What are the applications of slewing ring bearings
What are the applications of slewing ring bearings
Slewing ring bearings have unique load-bearing characteristics and are usually used in hoisting machinery, excavators, slewing tables, wind power generators, telescopes and tank turrets. Through the improvement of processing methods and the renewal of design concepts, slewing bearings can be applied to occasions with smaller dimensions, more complex structures and more precision.
In the machine tool industry, the slewing bearing of the standard structure adopts high-precision grades and applies preload to eliminate clearance and reduce vibration. The radial runout and diameter tolerance range of the bearing are within the controllable design range, the structure is compact, the cross-sectional size is small, and the diameter size can be as small as 50 mm, which prompts designers to reconsider the traditional bearing configuration.
Slewing bearings are used in crane bearings, crane bearings, bucket wheel bearings, marine crane bearings, shield machine bearings, ladle turret large bearings, and other turntable equipment bearings subject to radial, axial and moment loads.
Slewing bearings are widely used. Construction machinery is the initial application field and the most widely used place for slewing bearings, such as earthmoving machinery, excavators, dismantling machines, stackers and reclaimers, graders, road rollers, dynamic compactors, rock drilling machinery, roadheaders and etc.
1. Concrete machinery: concrete pump truck, concrete mixing and distributing boom integrated machine, belt distributing machine
2. Feeding machinery: disc feeder, sand mixer
3. Hoisting machinery: wheeled cranes, crawler cranes, portal cranes, tower cranes, fork cranes, cranes, gantry cranes
4. Ground treatment machinery: impact reverse circulation drilling rig, rotary drilling rig, impact rotary drilling rig, rotary drilling rig, reverse circulation rotary drilling rig, positive circulation rotary drilling rig, long spiral engineering drilling rig, diving engineering drilling rig, static pressure pile machine, pile driver
5. Engineering ships: dredgers, sand dredgers.
6. Special vehicles: bridge inspection vehicles, fire trucks, window cleaning machines, flat beam transport vehicles, aerial work vehicles, self-propelled aerial work platforms
In addition to various construction machinery, the scope of application of slewing bearings has gradually expanded. At present, equipment platforms such as port equipment, metallurgical equipment, and drilling platforms have begun to use slewing bearings to replace original bearings on a large scale.
