Implementación de dos métodos para el montaje de rodamientos rígidos de bolas de 100 mm de diámetro externo mediante dilatación térmica para el laboratorio de mantenimiento correctivo

Abstract

Currently, in the Corrective Maintenance Laboratory of the Mechanics Faculty, there is a test bench for the assembly and disassembly of bearings. Therefore, the objective was to implement two methods for assembling rigid ball bearings with an external diameter of 100 mm through thermal expansion for the Corrective Maintenance Laboratory. For this, a thermal expansion methodology was used based on the construction of two inductive and resistive bearing heaters, designed and adapted to heat bearings and expand their internal diameter in a controlled and safe manner before installation. The induction bearing heater uses the magnetic field generated by the coil in the presence of the bearing to generate heat inside the bearing, distributing it evenly and safely, avoiding damage to the bearing. This device has temperature and time control systems, allowing the heating process to be adjusted according to the bearing manufacturer's specifications—the resistive heater results from transforming electrical energy into heat energy through electrical resistance. Subsequently, the heat is transferred from the resistance to the base and finally to the bearing. The result will be a table with temperature limits according to the external diameter of the bearing. Based on the tests carried out, it is found that the assembly of bearings through controlled thermal expansion presents multiple benefits compared to other assembly techniques since it avoids exposure of the bearing to various shocks, the assembly is quick, and it offers uniform heating of the bearing. It was concluded that these plans and guides strengthen the laboratory's ability to carry out future bearing assembly projects and tasks with high quality and safety standards.