Synthesis and Characterization of Nano-grease for Automotive Wheel Bearing Application

The maintenance of various automotive systems has been increased due to improper road conditions in developing countries which results in shorter lifespan of the automotive components like wheel bearing and also discomfort ride of a vehicle which further increases the maintenance and running cost. The problem with friction and wear of various automotive systems like bearing with their noisy operation is becoming more prominent. Therefore, there is need of lubricating greases which decreases friction, wear and noisy operation while maintaining the vehicle. Grease is an important element in the automotive wheel bearing lubrication. Considering emerging need for high load-carrying capacity and viscosity, a new kind of bearing lubricants is required. Nano-grease has the potential to fulfil the emerging needs of lubrication. Now days, there is scope and also challenge to develop new grease for specific application. In this paper, samples of nano-grease are synthesized and characterized for thermal, tribological and rheological properties. The characterization results of nano-grease are compared with conventional greases and suitable nano-grease has been suggested for automotive wheel bearing application.