An electric motor usually has several anomalies due to overwork and one of these anomalies is the abnormal warming in service. This problem can be caused by the fact that the electric motor is working with overload, the coolant volume is not sufficient to present a short circuit in the armature windings or field, or even the inspection cover fan side is open.
To combat this abnormal heating problem in the electric motor will need: performing voltage and current test for the overload is eliminated; then you must still check in what sense is there the rotation of the ventilation and clean air ducts and filters, but if it takes is time to replace the filters; it is also necessary to analyze the windings and welding points and perform the repair if necessary and finally close.
The electric motor can also be heated bearings so that it is not common and the reason for this problem may be caused by many factors and among them are: excess grease; wrong grease or in poor condition; speed or excessive load.
To this problem is solved, you need to remove excess grease, use the correct grease, replace the bearing or slow down or even remove the excessive load.