Slewing bearing - GIF

Slewing bearing.

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Previously:

Assembling a double row bearing - GIF
Assembling a double row tapered roller bearing - GIF
Drill powered bearing puller - GIF
Fast roller bearing assembly - GIF
Heating a large bearing to fit shaft - GIF
Homemade high precision air bearing CNC lathe and grinder
How ball bearings are made - GIFs
Installing a connecting rod bearing using liquid nitrogen - GIF
Packaging roller bearings - GIF
Roller bearing assembly - GIFs
Self-aligning ball bearings - GIF
World's largest bearings - video and photos

I wonder why the spacers, instead of just using ball or some other sort of bearings all the way around. Maybe, to make up for thermal expansion/contraction?

Quote:

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Originally Posted by schuylergrace

I wonder why the spacers, instead of just using ball or some other sort of bearings all the way around. Maybe, to make up for thermal expansion/contraction?

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stops the balls wearing against each other - most bearings have a cage to seperate the balls/ bearing elements - in this case, the cage is segmented into bronze spacers.