High Temperature Resistant & Corrosion Resistant Plastic Bearings

PEEK/PI plastic bearings (high temperature resistant plastic bearings): As emerging engineering plastic materials, PEEK and PI have been proven to be the best among all known engineering plastics. It has the best mechanical strength, dimensional stability and high temperature resistance, among which PEEK has the best long-term use temperature. reaches 260 degrees Celsius, and the long-term use temperature of PI is as high as 300 degrees Celsius, and it has excellent corrosion resistance. Corrosion performance, it can still operate freely in medium-strength acid and alkali corrosion environments, so it is generally used It is suitable for manufacturing bearings that need to operate precisely in relatively harsh environments. Its disadvantage is that the material itself The body is relatively expensive, so the use cost is high. Generally, PEEK or PI is used as material for the inner and outer rings to ensure The holder material is PTFE, PEEK or PI, and the balls are generally ZrO2 or Si3N4 ceramic balls.

PVDF/PTEE plastic bearings (corrosion-resistant plastic bearings): As the most typical varieties of fluoroplastics, PTEE and PVDF have the best corrosion resistance. Among them, PTEE has the best corrosion resistance among all known engineering plastics and can be used in all Some strong acid and alkali situations include HF, fuming sulfuric acid, nitric acid (more than 98%), etc., and have It has good high-temperature performance. PTEE is proven to be used at high temperatures of 180 degrees C, and PVDF can also be used. 150 degrees C, but the PTEE material has extremely low strength, poor dimensional stability, and large temperature changes. In comparison, PVDF has better overall performance. Generally, PTEE or PTEE is used as the material for the inner and outer rings. PVDF, the cage material is PTEE or PVDF, and the balls are just ordinary glass balls or ceramic balls.