/ Slewing Bearing

Heavy-Duty 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/42CrMo4/36Mn
Product Description

Heavy-Duty Slewing Bearing | Triple-Row Roller Design for Maximum Load Capacity

Overview

When your equipment demands maximum load capacity and precision under extreme conditions, the Heavy-Duty Slewing Bearing delivers uncompromising performance. This large-diameter rotational bearing handles axial, radial, and tilting moment loads simultaneously in critical heavy machinery applications. The product features a specialized triple-row roller configuration that distributes loads across dedicated roller sets, ensuring optimal performance where conventional bearings fail. Engineered for bucket-wheel excavators, mobile cranes, and harbor equipment, these bearings provide the structural backbone for machinery operating in the most demanding industrial environments.

Heavy-Duty Slewing Bearing

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

How Heavy-Duty Slewing Bearings Work?

Triple-Row Roller Configuration

The Heavy-Duty Slewing Bearing employs a sophisticated load distribution system through its three-row design:

  • Two axial roller rows (upper and lower) handle bidirectional thrust loads and tilting moments
  • One radial roller row (middle) absorbs radial forces perpendicular to the rotation axis
  • 90° crossed arrangement in axial rows ensures full line contact with raceways

This load specialization eliminates interference between different force types while maximizing bearing efficiency.

Multi-Ring Structure

The bearing consists of three precision-machined rings: inner ring, outer ring, and intermediate ring. Each ring houses dedicated raceways for specific roller rows. This integrated approach eliminates the complexity of multiple bearing assemblies while reducing installation space requirements.

Heavy-Duty Slewing Bearing

Key Performance Advantages

Prevalent Stack Capacity

The specialized roller arrangement empowers taking care of of extraordinary combined loads. Outspread loads reach a few hundred tons whereas tilting minutes can surpass thousands of kN·m. This makes the bearing reasonable for applications where routine heading would involvement disastrous overload.

Enhanced Inflexibility and Precision

Line contact between rollers and raceways over all three columns gives extraordinary inflexibility. The plan essentially outflanks ball-type or single-row roller heading in keeping up positional exactness beneath energetic loads. Negligible diversion guarantees exact rotational situating indeed amid fast movement changes.

Compact Plan Solution

Despite heavy-duty execution capabilities, the coordinates three-row structure offers a more compact impression than multi-bearing gatherings. This space proficiency demonstrates especially profitable in expansive gear where establishment limitations restrain plan options.

Extended Benefit Life

Load specialization decreases wear designs and stretch concentrations over roller lines. High-quality bearing steel materials combined with accuracy fabricating improve weariness resistance. Pre-lubricated fixed variations amplify re-lubrication interims, minimizing operational downtime.

Applications and Industries

Heavy Construction Equipment

  • Bucket-wheel excavators requiring precise material handling
  • Mobile cranes operating in harsh construction environments
  • Tower cranes with demanding load cycling requirements

Marine and Port Operations

  • Ship-mounted cranes handling container loads
  • Harbor cranes with continuous operation cycles
  • Offshore platform rotating equipment

Industrial Manufacturing

  • Ladle turrets in steel production facilities
  • Heavy-duty machining centers requiring precision
  • Large-scale material handling systems

Customization Options

Adapt Integration

Choose from inner equip, outside equip, or gearless plans based on your torque transmission prerequisites. Adapted variations back coordinate rotational control for heavy-duty applications.

Environmental Protection

Double-lip fixed orientation come pre-lubricated with high-temperature oil and give tidy and water resistance. Open-type arrangements suit controlled, clean environments.

Material Selection

Standard high-strength chromium steel incorporates carburizing and extinguishing warm treatment. Discretionary stainless steel or specialized coatings give improved erosion resistance for marine applications.

Quality Assurance and Delivery

Our fabricating prepare takes after strict quality control conventions with three-level assessment frameworks. Each bearing experiences confirmation of 12 center execution markers counting vibration testing and life cycle approval. We keep up an ex-factory capability rate surpassing 99.9%.

Standard heading dispatch inside 48 hours from our stock of over 1,000 bearing sorts. Custom setups utilize optimized measured generation forms, decreasing conveyance times to 70% of industry midpoints. Expansive custom orientation up to φ3000mm regularly dispatch inside 15-20 days.

Technical Support and Engineering Services

Our experienced designing group gives comprehensive specialized bolster all through your venture lifecycle. Administrations incorporate on-site estimation for hardware adjustment, establishment direction, and preventive upkeep arranging. We keep up 24-hour specialized interview accessibility to minimize gear downtime risks.

For applications requiring exact fit confirmation, we offer worldwide on-site mapping administrations utilizing proficient estimation rebellious. This guarantees 100% compatibility between heading and existing gear, especially profitable for retrofitting more seasoned apparatus.

Heavy-Duty Slewing Bearing

Get Started with Your Heavy-Duty Solution

The Heavy-Duty Slewing Bearing represents three decades of engineering expertise in demanding industrial applications. Our team stands ready to analyze your specific requirements and recommend the optimal bearing configuration for your equipment needs.

Contact our engineering specialists at auto@lyautobearing.com to discuss your application requirements. We provide detailed technical consultation, performance analysis, and customized solutions that ensure reliable operation in your most challenging environments.

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