Plastic gear materials:
    Polyoxymethylene (POM) as a gear most common and most important engineering thermoplastics, has 40 years of history. Since the hygroscopic POM special small gear ensures long dimensional stability and resistance to fatigue in a broader temperature range, corrosion resistance and other excellent performance characteristics and self-lubricating, plastic gears has been the first choice for engineering plastics.
   Nylon (PA66 and PA46, etc.) with good toughness and durability, etc., is another common plastic gears. But nylon has a strong moisture absorption will cause the plastic parts and dimensional change. Prisoners Here, nylon is not suitable for precise transmission gear.
Polycarbonate (PC) has excellent impact resistance and weather resistance, high hardness, shrinkage and dimensional stability and other advantages. However, self-lubricating properties of polycarbonate, chemical resistance and poor fatigue resistance. This material is colorless and transparent, easy coloring, plastic appearance, instrumentation precision gears and decorations, and there are still many applications.
   Polyethylene terephthalate phthalate p-phenylenediamine (PPA) has a high heat distortion stability, it can be high, wide temperature range and high humidity environment to maintain its superior mechanical strength, hardness, fatigue resistance and creep resistance variable performance. Able in some PA6, PA "gear can not withstand high temperatures, high humidity and other conditions, still has a working plastic gear

   Polyester (PBT) can be molded surface is very smooth gear, modified plastic parts unfilled maximum operating temperature up to 150 ° 0, glass fiber reinforced plastic parts operating temperatures up to 170 ° C. Good transmission performance gear, the gear is also often used in structural parts.
   Liquid crystal polymer (LCP) has long been successfully used in injection molding fine small number of special plastic gears. This gear has good dimensional stability, high chemical resistance and low mold shrinkage characteristics. The material commonly used in micro-molded plastic gears watch.
   ABS and LDPE materials can not usually meet the lubrication properties of plastic gears, fatigue resistance, dimensional stability and heat resistance, creep resistance, chemical resistance and other performance requirements. But also for a variety of toys and other low-grade sports gear in the field.
   The thermoplastic elastomer molding gear flexibility is especially good, it can well absorb shock loads generated by the drive, low gear noise, run more smoothly. Copolymer thermoplastic elastomers commonly used vinegar molded low-power high-speed transmission gear, the gear is running even if there is some variations and deviations, also possible to reduce operating noise.
   Polyphenylene sulfide (PPS) with high hardness, dimensional stability, resistance to fatigue and chemical resistance characteristics as well as long-term use temperature up to 200 ℃. PPS gear has been extended to cars, special fluid pumps and other gear working conditions very demanding applications.
   Polyether ether ketone (PEEK 450G) and the modified polymer has been successfully applied load ten large power transmission gear in high-performance plastics. Such material has a high temperature, high mechanical properties, abrasion and chemical corrosion resistance and other characteristics, is the top gear molded plastic.