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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

133.50.3150 slewing bearing manufacturer

Direct Factory Verification for 133.50.3150 Slewing Bearing Procurement

Your heavy-duty machinery requires a 133.50.3150 slewing bearing manufacturer that meets strict safety standards without the risks of middleman markups or unverified quality. Ensure your project’s stability by sourcing directly from a facility capable of handling 5000kg internal gear components.

Finding a reliable source for a five-ton component like the 133.50.3150 slewing bearing involves more than just comparing quotes; it requires vetting the technical depth of the production floor. Procuring such critical parts for offshore cranes or TBM main bearings often leaves engineers worried about metallurgical integrity and dimensional accuracy. Without direct access to the manufacturer, verifying whether the 42CrMo forged rings or the internal gear parameters—such as the module 20 teeth—meet international safety codes becomes an operational risk that can lead to costly downtime or structural failure.

Luoyang Heng Guan Bearing Technology Co.,Ltd addresses these concerns by providing full transparency for the Model No.: 133.50.3150. This three-row cylindrical roller slewing bearing is engineered for maximum static load capacity, handling up to 35900kN axially. As part of the specialized 133 series, its internal gearing with 139 teeth and a +0.5 profile shift coefficient ensures high-torque transmission for port gantry cranes and ladle turrets. Unlike generic suppliers, our engineering team manages the progression from the 130 gearless series to the 133 internal gear configuration, ensuring the 72 mounting holes align perfectly with your specific mounting flange requirements.

The manufacturing facility operates under ISO 9001, DIN, and RoHS standards, ensuring every 133.50.3150 slewing bearing undergoes induction hardening of the raceways to HRC 55-62. With an outer diameter of 3432mm and precision grades reaching P5, the capability to manage forged ring production and GCr15 roller assembly is backed by rigorous testing protocols. Comprehensive documentation for gear backlash specifications and material heat treatment is provided to facilitate seamless integration into heavy-duty equipment.

Before finalizing the procurement list, compare the technical specifications and factory certifications to validate the structural performance of these heavy-duty rotation systems. The internal gear three-row roller design provides the necessary structural rigidity for extreme load-bearing applications in maritime and mining environments.

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

Verified Leading Manufacturer of Heavy-Duty 133.50.3150 Slewing Bearings

Luoyang Heng Guan Bearing Technology Co., Ltd. stands as a premier, field-verified manufacturer specializing in high-capacity components such as the 133.50.3150 slewing bearing manufacturer. Headquartered in Luoyang, the heart of China’s bearing industry, our facility is engineered to produce large-scale internal gear rings with an outer diameter of 3,432mm and net weights exceeding 5,000kg. As a direct factory, we bridge the gap between complex engineering requirements and physical manufacturing reality, ensuring every 133 series unit meets rigorous ISO 9001, DIN, and GB standards.

Our technical prowess is rooted in high-grade metallurgy, utilizing forged 42CrMo and 50Mn rings to achieve a raceway hardness of HRC 55-62, essential for offshore cranes and TBM main bearings. We currently operate with a robust production infrastructure that serves clients across more than 50 countries, delivering precision-ground rollers and internal gear mechanisms (Module 20) with P5/P6 accuracy grades. By maintaining strict control over the entire supply chain—from raw forging to induction hardening—we provide the structural integrity required to handle static axial loads of up to 35,900kN.

Whether you are a procurement manager or a technical lead, our transparency in documentation and facility audits ensures you are partnering with a legitimate industry leader. We invite you to review our comprehensive certification portfolio or schedule a virtual factory tour to verify our manufacturing scale and quality control systems firsthand.

✅ ISO 9001 & DIN Certified

✅ 3,400mm+ Large-Scale Machining Capability

✅ HRC 55-62 Precision Hardening

✅ Global Export to 50+ Countries

Verified Industrial Capacity for Precision 133.50.3150 Slewing Bearings

Procurement teams often struggle to find 133.50.3150 slewing bearing manufacturers capable of handling the 5,000kg scale of 133.50.3150 bearings without compromising on metallurgical integrity or gear precision. Validating a supplier’s vertical integration is essential for ensuring long-term operational safety in offshore and port environments. This challenge is addressed through a controlled production ecosystem that combines advanced forging technology with rigorous induction hardening to deliver heavy-duty components engineered for extreme industrial duty cycles.

Advanced Metallurgy for Extreme Load Capacity
Utilizing high-grade 42CrMo or 50Mn forged rings ensures every 133.50.3150 bearing maintains structural density for heavy-duty applications. The three-row cylindrical roller design is supported by induction-hardened raceways reaching HRC 55-62, providing an axial static load capacity of 35,900kN. This metallurgical precision prevents premature wear and deformation under the intense tilting moments found in offshore platform cranes and ladle turrets.
Technical Material Specifications
High-Precision Internal Gear CNC Machining
The internal gear configuration of the 133.50.3150 model requires exacting tooth geometry to ensure smooth power transmission under load. Large-scale CNC gear hobbing machines process the 139 teeth with a module of 20, maintaining P5 precision standards across the 3432mm outer diameter. Controlling the profile shift coefficient and 180mm tooth width minimizes vibration while extending the service life of TBM and bucket wheel excavator drive systems.
Verified Gear Parameters
Multi-Stage Quality Verification for Safety
Authenticating manufacturer strength requires transparent quality control throughout the 5,000kg assembly process. Every unit undergoes comprehensive non-destructive testing, including ultrasonic and magnetic particle inspection, to detect subsurface flaws in the forged rings. Detailed traceability for mounting hole alignment and raceway clearance ensures that each bearing adheres to international standards before deployment to critical port gantry or marine crane projects.
Production Quality Documentation

50,000 m² | Specialized Large-Scale Production Facility

150+ | Heavy-Duty Roller Bearings Delivered Annually

20+ | Years of Certified Industrial Manufacturing Expertise

100% | Ultrasonic Flaw Detection on Critical Components

The three-row cylindrical roller design provides maximum stability for heavy-duty rotation in demanding maritime and construction environments.

FAQs

1. What is the typical production lead time for a 133.50.3150 slewing bearing at your facility?

Our standard production lead time for a 133.50.3150 slewing bearing is typically 45 to 60 days, depending on our current forging schedule. Because this model is a massive three-row cylindrical roller bearing weighing approximately 5,000kg, the process requires significant time for precision forging of the 42CrMo rings and controlled induction hardening of the raceways. We manage the entire manufacturing flow in-house—from initial metallurgical testing to the final grinding of the internal gear (Module 20). This timeline ensures the unit meets P5 or P6 precision grades required for heavy-duty applications like port gantry cranes. Please contact our sales team for a real-time production slot update.
2. Do you offer customization for the internal gear parameters and mounting configurations on these large-scale bearings?

Yes, as a specialized manufacturer, we provide full customization for the internal gear and mounting hole specifications for all 133-series models. While the standard 133.50.3150 slewing bearing features 72 mounting holes for M42 bolts and an internal gear with 139 teeth, we can adjust the module (m), profile shift coefficient (x), or tooth width (b=180mm) to match your specific drive pinion requirements. We also offer material upgrades, such as utilizing 42CrMo for enhanced fatigue resistance in offshore platform cranes. If your project requires a non-standard bolt pattern or a specific gear backlash, our engineering department can provide a technical drawing for approval within 48 hours.
3. How do you guarantee the raceway hardness and load capacity of the 133.50.3150 slewing bearing?

We guarantee a raceway surface hardness of HRC 55-62 through a rigorous multi-stage induction hardening process, ensuring the 133.50.3150 slewing bearing can handle a static axial load of 35,900kN. Every bearing undergoes non-destructive testing (NDT), including ultrasonic and magnetic particle inspections, to detect any sub-surface flaws in the 50Mn or 42CrMo forged rings. The three-row roller design, utilizing 50mm diameter GCr15 rollers, is verified through load-deflection calculations to ensure stability in high-moment applications like ladle turrets. Each shipment is accompanied by a comprehensive quality certificate detailing the effective case depth and hardness profile. You may request a sample inspection report from our quality control department at any time.
4. Can I conduct a factory audit or request third-party inspections for my order?

We welcome professional factory audits and regularly cooperate with third-party inspection agencies such as SGS, BV, and DNV to verify our manufacturing capabilities. Our facility operates strictly under ISO 9001:2015 quality management systems and complies with DIN and GB industry standards. During an audit, you can witness our internal gear cutting process, the precise assembly of the 130-134 series bearings, and our final inspection protocols for radial and axial runout. For international clients who cannot visit in person, we provide a complete digital traceability file, including material mill certificates and RoHS compliance documents. To schedule an on-site visit or a video audit, please reach out to our export coordinator.
5. What are the primary technical factors for evaluating a manufacturer’s strength in large-diameter bearing production?

Evaluating a manufacturer requires focusing on metallurgical control, gear precision capabilities, and certification depth. A top-tier manufacturer must demonstrate the ability to process large-diameter rings (exceeding 3000mm) while maintaining P5 precision tolerances and consistent raceway hardening depths. Essential certifications, such as ISO 9001, DIN, and specialized marine class approvals, indicate a commitment to global quality benchmarks. Furthermore, the supplier should possess advanced gear-cutting machinery capable of handling high modules and specific profile shifts for heavy-duty transmission. Reviewing a manufacturer’s history in supplying bearings for TBMs or bucket wheel excavators is often the best way to verify their technical resilience and engineering expertise.