What are the classifications of slewing bearings?
What are the classifications of slewing bearings?
The slewing bearing is a large bearing with a special structure that can simultaneously bear large axial load, radial load and overturning moment and other comprehensive loads, and integrates multiple functions such as support, rotation, transmission and fixation. Generally, the slew bearing itself has mounting holes, lubricating oil and sealing devices, which can meet the different needs of various hosts working under various working conditions.
1.Single-row four-point contact ball slewing bearings (01 series)
The single-row four-point contact ball slewing bearing is composed of two seat rings. It has a compact structure and light weight. The steel balls are in four-point contact with the arc raceway. It can withstand axial force, radial force and overturning moment at the same time. Construction machinery such as rotary conveyors, welding operators, small and medium-sized cranes and excavators can all be used.
2.Double row reducing ball slewing bearing (02 series)
The double-row ball slewing bearing has three seat rings. The steel balls and isolation blocks can be directly discharged into the upper and lower raceways. According to the stress conditions, the upper and lower rows of steel balls with different diameters are arranged. This kind of open assembly is very convenient. The load-bearing angle of the upper and lower arc raceways is 90, which can withstand large axial force and tipping moment. When the radial force is greater than 0.1 times the axial force, the raceway must be specially designed. Double-row ball slewing bearings with different diameters have relatively large axial and radial dimensions and a tight structure. It is especially suitable for loading and unloading machinery such as tower cranes and truck cranes that require medium or larger diameters.
3.Single row crossed roller slewing ring bearing (11 series)
The single-row crossed roller slewing bearing is composed of two seat rings. It has a compact structure, light weight, high manufacturing precision, small assembly clearance, and high requirements for installation accuracy. The rollers are arranged in a 1:1 cross and can bear the bearings at the same time. It has axial force, overturning moment and large radial force, and is widely used in lifting and transportation, engineering machinery and military products.
4.Three-row roller slewing bearings (13 series)
Three-row roller slewing bearings have three races, and the upper, lower and radial raceways are separated so that the load of each row of rollers can be accurately determined. It can withstand various loads at the same time and has the largest carrying capacity among the four products. It has large shaft and radial dimensions and a solid structure. It is especially suitable for heavy machinery requiring larger diameters, such as bucket wheel excavators, wheel excavators, etc. Type cranes, marine cranes, port cranes, molten steel transfer tables and large-tonnage truck cranes and other machinery.
5.Light series slewing bearings (WD series)
Light slewing bearings have the same structural form as ordinary slewing bearings, are light in weight and flexible in rotation. It is widely used in food machinery, filling machinery, environmental protection machinery and other fields.
6.Single row four-point contact ball slewing bearing (HS series)
The single-row four-point contact ball slewing bearing is composed of two seat rings with a compact structure and four-point contact between the steel ball and the arc raceway. It is mainly used on machinery such as truck cranes, tower cranes, excavators, pile drivers, engineering vehicles, radar scanning equipment, etc. that are subject to overturning moments, vertical axial forces, and horizontal inclination forces.
7.Single row crossed roller slewing ring bearing (HJ series)
The single-row crossed roller slewing bearing is composed of two seat rings. It has a compact structure, high manufacturing precision, small assembly clearance, and high installation accuracy requirements. The rollers are arranged in a 1:1 cross and can withstand axial force at the same time. Tipping moment and large radial force are widely used in transportation, engineering machinery and military products.
8.Single row four-point contact ball slewing bearing (Q series)
The single row four-point contact ball slewing bearing is composed of two seat rings. It has a compact structure and light weight. The steel ball and the round raceway have four-point angles. It can withstand axial force, overturning moment and large diameter at the same time. Axial force, rotary conveyors, welding operators, small and medium-sized overweight machines and excavators.
9.Shipping industry slewing bearing
Standard CB/T3669-1999. Suitable for slewing bearings of marine cranes. Also suitable for offshore crane slewing bearings.
10Double row ball slewing bearing
The double-row ball slewing bearing has two rows of rolling elements, which can bear large axial load, radial load and overturning moment at the same time, and has a higher safety factor. It can be matched with various cranes, mining equipment, excavators and other mechanical equipment.
Contact
Company:Luoyang EFANT Precision Bearing Manufacturing Co. Ltd
Address:No. 9 Jingjin North Rd, Luoxin Development Zone,
Xin'an County, Luoyang City, Henan Province 471003, China
Tel:86-379-80887690
export@efindbearing.com
https://www.efindbearing.com/contact-us
https://www.efindbearing.com/slewing-bearing/012-30-710-external-gear-slewing-bearing.html
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