Plastic bearings can be divided into two categories: rolling and sliding. The distinction lies in the way they operate regarding friction. The rolling type's friction is mainly related to manufacturing precision, while sliding bearings are associated with the material of the sliding surface.
HIY Bearings' plastic bearings are precision-engineered using materials like PE, POM, PP, PTFE, PVDF, PEEK, among others, for the inner and outer rings. They can be paired with materials such as Si3N4 ceramic balls, ZrO2 ceramic balls, glass, stainless steel balls, and more, suitable for precise, corrosion-resistant, and oil-free lubrication environments. The application of these new materials brings forth entirely new possibilities for bearing performance and industrial equipment applications.
2.Various Material Characteristics of Plastic Bearings
The characteristics of plastic bearings encompass a wide spectrum. Materials like POM and PA offer excellent mechanical strength and wear resistance, suitable for high-temperature environments (approximately -55°C to 100°C). PP, HDPE, and UPE are suitable for most acidic and alkaline environments, providing self-lubricating effects without oil. PTFE and PVDF exhibit optimal resistance to chemicals. PEEK and PI represent new-age engineering plastics; PEEK sustains long-term usage temperatures up to 260°C, while PI goes even higher to 300°C. Both possess outstanding corrosion resistance, allowing operation in more complex acidic and alkaline environments.
Additionally, PEEK boasts extremely high temperature stability, along with high rigidity and hardness. PTFE similarly offers chemical corrosion resistance, low friction coefficients, and excellent electrical insulation properties. HDPE has good electrical insulation and is easy to weld. The working temperature of HDPE ranges from -50°C to +90°C. PVDF can function within temperatures ranging from -60°C to +150°C.
3.Applications of Various Materials in Plastic Bearings
Plastic bearings have diverse applications：
PEEK is widely used in piston seal gaskets, sliding bearings, and bearing sleeves.
POM finds application in bearing sleeve rings, gears, screws, and more.
PP is utilized in pump and valve components, electroplating processes, toys, and dentistry.
PTFE sees extensive use in chemical, petroleum, food, electronics, and mechanical fields.
HDPE is suitable for hot water pipelines, medical components, and more.
PVDF plays a crucial role in chemical, medical, and marine operations.
