Contact Ball Bearing On Rolling Resistance

Abstract

The bearing is a machine element that influences the rolling resistance value, so a rolling resistance test tool needs to be designed to facilitate the testing process. In this study, testing was carried out using single row angular contact ball bearing types (7200, 7201) and double row angular contact ball bearings (5200, 5201), which were tested with variations of 290 rpm, 310 rpm, and 330 rpm. This study aims to determine the effect of flywheel loads and rotation variations on rolling resistance so that researchers can evaluate the effect of the type of bearing in accordance with the needs of the electric car to be studied. From the results obtained, the smallest rolling resistance force occurs in the type of single row angular contact ball bearing (7201) with 290 rpm rotation obtained by 0.6531 N and the largest rolling resistance force occurs in single row angular contact ball bearing (7200) with rotation 330 rpm of 1.2340 N. From the four types of bearings above that the influence of the contact area also affects the value of the rolling resistance force. The greater the contact area of the bearing, the value of the rolling resistance will increase. In the angular contact ball bearing type, the greatest rolling resistance force is obtained by the double row bearing type (5201). This is because the double row bearing type (5201) has a greater contact area than the single row bearing type (7200).