as UV resistant. Additionally, it has very low permanent deformation, low rolling resistance, generates little heat under dynamic loads, and has hydrolysis resistance, making it particularly suitable for higher speeds up to 16 km/h. The color can be customized. The applicable temperature range for cast polyurethane wheels is -45°C to +90°C, with a short-term maximum of +90°C. 6. Cast nylon (MC) wheel. Cast nylon (MC) is a thermosetting plastic formed through a chemical reaction. It is impact-resistant, non-marking, non-staining, corrosion-resistant, highly abrasion-resistant, and odorless. It is hygienic and resistant to many corrosive substances, but not resistant to mineral acids, oxidizers, chlorinated hydrocarbons, and heavy metal salt solutions. In terms of load-bearing capacity, tensile strength, elasticity, deformation stability, and moisture absorption, cast nylon (MC) performs better than injection-molded nylon. Its rolling resistance is very low. The color is natural. The applicable temperature range for cast nylon (MC) is -45°C to +130°C, with short-term use allowed at higher temperatures. The load-bearing capacity decreases in environments above +35°C. 7. Foam polyurethane (PUE) wheel. Foam polyurethane (PUE), also known as microporous polyurethane, is a block polymer. Foam polyurethane wheels are highly elastic wheels with physical properties that exceed all other microporous elastomers of the same density. They have low density, lightweight, easy to deform, easy to mold, impact-resistant, good sound absorption and energy absorption, high load-bearing capacity, high elasticity, good fold resistance, low pressure resistance, wear resistance, tear resistance, radiation resistance, and shock-absorbing properties. Their excellent and unique comprehensive performance is not found in ordinary plastics and rubbers. They also have a wide hardness range from Shore A 10 to 100. These characteristics make them very suitable as materials for casters. 8. Solid rubber tire. Solid rubber tires are made with iron, aluminum, steel, or plastic cores, wrapped in high-quality rubber on the outer edge of the wheel core, and formed through high-temperature vulcanization. They have excellent properties such as vibration absorption, impact resistance, high elasticity, very protective of the floor, and resistant to many corrosive substances, but not resistant to oil corrosion. The color is black, gray, or dark gray. The applicable temperature range for solid rubber tires is -45°C to +90°C. The hardness is 80°+5°/-10° Shore A. 9. Inflatable wheel. Inflatable wheels consist of inflatable tires and rubber outer tires, both made of rubber. They are particularly protective of the floor, absorb vibrations, and are resistant to many corrosive substances, but not resistant to oil corrosion. Additionally, they provide high operational comfort and very low rolling resistance in poor ground conditions. The more layers of tires, the higher the strength. The maximum tire pressure and load-bearing capacity are determined by the strength of the tire body. To ensure optimal use and achieve longevity, it is essential to strictly adhere to and regularly check the tire pressures listed in the table. Tire pressures that are too high or too low can damage or destroy the tires. The color is black. The applicable temperature range for inflatable tires is -30°C to +50°C. The size of the single wheel or tire is suitable for new tires that are not under load, with slight changes in width and diameter during operation. 10. Soft rubber wheel. Soft rubber wheels are based on a specially developed high-elasticity rubber compound. They are particularly protective of the floor, absorb vibrations, and are resistant to many corrosive substances, but not resistant to oil corrosion.