The characteristics of wide speed range, high starting torque, high power density and high efficiency of automobile drive motors put forward higher requirements on the bearings' high speed, high and low temperature, durability, stability and reliability. The maximum speed of automobile motor bearings can reach 20,000 rpm, and the Dmn value of bearings can reach 1 million, which is much higher than the speed of ordinary industrial motors. Its operating temperature range is -40 to 150 ℃. The grease is required to have excellent low temperature performance, high temperature resistance, vibration resistance, energy saving and high efficiency and long service life. In order to ensure the comfort ride and the quietness, the vibration and noise level of the gearbox bearing should be low. At the same time, it needs to have a certain degree of anti-electrolytic corrosion. Due to the unbalance of the windings, there is a potential difference between the rotors, forming currents, and the current leakage caused by the inverter's high-frequency voltage may cause the bearings to produce electrolytic corrosion and lead to the failure of the bearings.

High rotation speed

Excellent sealing and lubrication performance

Low noise

low torque

Electrical erosion resistance

Long service life