Slewing bearings
HGT Slewing Bearings
The HGT Slewing Bearings include Four-Point Contact Ball Slewing Bearings, Crossed Roller Slewing Bearings, and Three-Row Roller Slewing Bearings. Designed for large axial, radial, and moment loads, they ensure smooth rotation and reliable performance in heavy-duty and precision applications such as cranes, excavators, wind turbines, and industrial robots.
Difference between Three Types of Slewing Bearings (Four-Point Contact Ball, Crossed Roller, and Three-Row Roller Type)
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Four-Point Contact Ball Slewing Bearings feature a single-row ball structure with four-point contact between balls and raceways, capable of carrying combined axial and radial loads with medium torque.
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Crossed Roller Slewing Bearings use cylindrical rollers arranged in a cross pattern, offering high stiffness, precision, and the ability to withstand large moment loads with compact structure.
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Three-Row Roller Slewing Bearings have three independent rows of rollers, providing the highest load capacity and rigidity, ideal for heavy-duty equipment such as port cranes and mining machinery.
Crossed Roller Bearings HXU series
HXU series Crossed roller bearing(Integrated Inner/Outer Ring Type)The mounting holes of HXU series are provided, this model does not require a presser flange or housing. In addition, because it has an integrated inner/outer ring structure and is equipped with washers, its performance is minimally affected by the mounting procedure, ensuring stable rotation accuracy and torque. XU series can be used for both inner-ring rotation and outer-ring rotation.
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HXSU series Crossed Roller Bearings
HXSU sealed series Crossed Roller Bearings of high rigidity cross roller bearing inner and outer rings are with the overall structure, with high rigidity, and with mounting holes, no bearing flange and installation, to a large extent simplify the installation process, and does not affect the mounting accuracy, with high precision and high torque rotation, but also free to choose the inner or outer ring rotation mode in accordance with the accuracy requirements, with greater freedom of choice. It differs HRU is sealed structure using double-sided spring reed seal, and dimensions are more compact than HRU series, more suitable for small mounting space installed.
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Cross Roller Slewing Bearing
For No Gear Type
Inner Diameter: 320-4272mm ,Outer Diameter: 550-4726mm
Weight: 85.6-3100kg
For Internal Gears Type
Inner Diameter: 398-4272mm ,Outer Diameter: 602-4726mm
Weight: 80-3100kg
For External gear type
Inner Diameter: 398-4272mm ,Outer Diameter: 602-4726mm
Weight: 80-3100kg
Feature: Cross cylindrical roller slewing bearings main structural characteristics: 1:1 cross arrangement of cylindrical rollers.The bearing with this structure features high stability, high precision, and high impact resistance. For example, the cannon's rotary base uses this kind of bearing.
Application: Slewing bearings are widely used in cranes, excavation machines, construction machinery, port cargo handling machinery, large turnplates of high precision radars and missile launchers, etc.
Material: 50Mn/42CrMo/S48C/42CrMo4/16Mn
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Four-point Contact Ball Slewing Bearing
For No Gear Type
Inner Diameter: 260-4272mm ,Outer Diameter: 480-4726mm
Weight: 55-4000kg
For Internal Gear Type
Inner Diameter: 458-4272mm ,Outer Diameter:662-4726mm
Weight: 94-4000kg
For External Gear Type
Inner Diameter: 470-4272mm ,Outer Diameter: 694-4726mm
Weight: 93.1-4000kg
Feature: Four-point contact ball slewing bearings contact angle is usually 35°. If there is only a radial load, each steel ball contacts the raceway at four points. If there is only a unidirectional axial load, each steel ball contacts the raceway at two points. It can bear axial loads in two directions as well as a certain eccentric load, i.e. torque. Such kind of bearing has features and properties of both single-row and double-row angular contact ball bearings. If it is used in a high-speed scenario, two-point contact must be ensured for its normal working.
Material: 50Mn/42CrMo/S48C/42CrMo4/16Mn
Four point contact ball slewing bearings are designed to accommodate combined axial, radial, and tilting moment loads within a compact and efficient structure. Featuring a single row of balls with four-point contact geometry, this bearing type provides excellent load-carrying capacity in all load directions while maintaining smooth rotation and precise positioning.
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Triple Row Roller Slewing Bearings
Feature: The Triple-row Roller Slewing Bearing has three seating rings, which separate the upper, lower and radial raceways. It can specify the loads of each row of rollers. Moreover, its load carrying capacity and it can bear different loads simultaneously. The solid structure and the large axial and radial dimensions.
Application: It is applicable to the heavy equipment with large diameter such as bucket-wheel excavator, wheeled crane, ship crane, harbor crane, ladle turrets and heavy-duty mobile crane, etc.
Material: 50Mn/42CrMo/S48C/42CrMo4/16Mn
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