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.