2018年6月12日星期二

FAG Angular Contact Ball Bearing Equivalent Dynamic Load and Tolerance

FAG Single Row Angular Contact Ball Bearing Design & Safety Guide Bearing Equivalent Dynamic Load Bearing Equivalent Dynamic Load P is applicable to bearings bearing both radial and axial dynamic loads. The bearing under the equivalent dynamic load P is the same as the rated bearing life under the actual combined load. For bearings subject to dynamic loads, the following formula is used: Contact angle 40°Fa kN Bearings Axial dynamic load Fr kN Bearing radial dynamic load P kN Bearing load equivalent dynamic load under combined load. For bearings subjected to dynamic loads, the following formula is used: Contact angle 30°Fa kN Bearings Axial dynamic load Fr kN Bearing radial dynamic load P kN Combined bearing load under equivalent dynamic load.

  Minimum load Under continuous operating conditions, for angular contact ball bearings with cages, the minimum radial load must satisfy P/Cr 0.01. Speed ​​For the bearing's limit speed nG, see the dimension table. The running speed of the bearing must not exceed the dynamic limit speed nG. Bearing Arrangement Load Ratio Bearing Equivalent Dynamic Load Single Bearing P = Fr P = 0.35 · Fr + 0.57 · Fa Bearing Arrangement Load Ratio Equivalent Dynamic Bearing Load Bearing P = Fr P = 0.39 · Fr + 0.76 · Fa Bearing Arrangement Design for Bearings The performance is comprehensively utilized and the adjacent structures must have a suitable design.

  Shaft and housing bore tolerances Recommended tolerances for cylindrical bore radial bearing shafts, see page 37, table. Refer to page 38, table for recommended tolerances for radial bearing housing bores. Mounting dimensions The bearing size table gives the maximum values ​​of the lead radii ra and ra1 and the diameters Da, Db and da of the shoulders of adjacent structures. Accuracy Dimensions and Geometrical Tolerance The main dimensions of the standard angular contact ball bearings conform to the standard DIN 628-1. The standard bearing size and geometrical tolerances are P5 and comply with the standard DIN 620-2. According to the agreement, we can provide non-standard bearings with other tolerance classes.

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