Single-row four-point contact ball type selection calculation:

 

The selection calculation of single-row four-point contact ball slewing bearing is carried out according to the bearing Angle of 45° and 60° respectively.

 

Selection according to static working condition:

 

Ⅰ alpha = 60 ° Ⅱ alpha = 45 °

 

Fa '=(Fa+5.046Fr)fs Fa' =(1.225Fa+2.676Fr)fs

 

M '= Mfs M' = 1.225 Mfs

 

Check life according to dynamic working conditions:

 

Ⅰ alpha = 60 ° Ⅱ alpha = 45 °

 

Fa '=(Fa+5.046Fr)fd Fa' =(1.225Fa+2.676Fr)fd

 

M '= Mfd M' = 1.225 Mfd

 

Then find the above two points on the load curve, one of which is below the curve.

 

 

 

Double exclusion ball type selection calculation:

 

Selection according to static working condition:

 

Fa '= Fafs

 

M '= Mfs

 

Check life according to dynamic working conditions:

 

Fa '= Fafd

 

M '= Mfd

 

 

 

Single row cross roller type selection calculation:

 

Selection according to static working condition:

 

Fa '= (Fa + 2.05 Fr) fs

 

M '= Mfs

 

Check life according to dynamic working conditions:

 

Fa '= (Fa + 2.05 Fr) fd

 

M '= Mfd

 

 

 

Three row roller type selection calculation:

 

The radial force Fr was assumed to be borne by the radial roller, and only the axial raceway load and overturning moment were calculated.

 

Selection according to static working condition:

 

Fa '= Fafs

 

M '= Mfs

 

Check life according to dynamic working conditions:

 

Fa '= Fafd

 

M '= Mfd