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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

Double Row Ball Slewing Bearing manufacturer

Verified Double Row Ball Slewing Bearing Factory Standards

Your heavy machinery's stability hinges on sourcing components from a manufacturer that prioritizes precision engineering and structural integrity over cost-cutting. Ensuring your supplier possesses the technical depth to manufacture reliable rotary components is critical for your project's long-term safety and operational uptime.

Navigating the global supply chain to find a reliable partner for critical rotary components often presents significant hurdles, especially when equipment safety is at stake. When you are sourcing a Double Row Ball Slewing Bearing manufacturer, the primary concern isn't just the price; it is the manufacturer’s ability to guarantee that the internal raceway geometry can withstand massive tilting moments and axial loads without premature fatigue. For engineering firms and procurement managers, the risk of downtime caused by an unverified supplier’s subpar material selection or inaccurate heat treatment can lead to catastrophic project delays and increased maintenance costs.

Luoyang Heng Guan Bearing Technology Co.,Ltd addresses these industrial anxieties through a specialized manufacturing process optimized for heavy-duty performance. Our Double Row Ball Slewing Bearing manufacturer features a unique configuration of two rows of steel balls, which significantly enhances the anti-overturning performance compared to standard single-row designs. By utilizing high-grade 42CrMo or 50Mn special alloy forged steel for the base rings and GCr15SiMn high-purity bearing steel for the rolling elements, we ensure that every unit delivered to your site handles the demanding stresses of truck cranes or large amusement rides with absolute precision.

Our production facility is anchored by rigorous quality control systems, adhering to ISO 9001, DIN, and GB technical standards to ensure global interchangeability and reliability. We provide a massive scale of manufacturing capability, with outer diameters ranging from 800mm to 6500mm and gear modules up to M40, allowing us to serve diverse sectors from harbor cranes to steelmaking converters. This transparency in our technical specifications and our commitment to using imported nitrile rubber or fluororubber seals highlights our standing as a high-tier factory capable of meeting the most stringent international RoHS requirements.

To evaluate how our engineering capacity aligns with your technical drawings, you can compare our detailed load charts and material certificates against your specific project requirements. The optimized ball arrangement and reinforced sealing provide a robust rotational solution for machinery operating under extreme multi-directional stress.

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

Luoyang Heng Guan: A Verified Double Row Ball Slewing Bearing Manufacturer

Luoyang Heng Guan Bearing Technology Co.,Ltd stands as a premier, verified Double Row Ball Slewing Bearing manufacturer specializing in high-performance double row ball slewing bearings for heavy-duty industrial applications. Based in Luoyang, the heart of China’s bearing industry, we bring over 20 years of specialized manufacturing expertise to every project, ensuring our clients receive components backed by genuine technical strength and industrial heritage. Our expansive facility is engineered to handle massive production requirements, offering a comprehensive size range with inner diameters starting at 500mm and outer diameters reaching an impressive 6500mm.

Precision and durability are what make our production possible. We use premium 42CrMo and 50Mn special alloy steels along with GCr15SiMn high-purity rolling elements to make sure that our double-row structures can handle high axial loads and tilting moments. We offer strong, dependable solutions for truck cranes, excavators, and wind power systems all over the world because we have the technology to make gear modules ranging from M16 to M40. Our dedication to excellence in the workplace is shown by the fact that we strictly follow ISO 9001, DIN, and GB standards. We also follow all RoHS requirements for environmental safety around the world. Luoyang Heng Guan puts a high value on open production and strict quality control. They have successfully provided high-precision bearing solutions to partners in over 50 countries. You can visit our factory to see for yourself what technical skills we have, or you can call our engineering team to talk about your specific load-bearing needs and get a full factory description.

✅ ISO 9001 & DIN Certified

✅ 20+ Years Manufacturing Expertise

✅ 6500mm Max Diameter Capacity

✅ Global Supply to 30+ Countries

✅ 42CrMo High-Grade Alloy Steel

Secure Heavy-Duty Engineering with Certified Manufacturing Precision

Procurement leaders often face the challenge of verifying whether a supplier can genuinely handle the structural complexities and scale of massive 6500mm slewing bearings. Reliability in heavy-duty applications like tower cranes or converters requires more than just a product; it demands a transparent manufacturing ecosystem. Our facility of Double Row Ball Slewing Bearing manufacturer integrates premium material sourcing, precision induction hardening, and rigorous QC to ensure every double-row ball component exceeds global safety standards.

Premium Alloy Steel Foundation for Extreme Durability
High-grade 42CrMo and 50Mn special alloy steels form the structural core of every bearing. Each forging undergoes specialized heat treatment and induction hardening to 55-62 HRC, ensuring raceways withstand massive axial loads and tilting moments. This metallurgical precision allows the bearing to maintain a tough core capable of absorbing intense shock loads in harsh mining and construction environments.
Review Material Standards
Advanced Machining for Diameters Up to 6500mm
Specialized CNC equipment manages the intricate double-row ball structure across a vast size range from 800mm to 6500mm. By optimizing the arrangement of GCr15SiMn high-purity bearing steel balls, the production line achieves precise gear module configurations between M16 and M40. This technical accuracy eliminates structural deformation, providing smooth rotation for heavy superstructures like portal cranes and large excavators.
Explore Size Specifications
Integrated Testing Protocols for Zero-Defect Reliability
Every unit undergoes stringent quality checks, including ultrasonic testing for material flaws and dimensional verification of internal or external gear configurations. Utilizing imported nitrile rubber or fluororubber seals, the final product is validated for long-term resistance against particulate ingress and lubricant leakage. These rigorous QC cycles guarantee that every unit meets the safety factors required for amusement rides and steelmaking converters.
Download Quality Reports
Agile Customization for Complex Large-Scale Infrastructure
Standardized production flows alongside flexible engineering units allow for rapid prototyping and mass delivery of customized configurations. Whether a project requires reduced-diameter ball types or specific reinforced seal arrangements, the manufacturing facility adapts to unique mounting requirements without compromising lead times. This scale of operations supports global shipyards and construction firms in maintaining critical equipment uptime under demanding schedules.
View Production Workflow

6500mm | Maximum Outer Diameter Capacity

55-62 HRC | Precision Surface Induction Hardening

20+ Years | Industrial Manufacturing Expertise

100% | Ultrasonic Flaw Detection Rate

The specialized double-row ball structure provides superior anti-overturning performance for heavy-duty rotation.

FAQs

1. What is your standard production lead time and minimum order quantity (MOQ) for large-diameter bearings?

Our standard production lead time is typically 45 to 60 days, depending on the complexity of the internal or external gear configurations and current material availability. We support B2B procurement flexibility by offering a minimum order quantity (MOQ) of just 1 unit, allowing for prototype testing or specialized machinery replacements. For custom dimensions between 500mm and 6500mm, lead times may extend by 10-15 days to accommodate specific forging and heat treatment requirements. We recommend contacting our sales engineers with your technical drawings to receive a confirmed production schedule within 24 hours.
2. Can you provide details regarding your factory location and annual production capacity for heavy-duty components?

Our primary manufacturing facility is located in the industrial hub of China, spanning over 25,000 square meters and equipped with high-precision CNC vertical lathes and gear hobbing machines. We maintain an annual production capacity of over 3,500 units for specialized heavy-duty components, including large-scale gear modules ranging from M16 to M40. This scale ensures we can meet the high-volume demands of global crane and excavator OEMs while maintaining strict adherence to ISO 9001 and DIN standards. You are welcome to request a virtual tour or a detailed factory profile to better understand our technical infrastructure and manufacturing scale.
3. How do you guarantee the quality and load-bearing performance of each Double Row Ball Slewing Bearing before shipment?

We guarantee quality by conducting rigorous testing on every Double Row Ball Slewing Bearing, including ultrasonic flaw detection, raceway hardness testing (ensuring 55-62 HRC), and dimensional precision checks. Our quality control team utilizes 42CrMo or 50Mn special alloy steels as base materials to ensure the highest anti-overturning performance and load-bearing capacity. Each shipment is accompanied by a comprehensive inspection report and material certificate (GB/T or ISO standards). For critical applications like harbor cranes or steelmaking converters, we provide additional stress-test data to ensure operational safety under extreme eccentric loads. Please view our "Quality Control" page for a full list of testing protocols.
4. How can I verify your manufacturing certifications or conduct a third-party factory audit?

You can verify our manufacturing authenticity through our ISO 9001, DIN, and RoHS certification records, which are available for download on our website. We fully support third-party factory audits from reputable agencies such as SGS, TÜV, or BV to validate our production lines, material sourcing, and quality management systems. Furthermore, we provide full traceability for all rolling elements made from GCr15SiMn high-purity bearing steel. If you require a site visit or a third-party inspection, please coordinate with our logistics department at least 7 business days in advance to ensure all safety and documentation protocols are prepared for your arrival.
5. What are the key factors to consider when evaluating the technical strength of a professional bearing manufacturer?

Evaluating a manufacturer requires assessing their material sourcing integrity, heat treatment precision, and range of customization. A reliable manufacturer should offer a broad size range, such as inner diameters from 500mm to 5500mm, and demonstrate expertise in processing specialized alloys like 42CrMo. Technical strength is further proven by the ability to provide various gear configurations and seal types (like fluororubber for harsh environments) to meet specific application needs in sectors like wind power or mining. Finally, verify that the supplier adheres to international standards like ISO and DIN to ensure the Double Row Ball Slewing Bearing provides a service life exceeding 10 years under standard operating conditions.