Experimental evaluation of temperature difference on needle roller bearing using different loads and grades of oil lubricant

Abstract

Needle roller bearings are mostly used in most of the rotating machines because of their accuracy and proper working operation. The temperature difference of bearing is the most important factor for rotating machines which should be as low as possible. In this paper, the experimental work has been performed on needle roller bearing with different loads (20, 40, 60, 80 and 100 N) applied on it and with six lubricants of different viscosity grades (ISO 10, 32, 46, 68, 100 and 120). It is found that the temperature of test bearing is increased with increasing of applied load in every oil lubricant and the temperature difference is decreased from ISO 10 oil lubricant to ISO120 oil lubricant. It is also found that the speed of shaft maintained constant for the oil lubricants of ISO 10 to ISO100 but the speed of shaft is decreased using oil lubricant of ISO 120 due to high frictional force.