The inside diameter of my bearing is 12mm. Now I want to work on a round shaft so that it can fit into the bearing hole, and there is almost no pulsation in the radial direction. Then how should the shaft be designed? The axle diameter is just 12mm Or a little smaller than 12mm? How much smaller?Thank you for your answer, my bearings are NSK, the accuracy level is P4, diameter 12, outer diameter 32, then how should I design the shaft? And how to design the fixed seat (sleeve, bearing) of the bearing?
Your bearing is 6201, according to the light load (so small things will not be used in place of large load), shaft to rotate, so after the query "mechanical design manual" bearing with the content, size and tolerance can have shaft should be 12h5 (difference 0, under -0.008). Bearing seat to go to the market, the store owner knows.
The specific reference to the mechanical design manual, there are examples to follow the steps above to do down, the calculation process has a 3,4 page, but also to calculate what the shaft strength, but not so easy to design, and your condition is not good, you should also give the work work strength of the shaft, and is expected to life and work in different intensity of life is not the same, so the design steps are not the same, you still buy this book to see it, this question is not clear.
Axis of nominal diameter 10mm, size tolerance decides what you choose to look at the accuracy level of general level 6 or 7 grade precision, tolerance zone h, which is 12h6 or 12h7, the tolerance is not tight, you chose to use the occasion.
