Parts, Machinery and Tools (West Exhibition Hall)

NSK

NSK Develops High-Reliability, Low-Torque Ball Bearings for Continuously Variable Transmissions
There is demand to develop CVTs that offer even greater efficiency, with global prices for crude oil expected to rise and in order to meet tighter fuel efficiency standards. In addition, transmission oils are expected to become lower in viscosity and offer lean lubrication resistancein pursuit of better fuel efficiency, which will in turn necessitate bearings with higher reliability.
　The new bearings build on proprietary expertise that NSK has developed in the areas of special heat treatment, creep prevention, and bearing design, and incorporate a fiber-reinforced plastic cage to deliver two-and-a-half times the life of existing bearings.
　The use of a fiber-reinforced plastic cage reduces the agitation resistance of lubrication oil by as much as 30%, without significantly changing the rated capacity or size of the bearing.

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