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一、问题的提出EQ140型5吨货车的变速器中间轴后端装用了50308球轴承(见图1)。从我厂1980年公布的零部件寿命情况可知,50308球轴承的损坏比率是很高的(见表1)。
First, the issue put forward EQ140 5-ton truck gearbox rear axle equipped with 50,308 ball bearings (see Figure 1). From our plant in 1980 published parts life conditions, 50308 ball bearing damage ratio is very high (see Table 1).