/ Slewing Bearing

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/42CrMo4/26Mn
Product Description

Roller Slewing Bearing - Triple Row Industrial Solutions

When your heavy machinery demands precision under extreme loads, a Roller Slewing Bearing delivers unmatched performance. These large-diameter rotational bearings support combined axial, radial, and moment loads simultaneously. Our triple-row products feature specialized roller configurations that distribute loads efficiently across three separate rows. With 30 years of bearing manufacturing experience, we provide reliable solutions for construction, marine, and industrial equipment requiring stable rotation under challenging conditions.

Roller Slewing Bearing

What is a Roller Slewing Bearing?

A product is a large turntable bearing designed to handle combined loading conditions in rotating applications. Unlike conventional bearings that handle single load types, these bearings accommodate multiple force directions simultaneously.

The triple-row design separates load handling into dedicated sections:

  • Two axial roller rows manage thrust forces and tilting moments
  • One radial roller row handles side loads
  • Each row operates independently for optimal load distribution

This configuration makes them essential for heavy equipment where multiple forces act simultaneously during rotation.

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

Design Features and Benefits

Triple-Row Stack Specialization

The three-ring structure isolates stack taking care of effectively. Two hub lines utilize round and hollow rollers organized at 90° points for greatest contact. The outspread push handles side powers autonomously. This partition anticipates stack impedances and maximizes Roller Slewing Bearing capacity.

Superior Stack Capacity

Line contact between rollers and precision-machined raceways disperses strengths equally. This plan underpins outspread loads coming to a few hundred tons whereas keeping up rotational exactness. Heavy-duty applications advantage from this vigorous stack distribution.

Enhanced Rigidity and Precision

The multi-row setup gives extraordinary firmness compared to single-row plans. Negligible diversion beneath energetic loads guarantees reliable situating exactness. P4-grade exactness alternatives accomplish tight resiliences for basic applications.

Versatile Arrangement Choices

Available configurations include:

  • Geared variants: Direct torque transmission for rotational control
  • Sealed designs: Pre-lubricated with extended service intervals
  • Corrosion protection: Specialized coatings for marine environments
  • Custom materials: Application-specific alloys for extreme conditions

Roller Slewing Bearing

Industrial Applications

Development Equipment

Excavators, versatile cranes, and concrete pumps depend on these orientation for boom turn and turntable capacities. The compact plan fits space-constrained establishments whereas giving fundamental stack capacity.

Marine and Offshore

Ship cranes, seaward stages, and harbor hardware require corrosion-resistant adaptations. Fixed plans ensure against saltwater entrance whereas keeping up smooth operation.

Metallurgical Industry

Ladle turrets and steel process hardware work in high-temperature situations. Specialized warm treatment empowers operation up to 500℃ with expanded benefit life.

Port Machinery

Container cranes and fabric handlers advantage from stun resistance and high-frequency operation capability. Exactness control guarantees exact stack situating.

Quality Assurance

Our three-level quality control system ensures consistent performance:

  1. Raw Material Inspection: High-purity bearing steel verification
  2. In-Process Monitoring: Dimensional accuracy and heat treatment validation
  3. Final Testing: Vibration testing and life cycle verification

Each bearing undergoes testing of 12 core performance indicators before shipment. Our qualification rate exceeds 99.9% for reliable field performance.

Installation and Maintenance

Proper installation ensures optimal performance and service life. Our engineering team provides:

  • On-site dimensional mapping for retrofit applications
  • Installation guidance and technical support
  • Lubrication schedule recommendations
  • Predictive maintenance programs

Regular monitoring through vibration analysis and temperature sensors helps prevent unexpected failures.

Roller Slewing Bearing

Supply and Delivery

We maintain stock of over 1,000 standard bearing types for immediate delivery. Standard orders ship within 48 hours. Custom product solutions benefit from our streamlined production process, reducing typical delivery times by 30%.

Our modular manufacturing approach handles non-standard requirements efficiently. Large custom bearings up to φ3000mm deliver within 15-20 days.

Why Choose Our Roller Slewing Bearings?

With three decades of bearing expertise, we understand the critical role these components play in your equipment reliability. Our integrated R&D and manufacturing capabilities ensure consistent quality from design through delivery.

We focus on engineering solutions rather than generic products. Each Roller Slewing Bearing undergoes application-specific optimization for your operating conditions.

Ready to discuss your bearing requirements? Contact our engineering team at auto@lyautobearing.com for technical consultation and custom solutions tailored to your application needs.

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