In the present scenario, polymers are extensively used for manufacturing of sliding components (against metals or other materials) such as gears, bearings, cams, rollers in conveyors etc. which undergo wear and tear. Thus the study of wear behaviour of polymers becomes necessary in order to enhance the life of such components. In the present research work, the adhesive wear characteristics of crystalline polymer Polyacetal (Polyoxymethylene-POM) and semi-crystalline polymer such as Nylon 6, Nylon 66 (aliphatic polyamides) were investigated. Polymers considered for this study are potential candidate materials for rollers in hybrid chains in food processing industry, medical equipments etc. Sliding wear tests were carried out under dry conditions using a pin- on-disc (ASTM G99) arrangement. The wear tests were performed against a mild steel disc (HRB 67) at room temperature under various loads (60, 80, 100N) and sliding speeds (1.8, 2.3, 2.8m/s). Cylindrical shaped polymers of 25 mm diameter were used for the wear tests. Among the three polymers, Polyacetal was observed the least wear rate and coefficient of friction irrespective of load and speed because of its crystalline nature. Nylon 6 exhibits higher frictional coefficient at higher sliding velocity. Frictional heating and subsequent local melting of the polymer apparently play a role on the wear of the polymers. © 2014 Sphinx Knowledge House. All rights reserved.