The third generation wheel hub bearing manufacturing process and advantages

You may know, automobile wheel hub bearing four generation of bearing, the most widely used the third generation wheel hub bearing, it adopted the bearing unit and the match the ABS brake system, bearing unit inside and outside the circle are all in the flange and within the inner ring with flanges bolted on the drive shaft, the outer flange to the bearing installed together. The third generation wheel hub bearing manufacturing process on the market at present, bearing manufacturers main processing technological process is divided into two kinds: one kind is turning machining is mainly focused on the workpiece before heat treatment; The other is a cutting process are mainly distributed in the workpiece are coarse car before heat treatment process and heat treatment after finish turning process. 1, turning process is mainly focused on the workpiece before heat treatment process for: this kind of machining technology advantage is in front of the high frequency quenching process can be unified in automatic production line processing, shorten the processing time, improve the processing efficiency. Defect is high frequency quenching result in some position during grinding surface may be tiny deformation, thus affecting the channel grinding precision and the degree of bolt hole position, is not conducive to the stability of the bearing unit operation. 2, turning process are mainly distributed in the workpiece are coarse car before heat treatment process and heat treatment after finish turning process of technological process is: the processing technology advantage is effective to avoid the influence of the localization of the three high frequency quenching, guarantee the grinding accuracy, and raised the bolt hole position degrees, and then increase the stability and reliability. Drawback is the machining process is more, scattered processing equipment, high investment cost.