Carrying the load bearing capacity calculation

Today, demands the right to use life, equivalent load, shaft speed and improve the reliability of any correction factor can be used to calculate with the required load bearing capacity.
Where: C = dynamic load rating required capacity,

    N = Shaft speed, r / min

    Rolling contact type θ = dimensionless index:

L = L required service life, h

P = bearing equivalent load, N

Point contact (ball bearings) or line contact (roller bearings). On ball bearings: θ = 3. 00,

On roller bearings: θ = 3.33.

Assume the role of force in the rolling surface of the uniform, then the C value can be called. In power transmission equipment, different axis degree is a common problem. In the bearing selection, you must be compensated.

Although each type of bearing on the different axes have a basic degree of correction factor, but the design characteristics of their respective manufacturers also play an important role, you must consider these characteristics. Typically, a sample of manufacturers of their products listed on these factors.

Shape constraints: the requirements of the rated load Once the final value, you must consider the bearing installation of the required dimensions, including the consideration here is the installation of the bearing and fixed. And with rated load with the required matching of the shaft bearing size. These factors help determine the bearing structure and size, you can also exclude certain bearing types. In some cases, due to space constraints or even at rated load ruled out before determining choice.

Cases, if the shape is very narrow bearing, ball bearings are available only in this type of work. Or, if you must use very small diameter of the bearing box, you will need to install the same axis two or more roller bearings to achieve sufficient load ratings.

When the shaft size and requirements of the bearing load ratings with very different measure, the emergence of another common conflicts. But if the axle load of a large light, even if the requirements of the rated load is small, but have to make an expensive, high-rated loads of large bearings, in this case, the best contacts with the bearing manufacturer in order to propose the most cost-effective solution.