The main function of reducer / gearbox is shifting and increasing torque so as to output large torque. As the gearbox / reducer generally operate uninterruptedly and continuously, the bearing inside it requires a high reliability, long life and low noise. According to the application characteristics of gearbox industry, MBY Bearings has developed a plurality of series of reducer / gearbox bearings by selecting more pure bearing steels and improving the machining precision and other measures.