滚动轴承内外圈的固定与锁紧方式有哪些

2025-03-16 05:49:41
推荐回答(1个)
回答1:

首先要清楚,你所选择的轴承使用的特点,如,能够承载力的方向,能否调心,是否需要预紧力,等。最后,你要想象一下,如果你“用力”拔和推这个轴,能否拔出和推出这根轴。如果能的话,那么轴承定位、固定就有问题;如果不能,就说明轴承定位可靠。用这个“观点”逐个分析你上述轴承内外圈固定的方式,就能够自行找出答案。
上述的用“想象”的判断,可以明确两点。一是轴所受到的轴向力,均会通过轴承传到箱体壁上(如果有轴向力的话);二是轴在轴向上有可靠的轴向定位。
除了止推轴承外,其它形式的轴承就是承受径向力的,所以,就不用考虑径向问题了(指的是定位、固定,不是承载力啊)
至于“滚动轴承何时完全固定(四个方向),何时不完全固定(两个方向)问题”,要看具体结构设计情况。如果,轴是承受轴向力的,一般只能采用“不完全固定(两个方向)”;另外,如果,轴的两端,轴承“大小”一致,也多采取这种固定方式。如果,轴不承受轴向力,或者轴向力很小,而因为传动布局的关系(如,齿轮的排布),某个轴承的支撑反力很大,因而需要选取大容量的轴承(径向、宽度,尺寸都大些),在这个“大容量轴承”处,采用“完全固定(四个方向)”的定位方式,其效果,就比采取“不完全固定(两个方向)”的方式,好许多。毕竟大轴承承受轴向力的能力更大些。 希望能对你有所帮助。

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