Removing rollers is no guarantee of a speed increase. Removing every other roller can cause out of balance problems which will distort the cage and quickly lead to a large failure.
Higher speeds are normally obtained through careful cage design and increased precision. Ultimately the idea is to...
jmoritz is correct, it should be larger if you intend to create clearance. Make sure you consult the bearing manufacturer though in case there are other factors in your application.
Regards
Neville French
Elstree UK
We've just launched a free online search tool covering 4000+ bearing sizes giving ID, OD, width, weight and description at
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AHR International Ltd...
With the MMXC1926 now no longer available can you advise on the following?
1) Is your present design fixed to the dimensions of the SKF MMXC1926 bearing? Can you accept a small change in bearing OD for example? (Mass may change marginally here).
2) What time scale do you require this in...
I believe SKF make many sizes with an integral thermocouple, try your nearest agent for details. This way you may be able to glean exactly where SKF think its best to take readings from.
AHR International Ltd
http://www.ahrinternational.com
Allowing the bearing to vent grease is vital. Having heard terrible tails of railway rolling stock wheels screwing off their axels due to hydraulic lock in the bearing grease, its a lesson worth heading.
AHR International Ltd
http://www.ahrinternational.com
Bearing cage construction and material will have an effect here, along with the bearings precision grade, ie ABEC 5, 7, 9 HG etc... You would have to consult the appropriate manufactures catalogue in order to gain the correct multipliers. GMN used to do an excellent example in their catalogues...
Can you advise on the magnitude of the moments? I've had experience on helicopter bearing design and I can appreciate what your after. I know of a company in Germany that could do it but it would depend on the loads and the target unit weight your after.
AHR International Ltd...
I believe the ntnamerica.com website has quite a few PDF papers on bearing behaviour and failure. Sorry I cannot point you to a specific paper.
AHR International Ltd
http://www.ahrinternational.com
Willdo is correct with what the NTN engineers advised. Once once the actual loads approch 50% of the BDR (basic dynamic load rating) most bearing manufacturers start to panic badly, hence NTN speek wise words here.
AHR International Ltd
http://www.ahrinternational.com
