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Trusted Manufacturer of Slewing Bearings & Large Machined Components

Company Telephone: +86 158 3855 3230

E-mail Address: mia@hgb-bearing.com

WhatsApp: 8615838553230

Company Location：NO9, Sanxi Road, Ximagou Industry Park, Jianxi district, Luoyang, Henan, China

131.50.3150 slewing bearing manufacturer

Verified 131.50.3150 Slewing Bearing Manufacturer Technical Capacity

When your project demands the structural integrity of a 3.4-meter diameter component, ensuring your manufacturing partner possesses the actual engineering depth and factory scale is critical for operational safety. You require transparent verification of metallurgical standards and machining precision to protect your business from the risks of catastrophic mechanical failure.

Procuring a heavy-duty 131.50.3150 slewing bearing manufacturer for critical infrastructure like port cranes or bucket-wheel excavators involves more than comparing prices; it requires rigorous verification of a manufacturer's true industrial capacity. In an industry where intermediaries often mask their lack of production facilities, the primary challenge for your engineering team is validating that a supplier can handle the metallurgical complexity and precision machining required for a 3432mm outer diameter component. Relying on an unverified source for such high-stakes equipment introduces unacceptable risks regarding material fatigue, gear failure, and expensive operational downtime.

Luoyang Heng Guan Bearing Technology Co.,Ltd addresses these concerns by providing direct transparency into the fabrication of the 131.50.3150 slewing bearing. This specific three-row cylindrical roller slewing bearing is engineered for maximum load capacity, featuring an external gear with 174 teeth designed for high-torque transmission. The production process utilizes 42CrMo or 50Mn forged rings paired with GCr15 rollers, ensuring the 5000kg unit maintains structural integrity under extreme axial and radial loads. By integrating the gear mechanism directly onto the outer ring periphery, the model 131 design facilitates a compact yet powerful rotational joint for marine and offshore platform cranes.

To guarantee reliability, every 131.50.3150 slewing bearing conforms to international standards including ISO 9001, DIN, and RoHS. The manufacturing facility utilizes high-precision induction hardening to achieve a raceway hardness of 55–62 HRC, while the core of the forged rings remains tough to absorb shock loads in shield tunneling machines or ladle turrets. With mounting holes precisely drilled at φ45mm and a tip circle diameter of 3540mm, these specifications reflect a factory capable of maintaining geometric precision at a massive scale.

A thorough comparison of technical documentation and factory audit reports helps identify a truly qualified manufacturing partner for large-scale rotation projects. The triple-row cylindrical roller design combined with induction-hardened raceways maximizes the service life of heavy-duty marine equipment.

Related Products

Port Crane Slewing Bearing

1. Product Description: Port crane slewing bearing. This extra-large slewing bearing is designed specifically to meet the demanding load requirements under extreme operating conditions. Its core features include exceptional size, ultra-high strength, and excellent stability, making it an ideal foundational component for key equipment such as heavy-duty port machinery.
2. Product Structure: Three-row roller slewing bearing
3. Size Range: Product dimensions range from 4238mm x 270mm. Special sizes are available for custom design.
4. Materials: Base material: 42CrMo, 50Mn special alloy steel
Rolling elements: GCr15SiMn high-purity bearing steel
Seal material: Imported nitrile rubber or fluororubber
5. Applications:
Mainly used in various heavy-duty port machinery, such as port cranes, stackers and reclaimers, and container gantry cranes.

View Details

CT Machine Slewing Ring

Large Diameter Crane Slewing Bearing

CT Bearings

Internal Gear Rotary Slewing Bearing

A Verified Manufacturing Powerhouse for 131.50.3150 Slewing Bearings

Luoyang Heng Guan Bearing Technology Co.,Ltd stands as a premier, factory-direct 131.50.3150 slewing bearing manufacturer in China’s industrial bearing hub, specializing in the precision engineering of high-capacity components like the 131.50.3150 three-row cylindrical roller slewing bearing. With over 20 years of deep-rooted expertise, we operate a large-scale manufacturing facility that has successfully supplied heavy-duty rotation solutions to clients in more than 50 countries. Our established presence in Luoyang ensures we leverage a complete industrial supply chain to guarantee both material traceability and structural integrity for every unit produced.

Our technical strength is evidenced by our mastery of the complex 131.50.3150 model, a massive 5000kg component featuring an external gear design and a 3432mm outer diameter. We utilize premium 42CrMo forged rings and GCr15 rollers, applying advanced induction hardening to achieve a surface hardness of 55–62 HRC. This rigorous production process ensures that our bearings can withstand the extreme tilting moments required by port cranes, shield tunneling machines, and offshore platforms.

To ensure absolute compliance for international procurement, our quality management system is strictly certified under ISO 9001, with products meeting DIN, GB, and RoHS standards. We provide transparent documentation and technical verification for every batch, proving our capacity to meet the stringent safety requirements of global heavy industries. Contact our engineering team today to request a factory audit report or a detailed technical specification sheet for your next project.

✅ 20+ Years Manufacturing Expertise

✅ ISO 9001 & DIN Certified

✅ 3400mm+ Large-Scale Production Capacity

✅ Premium 42CrMo Forged Rings

✅ Verified Global Export Experience

Ensuring Engineering Integrity Through Integrated Heavy-Duty Manufacturing Excellence

Selecting a large-diameter bearing like the 131.50.3150 involves high stakes, as downtime in port cranes or ladle turrets causes catastrophic operational delays. Procurement teams often struggle to distinguish between simple distributors and authentic manufacturers capable of managing the metallurgical complexity of 5,000kg components. This specialized production matrix bridges that gap by providing full transparency into the forging, heat treatment, and precision grinding processes that define the structural lifespan of every three-row roller unit.

Advanced Metallurgical Control for 42CrMo Forged Rings
Raw material integrity dictates the performance of a 5,000kg bearing under extreme tilting moments. Every ring undergoes rigorous ultrasonic testing and grain flow analysis to ensure the 42CrMo alloy meets international standards for marine and offshore applications. By managing the forging and quenching processes in-house, the core toughness of the rings is preserved at 220–260 HB, providing the essential shock absorption required for bucket-wheel excavators and platform cranes.
Review Material Certifications
Precision Gear Milling for High-Torque Transmission Efficiency
Achieving smooth 360-degree rotation for a 3.4-meter outer diameter requires micron-level gear accuracy. The 174 external gear teeth undergo induction hardening to reach 55–62 HRC, significantly reducing surface wear during high-frequency slewing operations. Specialized CNC gear hobbing machines ensure that the tip circle diameter of 3540mm maintains perfect pitch and backlash parameters, which minimizes frictional torque and simplifies the drive train for shield tunneling machines.
Explore Gear Specifications
Structural Stability Through Three-Row Roller Load Distribution
Handling simultaneous axial and radial loads requires a sophisticated three-row cylindrical roller configuration. This design utilizes 50mm GCr15 rollers to distribute forces more effectively than standard ball bearings, making it the ideal joint for ladle turrets and heavy lifting equipment. Every 131.50.3150 unit undergoes final dimensional inspection and axial clearance verification to ensure the required precision grade is maintained throughout the entire operational lifecycle.
Download Technical Drawings

15,000+ sqm | Integrated Manufacturing Facility

200+ Units | Monthly Heavy-Duty Capacity

20+ Years | Large-Diameter Engineering Expertise

100% | Ultrasonic Raceway Testing Rate

The three-row cylindrical roller configuration maximizes load-bearing capacity and stability for critical industrial infrastructure.

FAQs

1. What is your typical lead time and MOQ for a custom 131.50.3150 slewing bearing order?

As a direct manufacturer, our standard lead time for the 131.50.3150 slewing bearing is approximately 45 to 60 days, depending on our current forging schedule. We maintain a flexible MOQ of just 1 unit to support both large-scale OEM projects and specialized repair needs for port or marine cranes. Our production facility integrates the entire process from forging and machining to induction hardening and final assembly. This end-to-end control ensures that every 5,000kg unit meets strict dimensional tolerances before shipping. For urgent replacements, please contact our sales team to check our current inventory of 42CrMo or 50Mn forged rings.
2. How can I verify your manufacturing capabilities for heavy-duty three-row roller bearings?

We welcome on-site factory audits and can provide comprehensive manufacturing records, including raw material certificates (MTC) and heat treatment reports. Our workshop is equipped with large-scale CNC vertical lathes capable of processing rings up to 4,000mm in diameter, which easily accommodates the 3,432mm outer diameter of this specific model. Furthermore, we hold certifications such as ISO 9001, DIN, and GB standards, ensuring our quality management systems are globally recognized. If you cannot visit in person, we offer live video inspections of our testing center, where we perform ultrasonic and magnetic particle testing to ensure zero-defect production for critical applications.
3. What quality control measures do you implement to guarantee the lifespan of this heavy-duty bearing?

To ensure the reliability of your equipment, we implement a rigorous multi-stage quality control process. Every three-row cylindrical roller bearing undergoes 100% inspection of raceway hardness, gear accuracy (compliant with ISO Grade 8-10), and mounting hole alignment. We use GCr15 rollers and 42CrMo forged rings to maximize load capacity and fatigue life, ensuring a surface hardness of 55–62 HRC. Each unit comes with a standard 12 to 18-month warranty against manufacturing defects. By monitoring the effective case depth and axial clearance during assembly, we guarantee that our bearings can withstand the extreme tilting moments found in bucket-wheel excavators.
4. Can you provide technical customization for the 131.50.3150 slewing bearing to fit specific marine or mining environments?

Yes, our engineering team can customize the 131.50.3150 slewing bearing to meet specialized environmental requirements. For marine and offshore platform cranes, we offer enhanced sealing systems, such as NBR or Viton, and specialized surface coatings like zinc spraying to prevent corrosion. We can also adjust the gear backlash or modify the number of teeth—currently 174—to match your existing pinion configuration. Our technical department provides full CAD drawings and FEA reports within 3 to 5 business days to verify that the modified design will safely handle your specific axial and radial loads. Please reach out to our technical team for a compatibility review.
5. What are the key factors for evaluating a manufacturer of large-diameter three-row roller slewing bearings?

Evaluating a supplier for large-scale components requires assessing their heat treatment capabilities and material sourcing. A qualified manufacturer must demonstrate expertise in induction hardening, as the raceway hardness is critical for preventing premature wear under heavy loads. Additionally, look for compliance with international standards such as ISO 9001 and RoHS, and verify their experience in high-stakes industries like port machinery or wind energy. The ability to provide full traceability for the 42CrMo or 50Mn steel used is a hallmark of a professional manufacturer. Comparing the supplier’s testing equipment, such as large-scale CMMs, will ensure you receive a product built for long-term stability.