Abstract

Polymer gears are currently drawing more attention in comparison with metal gears in various industrial applications due to their capabilities such as noiseless operations, low inertia, self-lubrication, and non-corrosive in nature. However, some drawbacks are also associated with these gears such as high torque and temperature limitations. Gear tooth surface temperature generation is not only depending on the torque, but it also depends on the materials of gear pair. Transmission efficiency (TE) of polymer gears very much depends on the gear tooth surface temperature. In this work, glass Polyamide 66 (PA66) gears are manufactured through the conventional technique, i.e., injection molding. Transmission efficiency is investigated for PA66 to PA66 gear pairs and PA66 to steel gear pairs. Fabricated gears are tested at various speeds of 600, 800, 1000, and 1200 rpm and different torque values of 0.8, 1.2, 1.6, and 2 Nm for investigating the TE. Test gears are made to run up to 1.2 × 105 rotations during each experiment. Result finding shows that PA66 to steel gear pairs have high transmission efficiency as compared to PA66 to PA66 gear pairs.

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