2022 August-P4 Large machine tool spindle bearings from ZWZ with leading technology were successfully produced
A few days ago, the bearing supporting the main shaft developed by ZWZ Group for the 4-meter vertical lathe table was successfully produced and passed the customer's acceptance. This is the largest thrust cylindrical roller bearing produced by ZWZ Group for machine tools, with an inner diameter of 2030mm and a working line speed of 7m/s. The product design technology is leading domestically and successfully replaced imports.
According to Tang Lixuan, director of the Precision Bearing Research Institute of ZWZ Group, the overall accuracy of the bearing has reached P4 level. Through the continuous lubrication design of the internal circulation of the cage, the low sliding resistance and high rotation stability of the bearing under high-speed rotation conditions are realized, which effectively overcomes the The inherent defects of thrust cylindrical roller bearings are easy to slip and heat, and are easy to get stuck.
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