Wheel bearing applications in various fields

Related hot search term: wheel bearing applications four-point contact ball slewing Tri-row roller gear wheel ferris wheel bearing

1. Wind Turbines

Connecting portion yaw bearing mounted on a tower and the cockpit, the pitch bearing mounted on the hub is connected with the root portion of each blade. Each wind turbine with a yaw bearings and three pitch bearings. Yaw, pitch bearing rings of material selection 42CrMo, heat treatment with the overall quenching, raceway surface hardening. Yaw, pitch bearing force situation is complex, and to withstand shock and vibration is relatively large, and therefore, requires both bearings to withstand the impact, but also bear a greater load. Wind turbines host life requirements of 20 years, a larger thrust roller bearing installation costs, thus requiring yaw, pitch bearing life have reached 20 years. Bearing rings matrix hardness is 240-280HB, able to withstand impact without plastic deformation, while the raceway surface quenching hardness 55-62HRC, contact fatigue life can be increased, thus ensuring long life bearing requirements.

2. Ship Cranes

Ship Cranes general use double Reducing ball, four-point contact ball bearing turntable Tri-row roller tooth structure, depending on the carrying capacity, three-row roller slewing bearings are usually used for heavy-duty cranes, wheel and four-point contact ball Reducing double ball bearing turntable for lightweight cranes.

Because the crane operates in -20 ° C- + 45 ° C environment, the higher kind of bearing on the mechanical properties of the material requirements.

3. Offshore Cranes

Depending on the load capacity requirements, offshore crane usually using four-point contact ball slewing and three-row roller gear wheel bearings.

Applications in offshore crane turntable bearings with special material requirements, the mechanical properties of the material to be able to guarantee the safety factor under extreme load, forgings sampling Charpy impact test can reach the average of 42 J @ -20 ° C or 27J @ - 40 ° C. Bearing finished CCS to be certified.

4. harbor mobile cranes

4 m harbor cranes usually using tooth or teeth outside diameter of three-row roller slewing bearings to withstand high overturning moment.

5. Stacker Reclaimer

Reclaimer with column wheel bearings usually ball joint, three-row roller-type and cross roller type, most ultra-three meters in diameter. Due to poor working conditions, dusty, these slewing ring bearings have a high load carrying capacity, long life, good sealing performance characteristics.

6. Ferris wheel

For four-point contact ball bearing turntable Ferris wheel on the outside diameter of 4100mm, thickness 85mm.

Selection of slewing ring bearing fit should focus on the following four points:

(1) the circumferential surface of bearing rings should have good support and force uniform, in order to reduce the distortion, and give full play to the carrying capacity of the bearing.

(2) rings in their mating surfaces cannot slide along tangential direction, slewing ring bearing otherwise it will damage the mating surfaces.

(3) the free end bearing must adapt to changes in the length and the shaft and the bearing seat hole phase, which must have the ability to adapt to the axial position within a certain range of swimming.

(4) must pay attention to the  reali slim bearings installation and removal easy, spending is labor-saving and time-saving province. The operation of bearings, hand Khan will become the cause of rust. To note that the clean hands operation, the best to wear gloves.

The life of the bearing is with the care and maintenance is very important, because it is related to the bearing life, work efficiency. Maintenance of sealed bearing maintenance use, will bring a lot of benefits, for example can bring about high production efficiency, producing more high quality precision products, maintenance can extend the life of several times to save you a re purchasing cost.‍