Taper roller bearing longevity

In order to achieve taper roller bearing longevity,we can use carbonitriding of ETA bearing processing.

  ETA bearings, as a special heat treatment, residual austenite and carbide surface part of the dispersed properly, good thermal stability, high tolerance to peeling strength of foreign body in lubricating oil, is a kind of long life wind power bearing .

  Through the correlation method, we have reached the requirement of bearing technology of small, high reliability.

wind power bearing and bearing for yaw gear box

Due to yaw gear box requirements for small and large torque transmission, so the deck crane bearing is also pursuing a small design and high load capacity. Therefore, the raceway ring use thin-wall angular contact ball bearings and taper roller bearing .

If the angular contact ball bearing load large axial load, it is necessary to improve the inner ring andouter ring raceway groove rib height, as a special design to increase the allowable axial load.Compared with the yaw gear box for special products and standard products, ensure Gao Rongxuaxial load of about 9 times（wind power bearing）.

The car wheel bearing of the past

The car wheel bearing of the past is the most used in pairs of single row tapered roller or ball bearing.

   With the development of technology, the use of car wheel hub unit cars have been widely. The scope of use of hub bearing unit and use the growing, has now developed to the third generation.

   The first generation is composed of double row angular contact bearing components. The second generation in the outer raceway has a flange bearing for fixed, will be simple bearing sleeve to the shaft is fixed by the nut, making the car repair easier.

Insulation bearing for generator

Bearing  used for generator,to prevent the phenomenon of electric spark for bearing internal conductive induced (electrical erosion), and improve its reliability is essential.

  We have developed through the use of special ceramics and improvement of metal spraying method, ensure that the monolayer type insulating ability and reliability of the new deck crane bearing product.

  Insulation resistance value more than 100M Omega, dielectric breakdown voltage of insulating performance is more than 2KV, the insulation performance to meet the requirements of wind power bearing generator.

Use conditions of planetary gear

A comprehensive experimental study, planetary gear subject can be summarized as the following 3 points.

• Effect of gear and deck crane bearing outer ring of elastic deformation.
• Effect of non linear planetary bearings caused by the bracket distortion
• Effect of lubricating oil deficiency 

  The selected optimal bearing take full account of these characteristics. As the planet gear, in these conditions of use,high speed bearing load capacity and light load conditions, we try to reach the optimum rib design and the axial clearance of sliding friction and adhesion is very strong.

   In addition, to achieve long life through a special heat treatment.

Maximum contact surface pressure

Maximum contact surface pressure of self aligning roller bearing exceeds the set value,  need to increase the size of bearing. Then prolong the life calculation and reduce the maximum contact surface pressure.

  On the contrary, the body is very difficult to roll in the raceway surface rolling at light load, sliding increasing with danger raceway surface damage.

  Therefore, we recommend the above minimum load in the basic load rating of 4%. In the surface of lubricating , need method of wind power bearing starting without making planetary bearing lack lubricating  on the surface of the part of oil.

Planetary bearing and gear box

Gear box is composed of an input shaft, planetary, low-speed shaft, intermediate shaft, high speed shaft.

  Planetary bearing use self aligning roller bearings and Full complement cylindrical roller bearing. In the analysis model of planetary bearings, the bearing load as  load of rolling body, fixed each gear occlusal point of internal gear end and the sun gear end , considering the outer ring deformation,to calculate bearing life.

  According to the analysis results, consider the life calculation of elastic deformation of the ring, in each column between the maximum difference of 58% generation,  we believe that the bracket end column compared with the other column end load load calculation of high proportion, short service life.

  Maximum contact surface pressure bearing gear box for the self-aligning roller bearing are calculated in the case of cylindrical roller bearing with point contact, line contact is used to obtain the. And the application considered in the calculation of non linear specification tendency.