How to detect the miniature ball bearing paired parts

Due to the accuracy of precision miniature ball bearing itself within the 1 mu m, therefore require matching parts ( Shaft, bearing and end cover, collar, etc. ) Have high dimensional accuracy and shape accuracy, especially fitting surface accuracy to control inside and bearing the same level, it is crucial, and also the most easily overlooked. Must also pay attention to the matching precision miniature ball bearing parts if not meet the above requirements, often makes precision bearing in times larger than the original bearing error occurred after installation, even more than 10 times error, completely not be precision bearing, the reason is that the error of the matching part is often not simply by adding up the error of the bearing, but added in different multiples enlarged. The determination of miniature ball bearings size parameters according to the requirement is different. Parameter is different also, when the size of the bearing parameters, we want to begin from multiple angles. Below: we are from different angles to tell you about on many occasions, miniature ball bearing inner hole size is limited by the structure of the machine or device specific. Regardless of the working life, the static load factor of safety and economy whether meet the requirements, before finally selected bearing the rest of the size and structure, all must go through dimension calculus. The calculus includes compared with its load bearing the actual load capacity. Miniature ball bearing static load refers to the bearing load is stationary (after No relative movement between inside and outside the circle) Or rotate speed is very low. In this case, the calculus of raceway and rolling body safety coefficient of excess plastic deformation. Most bearing dynamic load, inside and outside the circle do relative movement, size calculation and checking of raceway and rolling body early fatigue damage factor of safety. In fact, the parameters of miniature ball bearings are with types, functions and USES. You must pay attention to these problems.