replacing one bearing with multiple 11

[stevepmd]

Due to increased radial loading on a shaft, we need to reselect the (rolling element) support bearings - one bearing on each shaft end. Uniformly distributed load on shaft. Larger bearings would provide the required dynamic load rating - but would require a larger dia shaft and redesigned brg housings. Can we instead replace each of the current bearings with 2 or more of the current bearings to get the required rating? How would we get uniform bearing load distribution in such an arrangement? Is there a technical reference that discusses this approach?

 

[DesignerGuy16]

Have you looked to see if you can fine a 25mm bore bearing with a larger mating bore? Larger bearings would increase the load, or look at tapered roller bearings, etc. It all depends on the application and load it's seeing.


James Spisich
Design Engineer, CSWP

 

[tbuelna]

stevepmd,

Assuming you must stay with ball bearings, and cannot change the bearing bore or outside diameters, you may still have an option. You can consider a full complement ball bearing, which will give you somewhat better radial capacity than a conrad type bearing. However, the full complement radial ball bearing will need a loading slot or split race, and it will also have lower speed capacity.

Good luck.
Terry

 

[diskullman]

You could simply go to a full compliment "max type " bearing for increased load ratings

Russell Giuliano