General bearing operating conditions

Update:25-05-2019
Summary:

Here are some suggestions: First, the tolerance fit: th […]

Here are some suggestions:

First, the tolerance fit: the general bearing, the inner ring rotates, and the fit is tight relative to the outer ring. The outer ring is loose. The reason is that the outer ring mainly plays a supporting role and does not have a large rotating force. (Microscopically, the outer ring will be relatively creepy, but not much.) The situation you said is just the opposite, that is, the force of the two bearing rings is just the opposite. Therefore, the tolerance fit is reversed. The active rotation of the ring fits will be relatively tight.

Second, clearance selection: basically the choice of clearance is related to temperature and tolerance. If you just reverse the tightness of your outer ring tolerance, then the effect before and after the change is not particularly large (but certainly, can not be ignored in precision occasions), the general situation can be considered and the general bearing, due to tolerances The same change. As for the temperature, it does not matter which ring rotation is completely concerned, mainly depending on the heat source of your outside world. So there is not much change. In short, the above can basically follow the choices of the past.

Third, lubrication, be careful, if it is a sealed bearing, please do not use the dust cover, he will definitely leak oil. To choose a rubber seal. If it is a general open bearing, please note that the relubrication interval should be adjusted to half of the past.