标准编号：ISO 15312:2018
中文名称：滚动轴承 热速度额定值 计算
英文名称：Rolling bearings — Thermal speed rating — Calculation
发布日期：2018-02
标准范围
This document defines the thermal speed rating for oil bath lubricated rolling bearings and defines calculation principles for the determination of this parameter. The parameter determined in accordance with this document applies to rolling bearings of the given series and sizes of standard design or of a design that, from a frictional point of view, can be related to a standard design bearing.
In most cases of standard assembly, the permissible temperature determines the maximum operating speed. Heating of the assembly is then generated by the bearing.
Thrust ball bearings are excluded from this document as kinematic effects do not allow the thermal speed rating defined in this document to be applied.
NOTE 1 In Annex A mean values for the coefficients f and f are given — f for calculating viscous losses of 0r 1r 0r oil bath lubricated bearings and f for calculating frictional losses of bearings. 1r
NOTE 2 Explanatory notes on the limiting criterion are given in Annex B. NOTE 3 In Annex C the reference conditions for grease lubrication are defined. The reference conditions are chosen such that the thermal speed rating for grease lubrication is identical to that for oil bath lubrication.
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