Slewing bearing is normally a sizable of bearing with specialized structure that may bear integrated load just like axle load, radial load and overturning load. It combines support, rotating, transmitting, fixed, sealed, anti-corrosion and different functions into one unit. Trusted in lifting machinery, development machinery, transmission machinery, mining and metallurgy machinery, medical apparatus and radar, deliver, wind power and different industries.
Slewing bearings can be divided into many types according to their distinct structural forms, such as four point contact ball slewing bearing ,solo row cross roller slewing bearing, double row contact ball slewing bearing, three row roller slewing bearing etc. Each type has different features according to its style and structure, so that it is suited to specific applications. For instance Single row four point get in touch with ball slewing bearings will be simple in structure, but they can bear hefty radial load, and can also bear selected axial and overturning loads. However, when the device has large requirements on the precision and rigidity of the bearing, or the bearing must meet up with the zero clearance or harmful clearance operating conditions, the cross cylindrical roller slewing bearing will be the correct choice.
Therefore, when choosing slewing bearings, the following aspects should be considered:
When the condition 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.
How big is load is one of the critical indicators in determining the bearing size of slewing bearings. They works extremely well in a wide variety of applications where the load size and course may change.
· Operating temperature
Generally, the allowable functioning temperature of a slewing ring depends primarily 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 speak to our engineer .
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 less friction than cross-cylindrical roller slewing bearings, therefore the four-point contact ball slewing bearings also have higher rotational speeds.
Sealing is crucial to the overall performance of slewing bearings. Qualified seals found in slewing bearings provide good protection against wetness and pollution, and make sure that grease plays an essential role. If slewing bearings job under extreme conditions, such as exposure to drinking water, vacuum, corrosive contaminants or radiation, please get in touch with 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
Styles where precise positioning is crucial
The initial requirements of wind turbines
Kaydon’s slewing bearings give a wide variety of solutions for the most demanding features in a variety of applications, including:
Aerospace and defense
Oil & gas
Semiconductor manufacturing equipment
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The Kaydon slewing bearing selector allows you to search our standard slewing bearings by part number or bearing requirements. Effects involve load charts and downloadable 3D drawings.