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The single row four point contact ball rotary bearing is composed of two seat rings
发布时间:2023-01-12浏览次数:0

Rotary bearing is also called rotary bearing, can also be called rotary bearing, also known as the bearing: rotary bearing. In general, this kind of bearing 

is mainly composed of outer ring (tooth or no tooth), sealing belt, rolling body (ball or roller), refueling nozzle, plugging, plugging pin, inner ring (tooth or no tooth), isolation block or cage and mounting hole (silk hole or light hole) several parts.


Rotary bearing type analysis:


1. Single row four-point contact ball rotary bearing


Single-row four-point contact ball rotary bearing consists of two seat rings, compact structure, light weight, steel ball and circular raceway contact four points, can withstand axial force, radial force and tipping moment at the same time. Rotary conveyors, welding operators, small and medium-sized cranes and excavators and other construction machinery can be selected.


2. Double diameter ball rotary bearing


Double volleyball rotary support bearing has three seat rings, the steel ball and isolation block can be directly discharged into the upper and lower raceway, according to the stress condition, arranged two rows of different diameter of the steel ball. This kind of open assembly is very convenient, the upper and lower arc raceway bearing Angle is 90°, can withstand great axial force and tipping moment. When the radial force is greater than 0.1 times the axial force, raceway must be specially designed. The axial and radial dimensions of the double diameter ball slewing bearing are large and the structure is tight. Especially suitable for the requirements of medium diameter tower crane, truck crane and other loading and unloading machinery.


3. Single row cross roller type rotary bearing


Single row cross roller type rotary bearing, composed of two seat ring, compact structure, light weight, high manufacturing accuracy, small assembly clearance, high requirements for installation accuracy, roller is 1:1 cross arrangement, can bear the axial force, tipping moment and large radial force, is widely used in lifting transport, construction machinery and military products.


4. Three row roller type rotary bearing


Three row roller rotary bearing has three seat rings, upper and lower and radial raceway separately, so that the load of each row of rollers can be exactly determined. It can bear all kinds of loads at the same time. It has the largest bearing capacity among the four products. The shaft and radial dimensions are large and the structure is firm. It is especially suitable for heavy machinery requiring large diameter, such as bucket wheel excavator, wheel crane, Marine crane, port crane, steel running table and large tonnage truck crane.


5. Lightweight series rotary bearings


Lightweight slewing bearing has the same structure as ordinary slewing bearing, light weight, flexible rotation, widely used in food machinery, filling machinery, environmental protection machinery and other fields.


6. Single row four point contact ball type rotary bearing


Single-row four-point contact ball rotary bearing consists of two seat rings, compact structure, steel ball and circular raceway contact four points, mainly used in truck cranes, tower cranes, excavators, pile drivers, engineering trucks, radar scanning equipment and other mechanical bearing tipping moment, vertical axial force, horizontal inclination force.


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