Slewing bearing is definitely a big of bearing with unique structure that may bear integrated load like axle load, radial load and overturning load. It combines support, rotating, transmitting, fixed, sealed, anti-corrosion and various other functions into one device. Widely used in lifting machinery, development machinery, tranny machinery, mining and metallurgy machinery, medical gear and radar, deliver, wind power and different industries.
Slewing bearings can be divided into many different types according to their diverse structural forms, such as for example 4 point contact ball slewing bearing ,solo row cross roller slewing bearing, double row contact ball slewing bearing, three row roller slewing bearing and so on. Each type has different characteristics according to its design and structure, rendering it ideal for specific applications. For example Single row four point get in touch with ball slewing bearings will be simple in structure, but they can bear large radial load, and will also bear certain axial and overturning loads. However, when the device has large 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 will be the correct choice.
Therefore, when selecting slewing bearings, the following aspects is highly recommended:
When the problem of precision is to select the dominant parameters, we generally choose the cross roller slewing bearing because it has scaled-down clearance and larger accuracy.
How big is load is probably the critical indicators in deciding the bearing size of slewing bearings. They can be utilized in an array of applications where the load size and direction may change.
· Operating temperature
In most cases, the allowable operating temperature of a slewing band depends mostly on the isolation gasket and the sealing materials used for lubrication. The allowable working temperature ranges from -25 to + 70°C. If slewing bearings are required to operate at extreme temps, please contact our engineer .
For applications involving vibration, pre-loaded four-point speak to ball slewing bearings and cross cylindrical roller slewing bearings can be found.
· Turning speed
Four-point contact ball slewing bearings produce significantly less friction than cross-cylindrical roller slewing bearings, therefore the four-point contact ball slewing bearings likewise have higher rotational speeds.
Sealing is vital to the effectiveness of slewing bearings. Qualified seals used in slewing bearings give good protection against dampness and pollution, and ensure that grease plays a crucial role. If slewing bearings work under extreme circumstances, such as exposure to normal 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 perfect for:
Optimal economy in a given envelope dimension
Heavy-duty applications needing significant load-carrying capacity
Models 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 specifications in a number of applications, including:
Aerospace and defense
Oil & gas
Semiconductor manufacturing equipment
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The Kaydon slewing bearing selector enables you to search our standard slewing bearings by part number or bearing requirements. Benefits incorporate load charts and downloadable 3D drawings.