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Equivalent Dynamic Load-Angular Contact Ball Bearings

Depending on different structures and contact angels, the equivalent dynamic loads of angular contact ball bearings can be obtained from Table 2.:

Table 2 

Contact Angles

or Structures

Arrangement Mode

Equivalent Dynamic Load

15°

single bearings

arranged in tandem

Fa/Fr≤e P=Fr

Fa/Fr>e P = 0.44Fr + YFa

back-to-back arrangement

face-to-face arrangement

Fa/Fr≤e P=Fr + Y1Fa

Fa/Fr>e P = 0.72Fr +Y2Fa

25°

single bearings

arranged in tandem

Fa/Fr≤0.68 P=Fr

Fa/Fr>0.68 P=0.41Fr + 0.87Fa 

back-to-back arrangement

face-to-face arrangement

Fa/Fr≤0.68 P=Fr+0.92Fa

Fa/Fr>0.68  P=0.67Fr+1.41Fa

40°

single bearings

arranged in tandem

Fa/Fr≤1.14 P=Fr

Fa/Fr>1.14 P=0.35Fr+0.57Fa  

back-to-back arrangement

face-to-face arrangement

Fa/Fr≤1.14 P=Fr+0.55Fa

Fa/Fr>1.14  P=0.57Fr+0.93Fa 

Four-Point Contact

Ball Bearing

 

Fa/Fr≤0.95 P=Fr+0.66Fa

Fa/Fr>0.95 P=0.6Fr+1.07Fa 

Double-Row Angular

Contact Ball Bearing

 

Fa/Fr≤0.8 P=Fr+0.78Fa

Fa/Fr>0.8 P=0.63Fr+1.24Fa 

Values of e,Y, Y1, Y2 in the above table should be chosen from Table 3.

Table 3 

Fa/C0

e

Y

Y1

Y2

0.015

0.38

1.47

1.65

2.39

0.029

0.4

1.4

1.57

2.28

0.058

0.43

1.3

1.46

2.11

0.087

0.46

1.23

1.38

2

0.12

0.47

1.19

1.34

1.93

0.17

0.5

1.12

1.26

1.82

0.29

0.55

1.02

1.14

1.66

0.44

0.56

1

1.12

1.63

0.58

0.56

1

1.12

1.63

Note: C0 is the basic static load rating for a single bearing.

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