/ Slewing Bearing

Slewing Ring 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/42CrMo4/21Mn
Product Description

Triple-Row Roller Slewing Ring Bearing: Heavy-Duty Rotational Solutions

When your equipment demands exceptional load capacity and precision under extreme conditions, a Slewing Ring Bearing with triple-row roller configuration delivers unmatched performance. This specialized bearing system combines three dedicated roller rows to handle massive axial, radial, and moment loads simultaneously. The robust design makes it the preferred choice for heavy industrial equipment where standard bearings fail. Our product solutions provide reliable rotation support for demanding applications across metallurgy, construction, and marine industries.

Slewing Ring Bearing

Product Overview

The triple-row roller product represents the pinnacle of heavy-duty rotational technology. This bearing system features three separate roller rows within a single unit, each optimized for specific load types. The configuration delivers superior load distribution and rigidity compared to single-row or ball-type alternatives.

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

Advanced Design Features

Triple-Row Stack Specialization

The bearing joins three unmistakable roller rows:

Two Pivotal Roller Lines: Handle bidirectional pivotal loads and tilting minutes. These rollers adjust parallel to the bearing's hub heading, giving devoted pushed stack support.

One Outspread Roller Push: Particularly oversees outspread strengths with rollers situated opposite to the pivotal columns. This division avoids stack obstructions and maximizes efficiency.

90° Crossed Arrangement

The round and hollow rollers in hub columns utilize a 90° substituting setup. This course of action guarantees full line contact with raceways, upgrading inflexibility and minimizing flexible distortion beneath overwhelming loads.

Multi-Ring Structure

The three-ring development (inward, external, and halfway rings) gives precision-machined raceways for each roller push. This coordinates plan dispenses with isolated bearing congregations whereas lessening establishment complexity.

Slewing Ring Bearing

Performance Advantages

Exceptional Load Capacity

Our Slewing Ring Bearing handles ultra-heavy combined loads including radial forces up to several hundred tons and tilting moments reaching thousands of kN·m. This capability suits large-scale equipment where conventional bearings prove inadequate.

Superior Rigidity

Three-row line contact design minimizes deflection under heavy loads or rapid motion changes. This maintains positional accuracy for precision applications requiring stable rotational control.

Compact Installation

Despite heavy-duty performance, the integrated structure offers a compact footprint compared to multi-bearing assemblies. This proves valuable for large equipment with limited installation space.

Customization Options

Gear Integration

  • External gear: Direct torque transmission for heavy-duty rotational control
  • Internal gear: Space-efficient design for enclosed applications
  • Gearless: Clean configuration for specialized mounting requirements

Protection Systems

  • Double-lip sealed: Pre-lubricated with high-temperature grease, dust and water resistant
  • Open-type: Suitable for clean, controlled environments

Material Options

  • Standard: High-strength chromium steel with carburizing treatment
  • Corrosion-resistant: Stainless steel or zinc/nickel plating for marine applications
  • Special alloys: Custom materials for extreme temperature or chemical environments

Applications

The triple-row roller bearing excels in heavy equipment applications:

  • Mining Equipment: Bucket-wheel excavators, dragline cranes
  • Construction Machinery: Mobile cranes, tower cranes
  • Marine Applications: Ship cranes, offshore platforms
  • Metallurgical Equipment: Ladle turrets, furnace positioning systems
  • Port Machinery: Container cranes, bulk material handlers

Quality Assurance

Our manufacturing process incorporates a three-level quality control system:

  1. Raw Material Inspection: Verification of steel composition and properties
  2. In-Process Inspection: Dimensional and surface quality monitoring
  3. Finished Product Testing: Complete verification of 12 core performance indicators

Each bearing experiences vibration testing and life testing confirmation. Our ex-factory capability rate surpasses 99.9%, guaranteeing dependable execution in unforgiving mechanical conditions.

Service and Support

Fast Conveyance System

We keep up stock of over 1,000 standard bearing sorts for 48-hour conveyance. Custom non-standard orientation utilize optimized secluded generation, accomplishing conveyance cycles 70% quicker than industry average.

Technical Support

Our group gives comprehensive establishment direction, operation observing, and upkeep arranging. Worldwide on-site mapping administrations guarantee idealize hardware adjustment for substitution scenarios.

Full-Lifecycle Management

From starting determination through end-of-life substitution, we offer total bearing lifecycle back counting farther checking, preventive upkeep, and execution optimization.

Slewing Ring Bearing

Why Choose Our Slewing Ring Bearings?

With 30 a long time of bearing industry involvement, we combine autonomous fabricating capabilities with broad supply chain integration. Our comprehensive R&D and fabricating offices handle both standard generation and specialized customization requirements.

Our heading exceed expectations in wear resistance, high-temperature execution, and accuracy maintenance. Metallurgical applications withstand 500℃ temperatures beneath overwhelming loads, whereas accuracy variations accomplish P4-level precision with clamor control underneath 35dB.

The efficient supply chain and quality control systems ensure consistent product availability and performance reliability. Whether you need immediate delivery of standard products or custom engineering for unique applications, our Slewing Ring Bearing solutions provide the robust performance your equipment demands.

For technical specifications or custom bearing requirements, contact our engineering team at auto@lyautobearing.com. We provide detailed application analysis and recommend optimal bearing solutions for your specific operating conditions.

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