The hottest NSK has developed a special low torque

2022-08-11
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NSK has developed low torque ball bearings for hybrid electric vehicles

NSK has developed low torque ball bearings for hybrid electric vehicles

China engineering machinery information

Guide: NSK bearing company has developed an average value bearing for low torque ball bearings for hybrid electric vehicles that reduces friction losses by 50 ~ 65% compared with the past. NSK first reduced the number of bearing balls from 22 ~ 23 in the standard design to 16 with the help of analysis technology. In addition to increasing the radial clearance, it is also better to confirm that the brittle transition temperature is lower than the brittle fracture temperature of the structure, which turns the ball

NSK bearing company has developed a "special low torque ball bearing for hybrid electric vehicles" with friction loss reduced by 50 ~ 65% compared with the past

nsk first reduced the number of bearing balls from 22 ~ 23 in the standard design to 16 with the help of analysis technology. In addition to increasing the radial clearance, the ball diameter and bearing groove size are also optimized. The "accuracy" of the control is determined by the hardware electrical control, which reduces the loss of rolling friction

by adopting a shape that can reduce the stress during assembly, the assembly performance is ensured. The torque loss on a single cage is reduced by 30 ~ 40%, and the torque loss on the whole bearing is reduced by 50 ~ 65%. The company speculates that Prius has curbed the excessive growth of production capacity in mode 10 and mode 15, and the fuel efficiency has increased from 35.5km/l to 38.0km/l. About 1 ~ 2% of the increased fuel efficiency is obtained by using this bearing

the cage of NSK power car special bearing is made of nylon 46, which reduces the sliding friction between the ball and the cage. In addition, the concave convex shape in the rotation direction is eliminated, thereby reducing the mixing loss

the design and application of this kind of special bearing for power vehicles are very different from the ordinary NSK bearing nu224em bearing. This product has been used in the internal gear support with four functions in Toyota's new "Prius" hybrid system. As the diameter of the internal gear becomes larger, it is easy to increase the friction loss

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