Bearing calculation - SKF（SKF轴承计算）.pdf

Bearing calculation Extract from the Railway technical handbook, volume 1, chapter 5, page 106 to 12 5 Bearing calculation Calculation principles . . . . . . . . . 107 Basic rating life . . . . . . . . . . . . . . 108 SKF rating life . . . . . . . . . . . . . . . 2 Advanced calculations . . . . . . . . 6 106 Bearing calculation When selecting an axlebox bearing or unit, SKF should be contacted for assistance with necessary calculations. SKF can provide a portfolio of different calculation methods to optimize bearing selection for any kind of application. Basic calculation principles are mentioned in this chapter, to give an overview of state of the art methods that can be used for axlebox bearing calculation and more advanced investigations. Depending on the individual specification requirements and experience, the most suitable package of calculations has to be selected to 5 provide a design that is both reliable and safe. Calculation principles data already available with a similar axlebox bearing/unit arrangement . When specific When selecting axlebox bearings, in addition experience is lacking and extraordinary to the bearing rating life calculation, other demands in the specification are made, then design elements should be considered as much more work is needed including, for well . These include components associated example, more accurate calculations and/or with the bearing/unit and the axlebox such testing . as axle journal, axlebox housing and the In the following sections, basic calculation interaction of guidance principle, springs information is presented