SLEWING BEARING
Slewing bearing is certainly a large of bearing with distinctive structure that may bear integrated load just like axle load, radial load and overturning load. It combines support, rotating, transmission, fixed, sealed, anti-corrosion and different functions into one device. Widely used in lifting machinery, engineering machinery, transmitting machinery, mining and metallurgy machinery, medical equipment and radar, deliver, wind power and different industries.
Slewing bearings can be divided into many different types according to their numerous structural forms, such as for example 4 point contact ball slewing bearing ,sole row cross roller slewing bearing, double row contact ball slewing bearing, three row roller slewing bearing and so forth. Each type has different qualities according to its design and structure, rendering it well suited for specific applications. For example Single row four level speak to ball slewing bearings happen to be simple in structure, but they can bear heavy radial load, and may also bear particular axial and overturning loads. However, when the system has substantial requirements on the precision and rigidity of the bearing, or the bearing needs to meet up with the zero clearance or detrimental clearance operating circumstances, the cross cylindrical roller slewing bearing would be the correct choice.
Therefore, when selecting slewing bearings, the next aspects should be considered:
· Precision
When the condition of precision is to select the dominant parameters, we generally choose the cross roller slewing bearing because it has small clearance and bigger accuracy.
· Load
How big is load is one of the important factors in determining the bearing size of slewing bearings. They can be used 
in a wide range of applications where in fact the load size and route may change.
· Operating temperature
Generally, the allowable working temperature of a slewing ring depends generally on the isolation gasket and the sealing material used for lubrication. The allowable operating temperature ranges from -25 to + 70°C. If slewing bearings are required to operate at extreme temperatures, please get in touch with our engineer .
· Vibration
For applications involving vibration, pre-loaded four-point contact ball slewing bearings and cross cylindrical roller slewing bearings can be found.
· Turning speed
Four-point contact ball slewing bearings produce fewer friction than cross-cylindrical roller slewing bearings, so the four-point contact ball slewing bearings also have higher rotational speeds.
· Seals
Sealing is vital to the overall performance of slewing bearings. Qualified seals used in slewing bearings give good protection against moisture and pollution, and ensure that grease plays a crucial position. If slewing bearings function under extreme circumstances, such as contact with water, vacuum, corrosive contaminants or radiation, please speak to our technical engineers for specific solutions.
Kaydon slewing bearings
Kaydon slewing bearing solutions are perfect for:
Optimal economy in confirmed 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 provide a wide variety of alternatives for the most demanding 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 permits you to search our standard slewing bearings by part number or bearing requirements. Effects consist of load charts and downloadable 3D drawings.
