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March 13, 2020

SLEWING BEARING
Slewing bearing is usually a huge of bearing with particular structure that could bear integrated load just like axle load, radial load and overturning load. It combines support, rotating, transmitting, fixed, sealed, anti-corrosion and other functions into one product. Trusted in lifting machinery, construction machinery, transmission machinery, mining and metallurgy machinery, medical devices and radar, deliver, wind power and various other industries.
Slewing bearings can be divided into many types according to their distinct structural forms, such as several point contact ball slewing bearing ,one row cross roller slewing bearing, twice row contact ball slewing bearing, 3 row roller slewing bearing etc. Each type has different qualities according to its style and structure, so that it is suitable for specific applications. For example Single row four stage speak to ball slewing bearings will be simple in structure, however they can bear weighty radial load, and may also bear a number of axial and overturning loads. However, when the mechanism has substantial requirements on the precision and rigidity of the bearing, or the bearing needs to meet the zero clearance or harmful 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 situation of precision is to choose the dominant parameters, we usually choose the cross roller slewing bearing because it has smaller clearance and higher accuracy.
· Load
The size of load is probably the critical indicators in deciding the bearing size of slewing bearings. They works extremely well in an array of applications where in fact the load size and direction may change.
· Operating temperature
In most cases, the allowable operating temperature of a slewing ring depends mostly 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 temperatures, please contact 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. Skilled seals found in slewing bearings offer good protection against dampness and pollution, and make certain that grease plays an important function. If slewing bearings work under extreme circumstances, such as contact with drinking 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 a given envelope dimension
Heavy-duty applications requiring significant load-carrying capacity
Models where precise positioning is critical
The unique requirements of wind generators
Kaydon’s slewing bearings provide 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 contain load charts and downloadable 3D drawings.