Excavator Slewing Ring: The Core of Heavy-Duty Rotation
As a professional manufacturer specializing in slewing bearings, we understand that the Excavator Slewing Ring is not just a component; it is the "joint" of the machine. Our slewing rings are engineered to provide the critical link between the excavator's upper structure and the undercarriage, ensuring smooth, precise, and powerful rotation under extreme loads.
Whether you are operating a mini excavator or a massive mining shovel, our rotary bearings are designed to withstand the rigors of heavy construction, mining, and earthmoving environments. We combine advanced metallurgy with precision manufacturing to deliver products that minimize downtime and maximize operational efficiency.
Product Performance & Quality Assurance
In the competitive landscape of heavy machinery, reliability is paramount. Our excavator slewing rings are built to handle complex load scenarios, including axial forces, radial forces, and tilting moments simultaneously.
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Superior Load Capacity: Utilizing optimized raceway geometry and high-grade rolling elements (balls or rollers), our bearings distribute loads evenly to prevent premature wear.
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Robust Sealing Solutions: We employ multi-stage sealing systems (often rubber or polyurethane) to keep contaminants like dust, mud, and water out, while retaining grease inside. This is crucial for longevity in harsh excavator environments.
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Precision Gear Teeth: The internal or external gear teeth are induction hardened and precision-ground to ensure perfect meshing with the drive pinion, reducing backlash and noise during rotation.
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Material Integrity: We use vacuum-degassed bearing steel (such as 50Mn or 42CrMo) to ensure high toughness and fatigue resistance.
Quality Control: Every unit undergoes rigorous testing, including ultrasonic flaw detection, hardness testing, and rotational torque checks before leaving our facility.
Technical Specifications
We manufacture a wide range of slewing rings compatible with major excavator brands (such as Caterpillar, Komatsu, Hitachi, Volvo, etc.). Below are the general specifications for our standard excavator series.
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Parameter
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Specification Details
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Product Name
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Excavator Slewing Ring / Swing Circle Bearing
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Material
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50Mn, 42CrMo, or Custom Alloy Steel
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Gear Type
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Internal Gear, External Gear, or Gearless
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Rolling Element
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Single Row Ball, Double Row Ball, or Crossed Roller
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Hardness (Raceway)
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55-62 HRC (Induction Hardened)
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Hardness (Gear Teeth)
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50-55 HRC
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Sealing
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NBR / FKM Rubber Seals (Dust & Water Proof)
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Lubrication
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Grease Fittings (Zerk fittings) included
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Mounting
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Bolt holes drilled and tapped as per OEM standards
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Note: We offer both standard catalog items and custom engineering solutions based on your specific drawing or sample requirements.
Certification & Standards
Our manufacturing processes adhere to international quality management systems to ensure consistency and safety.
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ISO 9001:2015: Certified Quality Management System.
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JB/T 2300-2011: Compliance with Chinese Machinery Industry Standards for Slewing Bearings.
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CE Certification: Meeting European safety and health requirements.
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SGS / TUV Inspection: Third-party inspection reports available upon request.
Our Services: Beyond the Product
We pride ourselves on being a solution provider, not just a parts seller.
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OEM & ODM Support: We can replicate discontinued parts or design new slewing rings for custom machinery.
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Fast Logistics: With a robust supply chain, we ensure timely delivery to minimize your machine's downtime.
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Technical Consultation: Our engineering team is available to help you select the right bearing series (e.g., 01 Series, 11 Series, 13 Series) based on your load calculations.
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After-Sales Warranty: We stand behind our quality with comprehensive warranty coverage against manufacturing defects.
Applications
While our primary focus is the Excavator Slewing Ring, our rotary bearings are versatile and widely used in various heavy-duty applications:
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Construction Machinery: Crawler excavators, wheeled excavators, and mini-diggers.
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Lifting Equipment: Mobile cranes, tower cranes, and truck-mounted cranes.
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Industrial Automation: Rotary tables, welding positioners, and robotic manipulators.
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Renewable Energy: Pitch and yaw drives for wind turbines.
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Marine & Port: Ship cranes and port handling equipment.
Frequently Asked Questions (FAQ)
Q1: How do I identify the correct Excavator Slewing Ring for my machine?
A: To identify the correct part, please check the nameplate on the old bearing (if legible), measure the bolt hole pattern (PCD), count the number of teeth, and provide the excavator model number (e.g., PC200-8, E320D).
Q2: What is the difference between a ball type and a roller type slewing ring?
A: Generally, ball type bearings (like the 01 series) are suitable for lighter loads and higher speeds. Roller type bearings (like the 11 or 13 series) offer higher rigidity and load capacity, making them ideal for large mining excavators.
Q3: Do you provide installation guides?
A: Yes. We provide detailed installation manuals, including torque specifications for bolts and greasing intervals. We recommend checking the backlash between the pinion and the ring gear during installation.
Q4: Can you supply slewing drives (slewing reducers)?
A: Yes, in addition to the slewing ring (the bearing), we can supply the complete slewing drive assembly, which includes the hydraulic motor, planetary gearbox, and housing.
Q5: What is your lead time?
A: For standard models, we often have stock and can ship within 3-7 days. For custom or large-diameter orders, the lead time is typically 30-60 days depending on quantity.
