SLEWING BEARING
Slewing bearing is definitely a big of bearing with specialized structure that can bear integrated load just like axle load, radial load and overturning load. It combines support, rotating, transmission, fixed, sealed, anti-corrosion and various other functions into one product. Trusted in lifting machinery, engineering machinery, tranny machinery, mining and metallurgy machinery, medical apparatus and radar, ship, wind power and additional industries.
Slewing bearings could be divided into many different types according to their diverse structural forms, such as for example four point contact ball slewing bearing ,sole row cross roller slewing bearing, double row contact ball slewing bearing, 3 row roller slewing bearing and so on. Each kind has different attributes according to its style and structure, making it suited to specific applications. For example Single row four level contact ball slewing bearings are simple in structure, but they can bear weighty radial load, and may also bear several axial and overturning loads. However, when the mechanism has high requirements on the precision and rigidity of the bearing, or the bearing needs to meet up with the zero clearance or adverse clearance operating conditions, the cross cylindrical roller slewing bearing will be the correct choice.
Therefore, when choosing slewing bearings, the next aspects should be considered:
· Precision
When the condition of precision is to select the dominant parameters, we generally opt for the cross roller slewing bearing since it has scaled-down clearance and bigger accuracy.
· Load
How big is load is probably the critical indicators in determining the bearing size of slewing bearings. They works extremely well in a wide selection of applications where the load size and route may change.
· Operating temperature
Generally, the allowable functioning temperature of a slewing ring depends mostly on the isolation gasket and the sealing material used for lubrication. The allowable operating temperature ranges from -25 to + 70°C. If slewing bearings must operate at extreme temperature ranges, 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, so the four-point contact ball slewing bearings likewise have higher rotational speeds.
· Seals
Sealing is essential to the functionality of slewing bearings. Skilled seals used in slewing bearings offer good protection against dampness and pollution, and ensure that grease plays an essential role. If slewing bearings job under extreme circumstances, such as exposure to normal water, vacuum, corrosive contaminants or radiation, please speak to our technicians for specific solutions.
Kaydon slewing bearings
Kaydon slewing bearing solutions are ideal for:
Optimal economy in a given envelope dimension
Heavy-duty applications requiring significant load-carrying capacity
Designs where precise positioning is critical
The unique requirements of wind turbines
Kaydon's slewing bearings give you a wide variety of alternatives for the most demanding features in a variety 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 lets you search our standard slewing bearings by part number or bearing requirements. Benefits include load charts and downloadable 3D drawings.