Precision Engineered Turntable Bearings for Wheel Excavators: The Core of Reliable Rotation
In the demanding world of heavy construction machinery, the wheel excavator stands out for its mobility and versatility. However, the efficiency of this machine relies heavily on one critical component: the turntable bearing (also known as a slewing bearing). As a professional manufacturer specializing in high-performance slewing solutions, we understand that the "joint" of your machine must withstand extreme loads while ensuring precise rotation.
Our wheel excavator turntable bearings are designed to replace standard OEM parts with superior durability, optimized sealing, and enhanced load capacity, ensuring your machinery operates at peak performance for longer periods.
🏗️ Product Performance & Quality: Built for Heavy-Duty Cycles
Wheel excavators operate in dynamic environments where stability and rotation speed are paramount. Our turntable bearings are engineered to handle the complex combination of forces inherent in excavator operations.
Superior Load Capacity
Our bearings are designed to simultaneously support heavy axial loads, radial loads, and tilting moments. Whether the excavator is lifting heavy loads or digging into tough terrain, our bearing ensures structural integrity.
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High Static Load: Designed to handle the weight of the upper structure and maximum payload without deformation.
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Dynamic Durability: Optimized for continuous rotation cycles common in truck-mounted excavators.
Advanced Sealing Technology
One of the primary causes of bearing failure is contamination. Our wheel excavator slewing bearings feature multi-lip rubber seals (often H-shaped or V-shaped) that provide:
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100% Protection against dust, mud, and water ingress.
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Grease Retention: Keeps lubrication inside the raceway, extending maintenance intervals.
Precision Gearing
We manufacture these bearings with high-precision external teeth (or internal teeth, depending on the model) that mesh perfectly with the excavator's pinion gear.
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Induction Hardening: The gear teeth are induction hardened to prevent wear and stripping.
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Smooth Engagement: Reduces noise and vibration during rotation, ensuring smooth operation.
⚙️ Technical Specifications & Materials
We utilize high-grade materials and precise heat treatment processes to ensure our bearings meet international standards.
Material Composition
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Component
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Material Standard
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Characteristics
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Rings (Inner/Outer)
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42CrMo / 50Mn / S45C
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High tensile strength, excellent hardenability.
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Rolling Elements
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GCr15SiMn / 100CrMn6
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High hardness, wear resistance, and contact fatigue strength.
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Cage / Spacer
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Nylon / Steel / Brass
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Low friction, high impact resistance.
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Seals
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NBR / FKM (Viton)
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Oil and weather resistant.
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Structural Types
We primarily supply the Single-Row Four-Point Contact Ball Bearing (01 Series) and Double-Row Ball Bearing (02 Series) for wheel excavators, as these offer the best balance of compact structure and load capacity for this application.
📜 Certifications & Standards
Quality is not just a promise; it is a documented process. Our manufacturing facility adheres to strict quality control measures.
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ISO 9001:2015 Certified: Ensuring consistent quality management in every production batch.
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JB/T 2300-2011: Our bearings comply with the Chinese Machinery Industry Standard for Slewing Bearings.
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DIN / ISO Standards: We can manufacture according to DIN 69 120 or other international specifications upon request.
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Material Certificates: Every batch of steel comes with a Mill Test Certificate (MTC) to trace chemical composition and mechanical properties.
🛠️ Product Applications: Beyond the Wheel Excavator
While optimized for wheel excavators (such as those found in road construction and urban infrastructure projects), our turntable bearings are versatile "machine joints" suitable for a wide range of machinery:
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Truck Cranes & All-Terrain Cranes: Handling heavy lifting moments.
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Concrete Pump Trucks: Supporting the boom system.
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Aerial Work Platforms: Ensuring stable elevation and rotation.
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Rotary Drilling Rigs: Withstanding high torque and vibration.
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Small Excavators & Mini Diggers: Providing compact rotation solutions.
🤝 Our Services: From Manufacturing to After-Sales
As a direct manufacturer, we offer more than just a product; we offer a partnership.
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OEM & ODM Capabilities: We can produce bearings to match specific OEM part numbers (e.g., replacements for Liebherr, Caterpillar, Komatsu, XCMG, SANY).
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Custom Gear Machining: If you require specific tooth profiles or non-standard bolt hole patterns, our engineering team can customize the design.
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Technical Support: We provide installation guides and torque specifications to ensure the bearing is mounted correctly.
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Fast Lead Time: Our streamlined production process ensures rapid delivery for urgent replacement needs.
❓ Frequently Asked Questions (FAQ)
Q1: How do I identify the correct turntable bearing for my wheel excavator?
To ensure a perfect match, please check the nameplate on your old bearing or measure the following:
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Bolt Hole Pattern: Center-to-center distance of the mounting holes.
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Gear Type: External or Internal teeth, and the module of the gear.
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Dimensions: Outer diameter, inner diameter, and total height.
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Machine Model: Providing the excavator model (e.g., "Volvo EW160") helps us cross-reference the correct part.
Q2: What is the difference between a "Slewing Bearing" and a "Turntable Bearing"?
In the industry, these terms are used interchangeably. A "turntable bearing" is often the common name used by operators, while "slewing bearing" is the technical engineering term. Both refer to the same component used in wheel excavators.
Q3: Do you provide grease for the bearings?
Yes, our bearings are pre-lubricated with high-quality lithium-based grease suitable for standard operating temperatures. We also install grease nipples (zerk fittings) for future maintenance.
Q4: Can I order a sample for testing?
Yes, we welcome sample orders for quality verification. We understand that testing is crucial before bulk purchasing. Please contact our sales team for sample pricing and availability.
Q5: What is your warranty policy?
We offer a standard 12-month warranty against manufacturing defects. If a failure occurs due to material or workmanship issues within this period, we will replace the unit free of charge.
