SLEWING BEARING
Slewing bearing is definitely a huge of bearing with special structure that can bear integrated load like axle load, radial load and overturning load. It combines support, rotating, transmitting, fixed, sealed, anti-corrosion and additional functions into one product. Trusted in lifting machinery, building machinery, transmitting machinery, mining and metallurgy machinery, medical gear and radar, ship, wind power and other industries.
Slewing bearings could be divided into many different types according to their diverse structural forms, such as 4 point contact ball slewing bearing ,one row cross roller slewing bearing, twice row contact ball slewing bearing, three row roller slewing bearing etc. Each kind has different qualities according to its style and structure, making it ideal for specific applications. For instance Single row four stage speak to ball slewing bearings are simple in structure, but they can bear serious radial load, and will also bear specific axial and overturning loads. However, when the device has huge requirements on the precision and rigidity of the bearing, or the bearing needs to meet up with the zero clearance or bad clearance operating circumstances, the cross 
cylindrical roller slewing bearing could be the correct choice.
Therefore, when choosing slewing bearings, the next aspects should be considered:
· Precision
When the situation of precision is to select the dominant parameters, we generally choose the cross roller slewing bearing because it has more compact clearance and larger accuracy.
· Load
How big is load is among the critical indicators in determining the bearing size of slewing bearings. They can be used in a variety of applications where the load size and way may change.
· Operating temperature
Generally, the allowable working temperature of a slewing band depends generally on the isolation gasket and the sealing materials used for lubrication. The allowable working temperature ranges from -25 to + 70°C. If slewing bearings must operate at extreme temperatures, please contact our engineer .
· Vibration
For applications involving vibration, pre-loaded four-point speak to ball slewing bearings and cross cylindrical roller slewing bearings can be found.
· Turning speed
Four-point contact ball slewing bearings produce less friction than cross-cylindrical roller slewing bearings, therefore the four-point contact ball slewing bearings also have higher rotational speeds.
· Seals
Sealing is vital to the performance of slewing bearings. Certified seals found in slewing bearings offer good protection against dampness and pollution, and make sure that grease plays a crucial function. If slewing bearings do the job under extreme circumstances, such as contact with normal water, vacuum, corrosive contaminants or radiation, please speak to our technical engineers for specific solutions.
Kaydon slewing bearings
Kaydon slewing bearing solutions are ideal for:
Optimal economy in confirmed envelope dimension
Heavy-duty applications needing significant load-carrying capacity
Patterns where precise positioning is critical
The initial requirements of wind turbines
Kaydon’s slewing bearings offer a wide variety of solutions for the most demanding technical specs in a number of applications, including:
Aerospace and defense
Heavy equipment
Industrial machinery
Medical systems
Mining
Oil & gas
Renewable energy
Robotics
Semiconductor manufacturing equipment
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Bearing selector
The Kaydon slewing bearing selector enables you to search our standard slewing bearings by part number or bearing requirements. Benefits include load charts and downloadable 3D drawings.