Slewing bearing is definitely a large of bearing with distinctive structure that could bear integrated load just like axle load, radial load and overturning load. It combines support, rotating, tranny, fixed, sealed, anti-corrosion and other functions into one unit. Trusted in lifting machinery, building machinery, transmission machinery, mining and metallurgy machinery, medical tools and radar, deliver, wind power and other industries.
Slewing bearings can be divided into many types according to their numerous structural forms, such as 4 point contact ball slewing bearing ,solo row cross roller slewing bearing, dual row contact ball slewing bearing, 3 row roller slewing bearing and so forth. Each kind has different characteristics according to its style and structure, making it ideal for specific applications. For example Single row four stage contact ball slewing bearings happen to be simple in structure, however they can bear hefty radial load, and will also bear a number of 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 circumstances, the cross cylindrical roller slewing bearing would be the correct choice.
Therefore, when selecting slewing bearings, the next aspects is highly recommended:
When the situation of precision is to choose the dominant parameters, we generally choose the cross roller slewing bearing since it has more compact clearance and larger accuracy.
The size of load is among the important factors in determining the bearing size of slewing bearings. They can be utilized in a variety of applications where in fact the load size and path may change.
· Operating temperature
In most cases, the allowable working temperature of a slewing ring depends mainly on the isolation gasket and the sealing material 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 .
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 a lesser amount of friction than cross-cylindrical roller slewing bearings, therefore the four-point contact ball slewing bearings also have higher rotational speeds.
Sealing is vital to the effectiveness of slewing bearings. Certified seals used in slewing bearings provide good protection against moisture and pollution, and make certain that grease plays a crucial role. If slewing bearings operate under extreme conditions, such as contact with water, vacuum, corrosive contaminants or radiation, please get in touch with 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
Models where precise positioning is crucial
The unique requirements of wind generators
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 lets you search our standard slewing bearings by part number or bearing requirements. Effects include load charts and downloadable 3D drawings.