Excavator Turntable Bearing: The Core of Heavy-Duty Rotation
1. Product Overview
As a professional manufacturer specializing in slewing solutions, we understand that the excavator turntable bearing (also known as a slewing ring or swing bearing) is the critical "joint" of your machinery. It is the component that bridges the upper structure and the undercarriage, bearing immense loads while ensuring smooth 360-degree rotation.
Our excavator turntable bearings are engineered to withstand the harshest environments—from freezing construction sites to scorching mining operations. By integrating high-strength materials with precision heat treatment, our bearings deliver the stability and durability required for modern hydraulic excavators, ensuring maximum uptime and operational safety.
2. Product Performance & Quality
We don't just manufacture bearings; we engineer reliability. Our excavator turntable bearings are designed with a focus on high load capacity, corrosion resistance, and long service life.
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Superior Load Capacity: Designed to simultaneously withstand large axial forces, radial forces, and tilting moments. This ensures stability even when the excavator arm is fully extended with a heavy load.
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Precision & Smooth Rotation: Utilizing high-precision grinding processes, our bearings offer low starting torque and smooth rotation, allowing for precise positioning of the excavator bucket.
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Robust Sealing System: We employ multi-stage sealing solutions (often using high-quality rubber or polyurethane) to prevent grease leakage and block contaminants like mud, dust, and water, which are common in excavation projects.
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Material Integrity: We use high-grade alloy steels (such as 42CrMo or 50Mn) that undergo rigorous quenching and tempering. This results in a hard raceway surface that resists wear and deformation.
3. Technical Specifications
We offer a wide range of standard and custom specifications to fit various excavator models (from mini excavators to large mining shovels).
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Feature
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Specification Details
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Product Name
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Excavator Turntable Bearing / Slewing Ring
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Material
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42CrMo, 50Mn, C45 Steel, or Custom Alloy
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Rolling Elements
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Steel Balls or Crossed Cylindrical Rollers
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Gear Type
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Internal Gear, External Gear, or Gearless
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Sealing Type
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Rubber Seals / Labyrinth Seals (IP67 Rated options)
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Hardness
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Raceway Hardness: 55-62 HRC; Depth: 2-4mm
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Lubrication
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Grease lubrication with standard grease nipples
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Mounting
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Bolt holes drilled and tapped according to OEM drawings
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4. Certifications & Standards
Quality is not negotiable. Our manufacturing processes adhere to strict international standards to ensure compatibility and safety.
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ISO 9001:2015: Certified Quality Management System.
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SKF / DIN / JIS Standards: Our production tolerances align with global bearing standards.
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CE Certification: Compliant with European safety and health requirements.
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SGS / BV Inspection: Third-party inspections are welcome and routinely conducted for our export markets.
5. Product Applications
While our primary focus is the construction industry, our turntable bearings are versatile.
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Hydraulic Excavators: From 1.5-ton mini excavators to 50-ton+ heavy-duty models.
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Crawler Cranes: Providing stability for heavy lifting.
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Mining Shovels: Handling extreme impact loads in open-pit mining.
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Rotary Drilling Rigs: Ensuring precise angular positioning.
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Material Handlers: Supporting continuous grab and swing cycles in scrap yards.
6. Our Services
We provide a "One-Stop" solution for our global partners.
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OEM & ODM: We can manufacture bearings according to your specific drawings or reverse-engineer samples with high precision.
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Fast Delivery: With a robust supply chain, we ensure on-time delivery to keep your production lines moving.
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Technical Support: Our engineering team is available to assist with installation guidance and failure analysis.
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Warranty: We provide a standard 12-month warranty on all our slewing bearings.
7. Frequently Asked Questions (FAQ)
Q1: How do I identify the correct turntable bearing for my excavator?
A: You can identify the bearing by checking the part number stamped on the ring, measuring the bolt hole pattern (PCD), and counting the gear teeth. If you provide us with the excavator model (e.g., CAT 320, Komatsu PC200), we can match the correct part.
Q2: What is the difference between a ball type and a roller type turntable bearing?
A: Ball type bearings (four-point contact) are generally used for light to medium loads and offer high-speed rotation. Roller type bearings (crossed roller or three-row roller) are designed for heavier loads and higher rigidity, typically found in larger excavators.
Q3: Do you provide gears with the bearing?
A: Yes. We can machine internal or external gears directly onto the bearing ring according to your module and pressure angle requirements.
Q4: What is your lead time?
A: For standard models, we often have stock available for immediate shipment. For custom orders, the lead time is typically 30-45 days depending on the quantity.
Q5: Can I get a sample for testing?
A: Yes, we welcome sample orders for quality testing. Please contact our sales team for a quote.
