Acetal and nylon resins account for the vast majority of plastic gears in use today, largely due to their low wear/low friction capabilities and chemical resistance. Celanese offers an extensive portfolio of engineering polymers that also deliver:
We can make material recommendations based on design and testing capabilities, including finite element analysis, injection molding simulation, and gear testing. We also offer advanced technical support from design through molding and maintain a global network of interlinked technical service laboratories.
Zytel® nylon resin (PA) – The first engineering polymer for gears, Zytel® can be modified to optimize performance and is frequently used in conjunction with other materials to reduce gear noise and wear. It offers:
Zytel® HTN high-performance polyamide resin – Compared with other nylons, Zytel® HTN exhibits enhanced retention of mechanical properties with exposure to moisture, chemicals, and elevated temperatures. Grades are available in both PPA and PA types.
Minlon® mineral-reinforced nylon resin (PA) – Minlon® offers better strength and stiffness than unreinforced nylon. Compared with glass-reinforced nylon, Minlon® exhibits less potential for part warpage.
Hytrel® thermoplastic polyester elastomer (TPC-ET) – Hytrel® provides extra tough teeth for gears subject to extreme shock or when mesh noise reduction is required. Often, just one gear made of Hytrel® is enough to reduce noise in an entire gear train.
Crastin® PBT and Rynite® PET – We recommend Crastin® and Rynite® for strong, stiff gears in environments where a high degree of dimensional stability is required. The broad thermoplastic polyester product offering allows a range of service temperature requirements to be met.