SLEWING BEARING
Slewing bearing is normally a sizable of bearing with exceptional 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 different functions into one unit. Trusted in lifting machinery, engineering machinery, tranny machinery, mining and metallurgy machinery, medical gear and radar, deliver, wind power and other industries.
Slewing bearings can be divided into many types according to their distinct structural forms, such as for example 4 point contact ball slewing bearing ,one row cross roller slewing bearing, double row contact ball slewing bearing, 3 row roller slewing bearing etc. Each kind has different characteristics according to its style and structure, which makes it well suited for specific applications. For example Single row four stage contact ball slewing bearings will be simple in structure, nevertheless they can bear major radial load, and can also bear particular axial and overturning loads. However, when the system has great requirements on the precision and rigidity of the bearing, or the bearing must meet the zero clearance or bad clearance operating circumstances, the cross cylindrical roller slewing bearing will be the correct choice.
Therefore, when choosing slewing bearings, the following aspects should be considered:
· Precision
When the challenge of precision is to select the dominant parameters, we usually choose the cross roller slewing bearing because it has scaled-down clearance and bigger accuracy.
· Load
How big is load is among the critical indicators in identifying the bearing size of slewing bearings. They can be utilised in an array of applications where the load size and route may change.
· Operating temperature
In most cases, the allowable functioning temperature of a slewing band depends mainly 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 contact ball slewing bearings and cross cylindrical roller slewing bearings are available.
· Turning speed
Four-point contact ball slewing bearings produce a smaller amount friction than cross-cylindrical roller slewing bearings, so the four-point contact ball slewing bearings likewise have higher rotational speeds.
· Seals
Sealing is vital to the performance of slewing bearings. Certified seals found in slewing bearings provide good protection against wetness and pollution, and ensure that grease plays a crucial purpose. If slewing bearings function 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 perfect for:
Optimal economy in a given envelope dimension
Heavy-duty applications needing significant load-carrying capacity
Styles where precise positioning is critical
The initial requirements of wind generators
Kaydon’s slewing bearings offer a wide variety of alternatives for the most demanding specs in a number 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 allows you to search our standard slewing bearings by part number or bearing requirements. Results involve load charts and downloadable 3D drawings.