When your equipment demands exceptional rotational performance within a compact footprint, a Small Slewing Bearing delivers the perfect solution. These specialized rotary components, typically ranging from 200mm to 600mm in outer diameter, are engineered to handle complex combined loads while maintaining precise positioning accuracy. Our product units integrate seamlessly into space-constrained applications where traditional bearing arrangements would be impractical, offering superior load capacity and reliability for critical industrial operations.

Mechanical Mechanical technology and Automation
The items serve as the establishment for automated arm bases and exactness situating frameworks. These applications require uncommon precision with runout resistances underneath 0.05mm and negligible backfire for repeatable errand execution.
Medical Gear Solutions
CT scanners, X-ray machines, and surgical robots depend on our heading for ultra-smooth, noise-free turn. The plan guarantees zero-backlash situating whereas supporting cantilevered imaging device loads.
Compact Development Equipment
Mini-excavators and compact loaders utilize these heading as the basic chassis-upper interface. They withstand tall stun loads from burrowing operations whereas performing dependably in rough situations containing mud and silica dust.
Solar Following Systems
Distributed photovoltaic following frameworks advantage from our IP65-rated fixed plans that handle wind loads and board tilting minutes. The orientation survive clean, dampness, and UV introduction over 20+ year lifecycles.
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Bearing Type
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Model Number
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Internal Diameter (d) mm
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External Diameter (D) mm
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Width (B) mm
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Static Load Capacity (C₀) kN
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Dynamic Load Capacity (C) kN
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Rolling Element Type
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Material
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Sealing Structure
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Lubrication Method
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Application Scenarios
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Weight kg
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Single-row Four-point Contact Ball Slewing Ring
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011.25.400
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400
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540
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48
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620
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280
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Steel Ball
|
42CrMo
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Double Lip Rubber Seal
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Lithium-based Grease (NLGI 2)
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Small cranes, aerial work platforms
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42
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|
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011.25.500
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500
|
650
|
56
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850
|
380
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Steel Ball
|
42CrMo
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Double Lip Rubber Seal
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Lithium-based Grease (NLGI 2)
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Tower cranes, port loading machinery
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68
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|
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011.25.630
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630
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800
|
65
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1200
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550
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Steel Ball
|
42CrMo
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Double Lip Rubber Seal
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Lithium-based Grease (NLGI 2)
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Mobile cranes, concrete mixers
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105
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|
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011.25.800
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800
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1000
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75
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1800
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820
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Steel Ball
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42CrMo
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Double Lip Rubber Seal + Dust Cover
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Lithium-based Grease (NLGI 2)
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Large-tonnage truck cranes
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185
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Single-row Crossed Roller Slewing Ring
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021.20.315
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315
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430
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40
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950
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420
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Crossed Roller
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42CrMo
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Metal Face Seal
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High-temperature Lithium-based Grease
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Robotic arms, precision rotary tables
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35
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|
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021.20.400
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400
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520
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45
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1500
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680
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Crossed Roller
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42CrMo
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Metal Face Seal
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High-temperature Lithium-based Grease
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CNC machine tools, radar antennas
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58
|
|
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021.20.500
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500
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650
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50
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2000
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920
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Crossed Roller
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42CrMo
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Metal Face Seal
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High-temperature Lithium-based Grease
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Precision machining centers, satellite communication equipment
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92
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|
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021.20.630
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630
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780
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55
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2800
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1250
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Crossed Roller
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42CrMo
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Metal Face Seal + Oil Seal
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High-temperature Lithium-based Grease
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Large precision rotary platforms
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145
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Double-row Ball Slewing Ring
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022.30.630
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630
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850
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70
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2500
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1100
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Double-row Steel Ball
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50Mn
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Combined Seal (Rubber + Metal)
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Grease + Periodic Oil Injection
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Medium-tonnage cranes, ship unloaders
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168
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|
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022.30.800
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800
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1060
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80
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3200
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1450
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Double-row Steel Ball
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50Mn
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Combined Seal (Rubber + Metal)
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Grease + Periodic Oil Injection
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Large cranes, wind turbine yaw systems
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245
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|
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022.30.1000
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1000
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1320
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95
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4500
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2000
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Double-row Steel Ball
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50Mn
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Combined Seal (Rubber + Metal)
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Grease + Periodic Oil Injection
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Wind turbine pitch systems, mining machinery
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380
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Three-row Roller Slewing Ring
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131.40.1000
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1000
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1400
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105
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6500
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2800
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Three-row Roller
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42CrMo
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Special Dust Seal + Oil Seal
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Centralized Lubrication System
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Heavy-duty excavators, tunnel boring machines
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520
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|
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131.40.1200
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1200
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1600
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120
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8000
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3500
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Three-row Roller
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42CrMo
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Special Dust Seal + Oil Seal
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Centralized Lubrication System
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Offshore platforms, metallurgical equipment
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750
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|
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131.40.1500
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1500
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1950
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140
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12000
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5000
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Three-row Roller
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42CrMo
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Special Dust Seal + Oil Seal
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Centralized Lubrication System
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Super heavy-duty machinery, large ship cranes
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1280
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Ball-Roller Combined Slewing Ring
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031.35.630
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630
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880
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85
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3000
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1300
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Ball + Roller
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42CrMo
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Double Lip Rubber Seal + Metal Dust Cover
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Lithium-based Grease + Periodic Oil Injection
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Mixed load machinery, port container cranes
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210
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|
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031.35.800
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800
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1100
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95
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4200
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1800
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Ball + Roller
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42CrMo
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Double Lip Rubber Seal + Metal Dust Cover
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Lithium-based Grease + Periodic Oil Injection
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Large-scale stacking machines, heavy-duty transfer equipment
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320
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Triple-Row Roller Configuration
Our Small Slewing Bearing consolidates a specialized three-row roller course of action that optimizes stack dissemination. Two pivotal roller columns handle bidirectional pushed loads and tilting minutes, whereas one spiral roller push oversees spiral powers. This stack specialization maximizes bearing productivity and disposes of stack interference.
Robust Multi-Ring Structure
The bearing highlights three precision-machined rings (inward, external, and middle of the road) that suit each roller push. This coordinates structure disposes of isolated bearing gatherings, lessening complexity and establishment space requirements.
Superior Unbending nature Performance
Line contact between rollers and raceways over all three columns gives uncommon inflexibility, essentially beating ball-type orientation. This plan minimizes avoidance beneath overwhelming loads and keeps up positional exactness amid energetic operations.

With 30 a long time of bearing industry skill, Luoyang Auto Bearing keeps up strict quality control all through generation. Our three-level assessment framework covers crude fabric confirmation, in-process checking, and comprehensive wrapped up item testing. Each bearing experiences confirmation of 12 center execution pointers, accomplishing an ex-factory capability rate surpassing 99.9%.
Heat Treatment and Accuracy Machining
We utilize high-purity bearing steel with specialized warm treatment forms and exactness pounding innovation. Our orientation exceed expectations in wear resistance, high-temperature execution, and exactness maintenance beneath requesting operational conditions.
Aerial Work Platforms
Spider cranes and man-lifts require orientation that oversee boom turn whereas dealing with noteworthy tilting minutes. Our plans guarantee smooth, jerk-free turn for administrator security and gear steadiness on uneven terrain.
Precision Instrumentation
Radar radio wires, optical location hardware, and route frameworks request ultra-precise revolution with negligible vibration. Our P4-grade orientation accomplish revolution accuracy with commotion control underneath 35dB.
Harsh Environment Applications
For hardware working in challenging conditions, we offer corrosion-resistant coatings and improved fixing frameworks. These highlights guarantee solid execution in dusty, muggy, or high-vibration situations.
Our engineering team provides complete technical support from bearing selection through installation and maintenance. We offer customized solutions based on your specific equipment parameters and operating conditions, including:
We maintain stock of over 1,000 bearing types, enabling 48-hour delivery for standard orders. For custom applications, our optimized production processes reduce delivery cycles to 70% of industry averages, with most non-standard bearings completed within 15-20 days.

Choose Luoyang Auto Bearing for your small slewing bearing requirements and benefit from three decades of engineering excellence. Our commitment to manufacturing high-quality bearings, combined with comprehensive supply chain integration, ensures you receive optimal solutions for your most demanding applications.
For technical specifications, custom engineering support, or to discuss your specific application requirements, contact our engineering team at auto@lyautobearing.com. Let us help you achieve superior rotational performance in your compact equipment designs.
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