Bearing Stiffness for Tapered Roller Bearings

[SCHMIDT]

I would like to determine the 5x5 stiffness matrix of a single row tapered roller bearing.

 

[EnglishMuffin]

If you specify the stiffnesses at the "effective load center", you can get by for all practical purposes with a 3 x 3 matrix, since the tilt stiffness is almost zero about that point. So you only really need to obtain two stiffnesses (radial and axial). Suggest you contact Timken to obtain them.

 

[SCHMIDT]

Is the "effective load center" the center of the bearing adjusted for the axial and radial deflections produced by the preload ?

 

[EnglishMuffin]

No, it is the point on the bearing axis which interesects with a line drawn normal to the inner cone surface at a point midway along the bearing roller. Suggest you get a Timken catalog to see what I am talking about. The position of this point is tabulated there for every bearing they make.

 

[EnglishMuffin]

Sorry - that should have read "inner conical surface of the outer cup".