Description : The plastic material commonly used for making gear wheels is – (1) Polyesters (2) Nylons (3) Bakelit (4) Polystyrene
Last Answer : (2) Nylons Explanation: Popular materials for plastic gears are acetal resins such as DELRIN, Duracon M90; nylon resins such as ZYTEL, NYLATRON, MC901 and acetal copolymers such as ... vary with regard to strength, rigidity, dimensional stability, lubrication requirements, moisture absorption, etc.