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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

Komatsu Excavator slewing bearing manufacturer

Direct Factory Precision: Komatsu Excavator slewing bearing Manufacturing Excellence

Your heavy machinery fleet requires the structural integrity of a direct-source component that eliminates middleman markups and technical ambiguity. When your project uptime depends on verified metallurgical quality, sourcing from a manufacturer with integrated forging and precision-grinding capabilities is the only way to safeguard your operational budget.

Searching for a Komatsu Excavator slewing bearing often leads to a maze of trading companies where technical transparency is scarce. For procurement managers and fleet owners, the challenge isn't just finding a part; it's verifying if the supplier possesses the actual forging, heat treatment, and induction-hardening assets required to meet Komatsu’s rigorous swing torque standards. A mismatched or low-grade swing circle leads to catastrophic gear tooth breakage and costly downtime in high-torque digging environments.

Luoyang Heng Guan Bearing Technology Co.,Ltd solves this by operating as a specialized production hub for the entire Komatsu series, from the 6-ton PC30 to the massive 90-ton PC2000. Our Komatsu Excavator slewing bearing units utilize integrally forged 50Mn or 42CrMo alloy structural steel, ensuring a dense metallurgical structure that resists the extreme overturning moments of mining-class excavators. By employing specialized triple-row roller structures for mining-class models (PC600–PC2000), we provide superior resistance to high-frequency impacts compared to generic alternatives.

Our factory strength is validated by rigorous adherence to ISO 9001, DIN, and RoHS standards, with every raceway undergoing medium-frequency induction hardening to a consistently maintained HRC 52–58 range. This ensures that every Komatsu Excavator slewing bearing we ship offers a "plug-and-play" installation experience with mounting specifications that align perfectly with industry-standard specifications. Our precision-grinding process ensures smooth rotation and low noise, effectively eliminating the "swing play" common in non-verified components.

Compare our technical data sheets and forging certifications against your current procurement standards to verify the difference in material density and hardening depth. Technical verification of the structural integrity and load-bearing capacity of these internal gearing systems ensures long-term reliability for high-stakes mining and construction projects.

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.

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CT Machine Slewing Ring

Large Diameter Crane Slewing Bearing

CT Bearings

Internal Gear Rotary Slewing Bearing

Premier Certified Manufacturer of Precision Komatsu Slewing Bearings

Luoyang Heng Guan Bearing Technology Co.,Ltd stands as a premier verified manufacturer dedicated to high-performance Komatsu excavator slewing bearings. Headquartered in Luoyang, the historic center of China’s bearing innovation, we have established a robust global footprint, supplying heavy-duty swing circles to professional clients across more than 50 countries. Our facility specializes in a complete range for Komatsu models, providing structural solutions for everything from 6-ton compact units to massive 90-ton mining machines, including the PC30 through PC2000 series.

Our technical strength is shown by the high-quality 50Mn and 42CrMo alloy structure steel we use and our improved mechanical control. Each ring goes through complete casting and medium-frequency induction hardening to get the exact raceway hardness of HRC 52–58. This gives the rings great resistance to wear and long fatigue life. We follow international standards like ISO 9001, DIN, and GB when we create our products, whether it's a single-row four-point contact ball structure for the PC200 or a triple-row roller design for high mining-class loads. Because we care so much about quality, our bearings can handle axial, radial, and overturning moments without any problems.

Beyond manufacturing excellence, we offer comprehensive technical support to minimize machine downtime and optimize swing motor performance. As a verified industrial supplier, we provide the transparency and production capacity required for large-scale procurement and critical replacements. Contact us today to request a factory-direct technical specification sheet and verify our production capabilities for your specific Komatsu fleet.

✅ Verified ISO 9001 Factory

✅ PC30-PC2000 Full Series Coverage

✅ HRC 52-58 Raceway Hardness

✅ 50+ Countries Served

✅ 42CrMo High-Strength Forgings

Streamlining Excavator Maintenance with Factory-Direct Precision Slewing Bearing Engineering

Procurement professionals often face the risk of component failure and costly downtime when sourcing from unverified suppliers who lack control over metallurgical standards. Luoyang Hengguan Bearing eliminates these uncertainties by integrating specialized manufacturing expertise with a rigorous "plug-and-play" compatibility framework. Every component undergoes strict quality protocols to bridge the gap between OEM performance and aftermarket value, providing a reliable foundation for Komatsu fleets operating in the most demanding environments.

Full-Spectrum Compatibility Across Every Komatsu Tonnage Range
Covering models from 6-ton mini-excavators to 90-ton mining giants, these bearings ensure a seamless installation experience without site modifications. Compact single-row ball structures facilitate agile rotation for PC60 through PC200 units, while heavy-duty models like the PC2000 utilize triple-row roller designs for extreme load resistance. This comprehensive engineering approach guarantees that every replacement part matches the original mounting specifications, allowing for immediate operational restoration across diverse fleet requirements.
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Superior Material Selection Using Integrated Alloy Forging Processes
High-strength 50Mn and 42CrMo alloy structural steels form the critical foundation of these robust slewing rings. By utilizing integral forging instead of standard casting, the metallurgical structure achieves maximum density and toughness, preventing catastrophic structural failure under intense radial and axial loads. This rigorous selection of raw materials results in a component that resists cracking even during high-frequency slewing or heavy-duty crushing applications common in quarrying and demolition sectors.
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Advanced Induction Hardening for Extended Raceway Service Life
Precision grinding follows medium-frequency induction hardening to maintain raceway hardness within a consistent HRC 52–58 range. This specialized treatment creates a wear-resistant surface that effectively prevents spalling and fatigue under extreme overturning moments. By controlling the hardening depth to exacting standards, these bearings withstand high-torque digging cycles without deformation, significantly reducing the frequency of major maintenance overhauls and improving long-term equipment reliability.
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20+ Years | Industrial Manufacturing Excellence

PC30 - PC2000 | Comprehensive Komatsu Series Coverage

HRC 52-58 | Precision Hardened Raceway Integrity

100% | Ultrasonic Flaw Detection Passing Rate

Advanced metallurgical forging and induction hardening processes ensure maximum equipment uptime for heavy-duty mining operations.

FAQs

1. What is the typical lead time and production capacity for your Komatsu excavator swing bearings?

Our typical lead time for standard Komatsu models, such as the PC200 or PC300, is 15 to 25 days, supported by an annual production capacity of over 10,000 sets. For large-scale mining orders like the PC1250 or PC2000, production usually requires 35 to 45 days to accommodate specialized heat treatment and precision grinding. We maintain a consistent stock of high-quality 50Mn and 42CrMo alloy steel to ensure that manufacturing begins immediately upon order confirmation. This robust supply chain allows us to meet urgent replacement needs for global distributors and fleet operators without compromising structural integrity. Contact our sales team to receive a real-time inventory list for your specific model.
2. Can you provide samples for quality testing, and what is your minimum order quantity (MOQ)?

We offer a minimum order quantity (MOQ) of just 1 unit, allowing you to verify the fit, finish, and performance of our Komatsu Excavator slewing bearing before committing to a larger contract. As a specialized manufacturer, we understand that field repairs often require single-unit precision. Every sample is delivered with a comprehensive technical data sheet and material certificates complying with ISO 9001 and GB standards. This "plug-and-play" compatibility ensures that the mounting dimensions and gear profiles match industry specifications perfectly. For bulk procurement or long-term supply agreements, we provide tiered pricing structures to maximize your cost-efficiency while maintaining premium quality.
3. How do you guarantee the hardness and fatigue resistance of the bearing raceways?

We guarantee superior durability by utilizing medium-frequency induction hardening followed by precision grinding to achieve a consistent raceway hardness of HRC 52–58. This process ensures a hardened layer depth of 3–5mm, which is critical for resisting spalling and fatigue under the high-frequency slewing cycles of heavy-duty excavation. Each batch undergoes rigorous testing, including Ultrasonic Flaw Detection (UT) to identify internal micro-cracks and CMM inspections to verify gear pitch accuracy. By controlling the entire metallurgical process in-house—from integral forging of 42CrMo alloy steel to final assembly—we ensure our bearings can withstand the extreme overturning moments typical of 25 to 90-ton machines.
4. How can I verify your factory’s authenticity and technical qualifications?

You can verify our manufacturer status through an on-site audit, a live video factory tour, or by requesting our ISO 9001, DIN, and RoHS certification records. We welcome third-party inspections from agencies like SGS or BV to validate our production lines, which include advanced CNC machining centers and specialized induction hardening equipment. Unlike trading companies, we provide full material traceability reports and heat treatment logs for every production serial number. Our facility in Luoyang is specifically engineered to handle the complex requirements of Komatsu-compatible bearings, ensuring that every component, from the internal gears to the NBR sealing system, meets professional B2B standards.
5. What are the key factors to consider when evaluating a manufacturer for a Komatsu Excavator slewing bearing?

Evaluating a Komatsu Excavator slewing bearing supplier requires focusing on material integrity, heat treatment precision, and structural compatibility across the full model range. A high-quality manufacturer should utilize forged 50Mn or 42CrMo steel rather than cast materials to ensure the metallurgical density required for mining-class loads. Key indicators of expertise include the ability to offer diverse internal structures—such as single-row crossed-roller or triple-row roller designs—specifically optimized for different excavator tonnages. Furthermore, verified compliance with international standards like DIN and ISO, combined with a proven track record in heavy-duty applications (from 6 to 90 tons), ensures the supplier can deliver the reliability needed to minimize machine downtime.