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Help CenterDouble Row Slewing Bearing, 2.5m OD, 6-point Contact, 8.5m Rated Torque, With Grease Fittings, for Heavy Machinery
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At Henan San Kuang Machinery Technology Co., Ltd., we specialize in precision-engineered slewing bearings for demanding industrial applications. Our Double Row Slewing Bearing with a 2.5m outer diameter and 6-point contact design delivers exceptional load capacity and stability for heavy machinery. With a rated torque of 8.5m and integrated grease fittings, this bearing ensures reliable performance under extreme conditions. Backed by over a decade of manufacturing expertise (since 2014) and a 10,000-30,000 sqm factory, we provide solutions that meet international quality standards.
This bearing is engineered for applications requiring high rotational accuracy and the ability to handle combined axial, radial, and moment loads. The 6-point contact geometry optimizes the contact angle distribution, reducing wear and extending service life. Whether used in excavators, cranes, wind turbines, or offshore equipment, our product delivers consistent torque transmission and smooth operation.
Key Features & Technical Specifications
Double Row Design: Enhanced load distribution for higher axial and moment capacities.
6-Point Contact: Precise ball arrangement reduces stress concentration and improves rotational smoothness.
2.5m Outer Diameter: Suitable for large-scale machinery with demanding space requirements.
8.5m Rated Torque: Capable of handling heavy torque loads (8.5 million Nm) for robust applications.
Integrated Grease Fittings: Easy maintenance with pre-drilled lubrication ports; compatible with standard grease guns.
High-Strength Alloy Steel: Heat-treated raceways for enhanced hardness and wear resistance.
Customizable Sealing Options: Double lip seals or labyrinth seals available upon request to protect against dust and moisture.
| Parameter | Value |
|---|---|
| Outer Diameter (OD) | 2500 mm (2.5 m) |
| Inner Diameter (ID) | Customizable (typically 2000-2400 mm) |
| Number of Ball Rows | 2 |
| Contact Angle | 6-point |
| Rated Torque | 8.5 million Nm (8.5 m) |
| Static Load Capacity | Up to 20,000 kN (axial) |
| Dynamic Load Capacity | Up to 12,000 kN (axial) |
| Rotation Speed (Max) | 0.5 rpm (continuous) |
| Operating Temperature | -20°C to +80°C (customizable) |
| Lubrication | Grease fittings (1/4" NPT standard) |
| Mounting Holes | Drilled per customer drawing |
Advantages for Your Heavy Machinery
Extended Service Life: The 6-point contact design reduces point loading, minimizing pitting and spalling even under high moment loads.
Low Maintenance: Grease fittings allow quick lubrication without disassembly, reducing downtime.
Versatile Compatibility: Works with standard mounting flanges and can be customized for OEM equipment.
Rugged Construction: Heat-treated alloy steel with through-hardened raceways for resistance to shock loads.
Industries & Applications
This double row slewing bearing is designed for heavy machinery where reliability is critical. Typical applications include:
Construction Equipment: Excavators, cranes, concrete pumps, and pile drivers.
Material Handling: Stackers, reclaimers, port equipment, and mobile hoists.
Renewable Energy: Wind turbine yaw and pitch systems.
Military & Defense: Radar platforms, turret systems, and missile launchers.
Marine & Offshore: Deck cranes, pipe-laying vessels, and offshore drilling rigs.
Mining & Quarrying: Rotary crushers, screening plants, and draglines.
Why Choose Henan San Kuang Machinery?
Founded in 2014, our company has grown into a trusted manufacturer with a 10,000-30,000 square meter factory and a dedicated team of 51-100 employees. We have achieved certifications including ISO9001, ISO14000, OHSAS18001, and TL9000, ensuring our production processes meet rigorous quality and environmental standards. Our annual export value ranges from US$2.5 million to US$5 million, with products shipped to major ports such as Shanghai, Lianyungang, Qingdao, and Tianjin. We serve diverse markets across North America, South America, Europe, Southeast Asia, Africa, and Oceania.
Every slewing bearing undergoes 100% inspection for geometry, hardness, and torque capacity. We offer customized solutions including alternate materials (stainless steel, induction-hardened raceways), specialized coatings, and non-standard dimensions. Our technical team provides lifetime support, and we can deliver prototypes within 30 days.
Contact us today to discuss your specific requirements. We provide detailed dimensional drawings and load calculations free of charge. With competitive pricing and reliable lead times, Henan San Kuang is your ideal partner for heavy-duty slewing bearing solutions.
Frequently Asked Questions (FAQ)
Q: What is the difference between 4-point and 6-point contact?
A: 6-point contact uses two rows of balls with three contact points per row, providing higher moment load capacity and improved stability under combined loads compared to 4-point contact. It is ideal for applications requiring high precision and torque.Q: Can this bearing be used in extreme temperatures?
A: The standard operating temperature range is -20°C to +80°C. For higher or lower temperature environments, we can supply special low-temperature steel or high-temperature grease. Please specify your requirements.Q: How often should I lubricate the bearing?
A: Lubrication intervals depend on operating conditions. For heavy-duty continuous use, we recommend regreasing every 50-100 hours of operation. The grease fittings allow easy access. Use NLGI #2 lithium-based grease as a standard.Q: Is the mounting hole pattern standard or customized?
A: We can drill mounting holes according to your drawing or provide a standard pattern (e.g., 24 holes equally spaced on the outer ring). Simply provide your bolt circle diameter and hole size.Q: Do you offer sealing options for dusty environments?
A: Yes, we offer double lip rubber seals, labyrinth seals, or metal shields. For extremely dusty conditions, labyrinth seals with a grease purge system are recommended.Q: What is the lead time for this bearing?
A: Standard lead time is 30-45 days after order confirmation. For custom dimensions or urgent orders, expedited production can be arranged with a surcharge.Q: Can you provide load capacity calculations?
A: Yes, our engineering team can perform static and dynamic load calculations based on your application parameters. We provide a detailed report with safety factors.Q: What certifications do your bearings comply with?
A: Our bearings are manufactured under ISO9001, ISO14000, and OHSAS18001 certified processes. We can also provide material certificates and test reports upon request.
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