/ Slewing Bearing

Mini Excavator Swing 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/42CrMo4/19Mn
Product Description

Mini Excavator Swing Bearing: Essential Component for Compact Equipment Performance

When your compact excavator operates in tight construction sites or utility trenching projects, the Mini Excavator Swing Bearing serves as the critical rotational interface between the upper structure and undercarriage. This specialized slewing ring enables smooth 360-degree rotation while supporting the combined loads of digging, lifting, and slewing operations in equipment typically under 6 tons operating weight. Our swing bearings feature precision-engineered raceways and integral gearing designed specifically for the demanding requirements of compact construction machinery.

Mini Excavator Swing Bearing

What Makes Our Mini Excavator Swing Bearing Different?

Single-Row Four-Point Contact Design

Our bearing utilizes a single-row ball setup with four-point contact geometry. This plan disseminates pivotal powers, spiral loads, and tilting minutes over four contact focuses per ball. The course of action guarantees ideal stack conveyance whereas keeping up compact measurements fundamental for smaller than expected excavator applications.

Induction-Hardened Raceways

The raceway surfaces experience exactness acceptance solidifying to accomplish 58-62 HRC surface hardness. This treatment expands 3-5mm underneath the surface, giving extraordinary resistance to contact push and anticipating untimely spalling beneath swaying loads common in trenching operations.

Integrated Adapt Alternatives

Available configurations include:

  • Internal gear design: Protects gear teeth from debris contamination
  • External gear design: Enables easier maintenance access
  • Gearless configuration: For hydraulic motor direct-drive applications

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 in Real Applications

Urban Development Sites

In restricted urban situations, your excavator faces visit halfway revolutions and tight maneuvering. Our Mini Excavator Swing Bearing delivers smooth operation through exactness ball dispersing and low-friction seal plan. This avoids the jerky developments that can harm underground utilities amid cautious uncovering work.

Demolition Operations

During insides pulverization, falling flotsam and jetsam and tidy make challenging conditions. The double-lip seal framework anticipates defilement whereas the vigorous raceway geometry withstands vertical stun loads transmitted from water powered breakers through the boom structure.

Agricultural Applications

Operating on uneven landscape makes critical tilting minutes. Our four-point contact plan disperses these topsy-turvy loads viably, keeping up steadiness amid twist drill penetrating or fabric taking care of on slants.

Mini Excavator Swing Bearing

Quality Control and Manufacturing Process

Three-Level Quality Assurance

Our manufacturing process includes comprehensive quality control:

  1. Raw Material Inspection: Chemical composition verification and mechanical property testing of bearing steel
  2. In-Process Monitoring: Dimensional accuracy checks during machining and heat treatment validation
  3. Final Product Testing: Complete dimensional inspection, vibration testing, and torque measurement

Heat Treatment Process

We employ controlled atmosphere heat treatment followed by precision grinding. This process achieves uniform hardness distribution and maintains tight dimensional tolerances critical for proper fit and performance.

Installation and Maintenance Guidelines

Proper Installation Procedures

Correct installation requires clean mounting surfaces and proper bolt torque sequence. Follow the manufacturer's specified torque values and tightening pattern to ensure even load distribution across the bolt circle.

Lubrication Schedule

Regular greasing through the designated fittings maintains optimal performance. Apply grease until clean lubricant appears at the seals, indicating complete distribution throughout the raceway.

Warning Signs of Wear

Monitor for these indicators:

  • Unusual noise during rotation
  • Binding or tight spots in swing movement
  • Metallic particles in expelled grease
  • Excessive backlash in positioning

Why Choose Luoyang Auto Bearing?

With 30 a long time of bearing fabricating encounter, we get it the particular requests of compact development hardware. Our comprehensive approach combines free generation of center components with vital supply chain integration to provide total bearing solutions.

Manufacturing Capabilities

We create standard orientation up to φ5000mm distance across whereas specializing in customized arrangements for special applications. Our secluded generation handle diminishes conveyance times for non-standard heading to 70% of industry average.

Quality Commitment

Our three-level quality control framework guarantees over 99.9% capability rate. Each bearing experiences confirmation of 12 center execution pointers counting vibration testing and stack capacity validation.

Supply Chain Efficiency

We keep up stock of over 1,000 bearing sorts for standard items with 48-hour conveyance capability. For custom item prerequisites, our streamlined generation prepare regularly conveys inside 15-20 days.

Mini Excavator Swing Bearing

Technical Support Services

Global Benefit Network

Our experienced designing group gives around the world specialized bolster counting on-site mapping administrations for substitution applications and establishment direction to avoid gear failures.

Full Lifecycle Management

We offer comprehensive bearing administration from introductory choice through substitution arranging. This incorporates farther checking capabilities and prescient support planning to optimize your hardware uptime.

For technical specifications or application assistance with Mini Excavator Swing Bearing solutions, contact our engineering team at auto@lyautobearing.com. Our specialists can provide detailed recommendations based on your specific equipment requirements and operating conditions.

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