Design and Analysis: Still based on empirical analogy design, the study of load analysis and load spectrum is almost blank. One of the difficulties in the technology is for the spindle bearing requirements of the fault-free operation of more than 13 * 104h, and has more than 95% of the reliability; gearbox bearings for the high damage rate of high load capacity design.
Material: Different parts of the bearing adopt different materials and heat treatment, such as increasing the yaw and 40CrMo steel temperature of the pitch bearing (ambient temperature -40 °C ∽ -30 °C, bearing working temperature is about -20 °C) impact energy and other mechanics Performance heat treatment methods, surface induction quenched hardened layer depth, surface hardness, soft band width and surface crack control; growth gear bearing equivalent to foreign STF, HTF steel development and control of the best retained austenite content Research; spindle bearing in the domestic vacuum degassing steel quality there is still a certain gap, the use of electroslag remelting carburizing steel ZG20Cr2Ni4A manufacturing.
Anti-corrosion and sealing.
Yaw and pitch bearing special clearance requirements.
Yaw and pitch bearing raceway grinding.
High-precision machining of spindle bearings and transmission bearings.
Improved design of cages for variator bearings.
Testing and so on.
