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.

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:
This configuration makes them essential for heavy equipment where multiple forces act simultaneously during rotation.
|
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
|
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
|
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
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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
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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
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Combined Seal (Rubber + Metal)
|
Grease + Periodic Oil Injection
|
Wind turbine pitch systems, mining machinery
|
380
|
|
Three-row Roller Slewing Ring
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131.40.1000
|
1000
|
1400
|
105
|
6500
|
2800
|
Three-row Roller
|
42CrMo
|
Special Dust Seal + Oil Seal
|
Centralized Lubrication System
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Heavy-duty excavators, tunnel boring machines
|
520
|
|
|
131.40.1200
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1200
|
1600
|
120
|
8000
|
3500
|
Three-row Roller
|
42CrMo
|
Special Dust Seal + Oil Seal
|
Centralized Lubrication System
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Offshore platforms, metallurgical equipment
|
750
|
|
|
131.40.1500
|
1500
|
1950
|
140
|
12000
|
5000
|
Three-row Roller
|
42CrMo
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Special Dust Seal + Oil Seal
|
Centralized Lubrication System
|
Super heavy-duty machinery, large ship cranes
|
1280
|
|
Ball-Roller Combined Slewing Ring
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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
|
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:

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.
Our three-level quality control system ensures consistent performance:
Each bearing undergoes testing of 12 core performance indicators before shipment. Our qualification rate exceeds 99.9% for reliable field performance.
Proper installation ensures optimal performance and service life. Our engineering team provides:
Regular monitoring through vibration analysis and temperature sensors helps prevent unexpected failures.

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.
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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