Experimental Investigation & Analysis of Gear Oil for Power Loss and Oil Temperature in Helical Gearbox

Abstract

A gearbox is a set of gears for transmitting power from one rotating shaft to another. They are used in a
wide range of industrial, power plant, automotive and home machinery application. A gear heads are available in
different sizes, capacities and speed ratios. Mostly their main function is to convert the input provided by an electric
motor into an output of lower r.p.m and higher torque or high r.p.m and lower torque. This continuous transmission of
the torque in gearbox increase the wear and temperature between to rubbing surface of gear teeth due to friction. The
gear oil which is use to reduce this friction loss have high viscosity. This viscosity of gear oil will increase power losses
of gear box. So this work is consent for find out power loss for same viscosity index gear oil. For finding this power loss
in reduction helical gear box, three EP series gear lubricant oil (EP-90, EP-140 and EP-220) and one vegetable castor
oil is considered for experimentation and the input power of gear box, output power of gear box, motor current and
temperature of gear oil is considered as response parameter. From this study, finally conclude that Power loss of Caster
oil is less compared to other gear oil. The results of the experiments confirm with the existed CFD results.