Development example of ultra high speed bearing

Home>Bearing knowledge> Development example of ultra high speed bearing
/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131";

Development example of ultra high speed bearing

Source: China Bearing Network Time: 2018-04-17

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Take the development of ultra-high speed HA tapered roller bearings as an example.
(1) The problem is raised in gas turbines and some machine tools and engineering machinery; high speed and axial load; the use of ball bearings is too short; the use of short cylindrical roller bearings is lack of axial load; axial clearance Difficult to adjust; expect to use tapered roller bearings to break this problem.
(2) Skills that need to be dealt with. The skill of high-speed restraint of tapered roller bearings is to improve the smoothness between the large ribs of the inner ring and the large end faces of the rollers; this part is most prone to severe wear and burn at high speed; The main reason for constraining its speed.
(3) Treatment method In the general layout of tapered roller bearings; smooth oil flow path is difficult to obtain smooth oil in the inner ring large rib and the large end face of the roller; this part is relatively large sliding; it is the most demanding smooth oil.
Therefore, Japan and other countries have developed HA-type tapered roller bearings; this bearing rib is on the outer ring; this smooth oil can smooth the outer ring rim and the touch surface of the roller's large end face; together here even when stopped It can also store some oil; it prevents the oil from burning when starting; but there are several oil drain holes on the outer ring ribs according to the demand; to prevent the oil from discharging the passage; the power loss and temperature of the oil mixture formed in a certain part Raise too high. Because the inner ring has no ribs; the temperature has dropped; thus reducing the possibility of seizure activity between the inner ring and the shaft. The bearing of this layout uses the outer ring guiding method for the cage; The frame can guide the roller to work smoothly without tilting; prevent seizure and excessive wear; this is also beneficial to high speed.
(4) Achievable function The HA-type bearing has a dmn value of up to 2 million; twice the advancement of the general layout; for example, for a gas turbine reducer main shaft (model I-IA30205); Under the condition of 1000N load; ensure that there is 2L/min oil supply to the bearing to supply circulating No. 4 turbine oil; its working speed can reach 60,000 revolutions without causing burns.

Recommend to friends comments close window

Bearing related knowledge
Bearing repaired varieties of hardware common sense: a detailed analysis of the difference "SKF bearing steel stamp"
Imported bearings should be paid attention to during regular maintenance
KOYO bearing noise elements and essential problems device and protection TIMKEN slewing bearing


This article links to http://
Please indicate the bearing network http://

Previous:The normalization of the ferrule Next: koyo bearing correct device and operation fault view

Imidazole Ionic Liquids

N-Methylimidazolium Chloride,N-Methylimidazolium Chloride 99%,N-Methylimidazolium Chloride In Stock,Imidazole Ionic Liquids

Henan Tianfu Chemical Co.,Ltd , https://www.tianfuchem.com