SLEWING BEARING
Slewing bearing is definitely a huge of bearing with distinctive structure that may bear integrated load like axle load, radial load and overturning load. It combines support, rotating, transmitting, fixed, sealed, anti-corrosion and other functions into one unit. Trusted in lifting machinery, engineering machinery, transmission machinery, mining and metallurgy machinery, medical tools and radar, ship, wind power and various other industries.
Slewing bearings can be divided into many different types according to their numerous structural forms, such as 4 point contact ball slewing bearing ,one row cross roller slewing bearing, twice row contact ball slewing bearing, 3 row roller slewing bearing etc. Each kind has different attributes according to its style and structure, so that it is suitable for specific applications. For example Single row four level speak to ball slewing bearings happen to be simple in structure, but they can bear hefty radial load, and may also bear certain axial and overturning loads. However, when the mechanism has great requirements on the precision and rigidity of the bearing, or the bearing must meet the zero clearance or bad clearance operating conditions, the cross cylindrical roller slewing bearing is definitely the correct choice.
Therefore, when choosing slewing bearings, the next aspects is highly recommended:
· Precision
When the condition of precision is to select the dominant parameters, we generally pick 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 identifying the bearing size of slewing bearings. They can be used in a variety of applications where the load size and direction 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 functioning temperature ranges from -25 to + 70°C. If slewing bearings are required to operate at extreme temperature ranges, please speak to our engineer .
· Vibration
For applications involving vibration, pre-loaded four-point get in touch with ball slewing bearings and cross cylindrical roller slewing bearings are available.
· 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 also have higher rotational speeds.
· Seals
Sealing is essential to the overall performance of slewing bearings. Experienced seals used in slewing bearings give good protection against wetness and pollution, and make certain that grease plays a significant function. If slewing bearings do the job under extreme circumstances, such as exposure to normal water, vacuum, corrosive contaminants or radiation, please contact our technical engineers for specific solutions.
Kaydon slewing bearings
Kaydon slewing bearing solutions are ideal for:
Optimal economy in a given envelope dimension
Heavy-duty applications needing significant load-carrying capacity
Patterns where precise positioning is critical
The unique requirements of wind turbines
Kaydon’s slewing bearings give a wide variety of alternatives for the most demanding specifications 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 permits you to search our standard slewing bearings by part number or bearing requirements. Effects include load charts and downloadable 3D drawings.