对于只有冲压外圈的36941/14滚针轴承,设计标准规定其外径公差为±12μm,工艺上很难达到。根据对部分国内外轴承的实测与计算,建议该轴承外径上偏差为+65μm,下偏差为-6μm,该公差相当于IT10级,冷热加工工艺可达到上述加工精度要求。附图1幅,表3个。 For only 36941/14 needle roller bearings punched outer ring, the design standards for its diameter tolerance of ± 12μm, the process is difficult to achieve. According to the measurement and calculation of some domestic and foreign bearings, it is suggested that the deviation of the outer diameter of the bearing is + 65μm and the deviation of the lower level is -6μm. The tolerance is equivalent to IT10 level, and the hot and cold processing technology can meet the above machining accuracy requirements. Figure 1, Table 3.