Next, we specifically look at the application analysis of the slewing bearing in some areas:
1. Construction machinery
The slewing bearings for construction machinery usually use small-size four-point contact ball slewing bearings with a diameter of no more than 2 meters.
2, marine crane
Marine cranes generally use double-row ball, four-point contact ball, and three-row roller internal gear structure. According to different bearing capacity, three-row roller slewing bearings are usually used for heavy-duty cranes, four-point contact ball turntables and Double row ball slewing bearings for light cranes. Because the crane works in the environment of -20 ° C - 45 ° C, this type of bearing requires high mechanical properties of the material.
3. Port mobile crane
Port cranes typically use three-row roller slewing bearings with internal or external teeth of 4 meters in diameter to withstand high overturning moments.
4, stacker and reclaimer
The slewing bearings for stacker reclaimers are usually ball-column combined, three-row roller type and cross-roller type, and most of them are over 3 meters in diameter. Due to the harsh working environment and large dust, these bearings have the characteristics of high bearing capacity, long service life and good sealing performance.
5, ship unloader
The slewing bearing for the ship unloader usually adopts a three-row roller structure with external teeth and a diameter of about 4 meters.
6, tower crane
The slewing bearings for tower cranes usually use small-size four-point contact ball slewing bearings or double volleyball turntables with a diameter of no more than 2 meters.
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