1. The problem put forward

In the gas turbine and some machine and engineering machinery, high speed and axial load, the use of ball bearings can make use of life too short, use short cylindrical roller bearing axial load ability is insufficient, axial clearance difficult to adjust, so I hope using circular cone roller bearings break through this difficult problem.

2. The key technology of must be solved

In order to improve the taper roller bearings have to high speed limit, is to improve the technical key points in big circle with roller big face raised edge between the lubrication condition, the part in the most easily when developing severe wear and burns, the part is to limit its fast pace of the main cause.

3. The solution

In ordinary structure of the tapered roller bearings, lubricating oil, the circulation line big circle with roller surface contact raised edge large part is very difficult to get the lubricating oil, however this site relative sliding bigger, just is the most need lubricating oil.

So, Japan and other countries developed qg-ha type to taper roller bearings, the bearing raised edge on the outer race, so the circulation of oil can lubrication outer ring and roller main raised edge contact on the site, and, even when still here also to be able to store some oil, so as to avoid the accident when starting TVC burns, but raised edge on their according to several oil discharge to open hole, so as to avoid oil without eduction channel, occluded in a cause a stir power loss of oil in the high temperature and. Because the inner ring no raised edge, temperature decrease, so reduce the inner circle between shaft with face the possibility of between peristalsis. The structure of the bearing outer ring to keep wearing USES guidance method, which maintains a steady guide roller is not skewed the normal operation, thus avoid vibration and excessive wear, this also is beneficial to the high speed.

4. Can achieve the effect

This type of bearing HA DMN value can be up to 2 million, than the ordinary structure improving two times or so, like used in gas turbine speed reducer axis of the bearing, model is I-IA30205, axial load in 1000 N, can guarantee a 2 L/min for the amount of oil on the bearing cycle supply 4 turbine oil, such the rotating speed of up to 60000 turn and does not appear burns phenomenon.



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