Japan Seiko Global Volume Wheel Bearings
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When cold-forging the hub axle, the processing pressure needs to increase. Nippon Seiko solved this problem by developing a new side extrusion method, which was publicized in 2007. Afterwards, Nippon Seiko recommended this method to car manufacturers.
With the cold forging method, the energy consumption when forging the hub axle can be reduced by about 70%. The energy consumption when manufacturing the entire bearing is reduced by 27%. In addition, it can also reduce the machining allowance of machining and reduce the amount of steel by 20 to 30%. From the entire bearing is reduced by 10 to 15%. In cold forging, work hardening effects are obtained and surface finish is increased. Japanese Seiko used this to reduce the weight of the entire bearing by 5%.