Need a Large Diameter Radial Bearing

Try SKF, Timken, NTN, etc.

http://www.skf.com/

http://www.fag.com/

http://www.timken.com/

http://www.ntnamerica.com/

There are hundreds of manufacturers of bearings in the world. A bearing that size will probably be a special order; doesn't sound like an off-the-shelf item. Type in "bearings" in the CR4 engineering web.

A question. WHY do you need a manufactured bearing? Large obiects, like multi 10 meter diameter and multi 10 tons heavy domes for large optical telescopes do it differently. They float the dome with a thin layer of oil over the stationary part. It results in smooth vibration free, low power movement.

Some variation of it might be worth exploring. Side benefit: no special order.

So the question is WHY is it needed, and what are its MUST HAVE parameters?

Better load bearing will be assured byOil film as stated by leveles

And no paralysis caused by failure of any roller/race

Maybe the rpm exceeds that of a tracking telescope

You need to try wire race bearings Manufactured by Healy Bearings international in the UK They specialise in large diameter bearings made to order, suitable for rotating Tank turrets, windmills and circular nitting machines. these bearings can be built into your design. try this link to their website

http://www.healybearings.co.uk

Thank you John. Good information

Dal Wagner

Please send me a complete description, specification and sketch drawings, also loads and rpm, working temperature, working environment, dusty or clean and other working conditions.

We have large machine manufacturing experience for heavy machine and hydraulic power plant.

Need to know also the urgency and where will be installed.
BROCKMEYER Engineering.

can also consider Rotek (division of ThyssenKrupp and Rothe Erde) for North American made - large diameter bearings

http://www.rotek-inc.com/sPage.asp?pId=29&sId=38