The Bearing Heater in the Motor Shaft Based on Induction and Temperature Control Theory

Abstract

The objective of this quasi experimental research was to investigate the bearing heater in the motor shaft based on induction and temperature control theory. The research tool for this study was the  bearing heater in the motor shaft created by the researchersand an evaluation form was used to assess the machine performance.  Questionnaires were employed to obtain experts’ satisfaction on the machine efficiency in three aspects - structure, usability and commerce. The results  showed that the machine can control temperature between 0 - 110 °C  and  heat bearings by electric induction. There are three sizes of bearings.  A 29.51 millimeter diameter bearing has  an extension rate of 0.25 millimeter and the average expansion rate/temperature  of 0.24 millimeter. The 34.47 millimeter diameter bearing has an extension rate of 0.29 millimeter and the average expansion rate/temperature  of 0.28 millimeter, and the 39.51 millimeter diameter bearing has an extension rate of 0.31 millimeter and the average expansion rate/temperature of 0.32 millimeter.  The temperature of 110 °C was applied to all sizes of bearings. The  bearing heater in the motor shaft based on induction and temperature control theory has an average efficiency for the structure  at 4.33, the usability  at 4.40, and the  commerce at 4.33. The total average efficiency  of all aspects was highly observed at 4.35.