Eliminating excessive drill noise (taking up armature slack) by brassing the bearing seat to take up slack

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Mihanabzar

Published on Aug 20, 2024
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In electric tools that use a universal motor, the armature, which is located inside the cushion and has two supports, which are mostly bearings (roller bearings and bushings are also used), is connected to the shell, which is mostly made of plastic. Due to the stresses applied to the supports, the bearings are subject to wear and tear at the location of the bearings. Since the armature is located inside the cushion and the distance between the metal shell of the armature and the cushion is very small (about one to two millimeters), and this movement of the supports due to the wear of the shell will cause the armature shell to engage with the cushion. This will cause friction and heat generation, and ultimately cause the motor to burn out. One of the solutions is to replace the bearings, which we did in this video. #ميهن_أبزار #mihanabzar

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