/ Slewing Bearing

Crossed Roller Slewing Bearing

1. Type: External gear, Internal gear, No gear
2. 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.
3. 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.
4. Material:50Mn/42CrMo/S48C/42CrMo4/40Mn
Product Description

Crossed Roller Slewing Bearing - High-Precision Rotational Solutions for Heavy-Duty Applications

When your equipment demands exceptional precision and reliability under extreme loads, our Crossed Roller Slewing Bearing delivers unmatched performance. This advanced bearing technology combines the load-carrying capacity of traditional slewing rings with the precision positioning of crossed roller design. Our bearings support combined axial, radial, and moment loads while maintaining tight rotational accuracy. Engineered for applications where conventional bearings fail, these units provide superior rigidity and extended service life in demanding industrial environments.

Crossed Roller Bearing
RU Series Crossed Roller Bearing

What is a Crossed Roller Slewing Bearing?

A item speaks to a specialized rotational bearing plan that coordinating round and hollow rollers organized in a exact 90-degree crossed design. This setup empowers the bearing to handle significant combined loads whereas keeping up uncommon rotational accuracy.

The bearing structure highlights round and hollow rollers situated then again at right points to each other inside a single raceway. This course of action guarantees that pivotal powers from both headings, outspread loads, and tilting minutes are dispersed equally over the rolling components. The result is predominant stack dispersion compared to customary ball-type slewing orientation.

Design Structure and Working Principle

Core Structure Components

The bearing consists of three primary elements:

  • Inner and outer rings with precision-machined raceways
  • Cylindrical rollers arranged in crossed configuration
  • Separator elements maintaining proper roller spacing

Working Principle

The crossed arrangement allows each roller to contact the raceway along its full length, creating optimal load distribution. When loads are applied, alternating rollers handle different load directions, eliminating the need for separate thrust and radial bearing assemblies.

This design principle ensures that your equipment benefits from reduced deflection under load and improved rotational accuracy compared to traditional bearing configurations.

Key Technical Specifications

Bearing Type
Model Number
Internal Diameter (d) mm
External Diameter (D) mm
Width (B) mm
Static Load Capacity (C₀) kN
Dynamic Load Capacity (C) kN
Rolling Element Type
Material
Sealing Structure
Lubrication Method
Application Scenarios
Weight kg
Single-row Four-point Contact Ball Slewing Ring
011.25.400
400
540
48
620
280
Steel Ball
42CrMo
Double Lip Rubber Seal
Lithium-based Grease (NLGI 2)
Small cranes, aerial work platforms
42
 
011.25.500
500
650
56
850
380
Steel Ball
42CrMo
Double Lip Rubber Seal
Lithium-based Grease (NLGI 2)
Tower cranes, port loading machinery
68
 
011.25.630
630
800
65
1200
550
Steel Ball
42CrMo
Double Lip Rubber Seal
Lithium-based Grease (NLGI 2)
Mobile cranes, concrete mixers
105
 
011.25.800
800
1000
75
1800
820
Steel Ball
42CrMo
Double Lip Rubber Seal + Dust Cover
Lithium-based Grease (NLGI 2)
Large-tonnage truck cranes
185
Single-row Crossed Roller Slewing Ring
021.20.315
315
430
40
950
420
Crossed Roller
42CrMo
Metal Face Seal
High-temperature Lithium-based Grease
Robotic arms, precision rotary tables
35
 
021.20.400
400
520
45
1500
680
Crossed Roller
42CrMo
Metal Face Seal
High-temperature Lithium-based Grease
CNC machine tools, radar antennas
58
 
021.20.500
500
650
50
2000
920
Crossed Roller
42CrMo
Metal Face Seal
High-temperature Lithium-based Grease
Precision machining centers, satellite communication equipment
92
 
021.20.630
630
780
55
2800
1250
Crossed Roller
42CrMo
Metal Face Seal + Oil Seal
High-temperature Lithium-based Grease
Large precision rotary platforms
145
Double-row Ball Slewing Ring
022.30.630
630
850
70
2500
1100
Double-row Steel Ball
50Mn
Combined Seal (Rubber + Metal)
Grease + Periodic Oil Injection
Medium-tonnage cranes, ship unloaders
168
 
022.30.800
800
1060
80
3200
1450
Double-row Steel Ball
50Mn
Combined Seal (Rubber + Metal)
Grease + Periodic Oil Injection
Large cranes, wind turbine yaw systems
245
 
022.30.1000
1000
1320
95
4500
2000
Double-row Steel Ball
50Mn
Combined Seal (Rubber + Metal)
Grease + Periodic Oil Injection
Wind turbine pitch systems, mining machinery
380
Three-row Roller Slewing Ring
131.40.1000
1000
1400
105
6500
2800
Three-row Roller
42CrMo
Special Dust Seal + Oil Seal
Centralized Lubrication System
Heavy-duty excavators, tunnel boring machines
520
 
131.40.1200
1200
1600
120
8000
3500
Three-row Roller
42CrMo
Special Dust Seal + Oil Seal
Centralized Lubrication System
Offshore platforms, metallurgical equipment
750
 
131.40.1500
1500
1950
140
12000
5000
Three-row Roller
42CrMo
Special Dust Seal + Oil Seal
Centralized Lubrication System
Super heavy-duty machinery, large ship cranes
1280
Ball-Roller Combined Slewing Ring
031.35.630
630
880
85
3000
1300
Ball + Roller
42CrMo
Double Lip Rubber Seal + Metal Dust Cover
Lithium-based Grease + Periodic Oil Injection
Mixed load machinery, port container cranes
210
 
031.35.800
800
1100
95
4200
1800
Ball + Roller
42CrMo
Double Lip Rubber Seal + Metal Dust Cover
Lithium-based Grease + Periodic Oil Injection
Large-scale stacking machines, heavy-duty transfer equipment
320

Performance Advantages

Predominant Stack Distribution

The crossed roller setup gives line contact between rollers and raceways. This plan disperses loads more successfully than point contact found in ball heading, coming about in higher stack capacity and decreased stretch concentrations.

Enhanced Rigidity

Multiple contact focuses over the crossed roller course of action make uncommon bearing inflexibility. Your gear encounters negligible diversion beneath shifting loads, keeping up exact situating indeed amid energetic operations.

Compact Plan Benefits

A single Crossed Roller Slewing Bearing replaces numerous customary bearing congregations. This integration decreases establishment complexity, spares space, and brings down in general hardware weight whereas making strides reliability.

Precision Performance

Tight fabricating resistances guarantee reliable rotational exactness. The bearing keeps up exact situating beneath stack, making it perfect for applications requiring correct precise situating.

Crossed Roller Bearing

Application Areas

Industrial Machinery

  • Turntables for machining centers
  • Rotary tables in manufacturing equipment
  • Indexing mechanisms
  • Robotic arm joints

Construction Equipment

  • Excavator swing mechanisms
  • Mobile crane turntables
  • Concrete pump truck articulation
  • Material handling equipment

Marine and Offshore

  • Ship crane pedestals
  • Offshore platform equipment
  • Port machinery rotary systems
  • Wind turbine yaw systems

Medical and Scientific Equipment

  • CT scanner gantries
  • Precision measurement instruments
  • Laboratory automation systems
  • Telescope mounts

Quality Control and Manufacturing Excellence

Our fabricating handle joins progressed warm treatment procedures and accuracy pounding innovation. Each bearing experiences comprehensive testing counting vibration examination, stack testing, and dimensional verification.

We keep up a three-tier quality control framework covering crude fabric assessment, in-process checking, and total wrapped up item approval. This approach guarantees steady quality with over 99.9% first-pass acknowledgment rates.

Installation and Maintenance Guidelines

Mounting Considerations

Proper establishment requires consideration to mounting surface levelness and jolt torque details. The bearing mounting surfaces ought to be machined to accomplish ideal stack dissemination over the bearing interface.

Lubrication Requirements

Regular oil upkeep amplifies bearing life essentially. We prescribe high-quality lithium-based oil for standard applications, with re-lubrication interims based on working conditions and stack factors.

Operational Monitoring

Monitor bearing execution through vibration investigation and temperature estimation. Early location of operational changes makes a difference anticipate hardware downtime and amplifies bearing benefit life.

Customization Options

We give comprehensive customization administrations to coordinate your particular application necessities. Our designing group analyzes your working conditions to prescribe ideal bearing configurations.

Customization choices incorporate extraordinary materials for destructive situations, altered fixing courses of action, and application-specific adapt proportions. Non-standard sizes are accessible with conveyance times diminished to 70% of industry midpoints through our optimized generation processes.

Crossed Roller Bearing​​​​​​​

Technical Support and Service

Our experienced building group gives comprehensive specialized bolster all through the bearing lifecycle. Administrations incorporate application examination, establishment direction, and operational troubleshooting.

For complex establishments or specialized applications, we offer on-site specialized help and custom mounting arrangements. Our worldwide back arrange guarantees responsive benefit notwithstanding of your location.

Why Choose Our Crossed Roller Slewing Bearing Solutions?

With 30 a long time of bearing fabricating involvement, we get it the basic execution necessities of mechanical applications. Our coordinates approach combines accuracy fabricating with comprehensive back services.

We keep up broad stock of standard setups for fast conveyance, whereas our adaptable fabricating capabilities bolster custom necessities proficiently. Quality administration frameworks guarantee reliable execution over all item lines.

Our Crossed Roller Slewing Bearing technology represents the optimal solution for applications demanding high precision, heavy load capacity, and reliable operation. Contact our technical team at auto@lyautobearing.com to discuss your specific application requirements and discover how our bearing solutions can enhance your equipment performance.

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