A thermoplastic composite material designed and developed for fabrication of nonmetallic composite spur gear. The composite is fabricated using Portland Pozzolanic Cement (PPC) as filler material into the polypropylene matrix followed by injection molding technique. However, geometrical structure of the developed product depends on the parameter like loading-unloading condition and temperature fluctuation that severely influence the material performance and shorten the product life. In the present work, the composite spur gear material is tested to evaluate its friction and wear characteristics in adhesive and abrasive wear modes. Weight loss due to wear of the composite gear is evaluated through direct measurement under a specific load and running condition. It is observed that the adhesive wear rate significantly reduced when the cement filler loading increases. This is because shear strength and surface energy of the composite material changes while toughness and hardness of the material improves due to strengthening by cement fillers. Keywords: Composite, spur gear, coefficient of friction, wear
