Giant Wheel Turntable: High-Load Slewing Solutions for Heavy Industry
As a premier manufacturer specializing in rotational motion technology, we understand that the "Giant wheel turntable"—technically known as a large-diameter slewing bearing or turntable bearing—is the critical "joint" of your heavy machinery. Our engineering team designs these massive components to withstand extreme environments, ensuring stability and precision in the most demanding applications.
Product Overview
A Giant Wheel Turntable is not merely a bearing; it is a complex transmission component capable of simultaneously supporting axial force, radial force, and tilting moment. Unlike standard bearings, our giant turntables are often customized with external or internal gearing to facilitate precise rotation for massive structures.
From wind energy to port logistics, our turntable bearings provide the structural integrity needed for heavy-load operations. We utilize advanced heat treatment and precision grinding to ensure that every inch of the raceway contributes to the longevity of your equipment.
Performance and Quality
Our manufacturing philosophy centers on "Zero Defect" production. We employ high-grade alloy steel (such as 42CrMo4 or 50Mn) to ensure the rolling elements and raceways possess superior hardness and toughness.
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High Load Capacity: Engineered to handle multi-directional forces, our triple-row roller designs offer the highest load capacity in the industry.
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Precision Gearing: Whether you require external or internal teeth, our gear hobbing and induction hardening processes ensure smooth meshing and long-term wear resistance.
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Sealing Integrity: To combat dust, water, and grit in harsh environments, we utilize multi-stage labyrinth seals and high-performance rubber lip seals.
Technical Specifications
While we specialize in custom manufacturing, the following table outlines the typical parameters for our standard Giant Wheel Turntable series.
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Parameter
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Specification Range
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Bearing Type
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Four-point contact ball / Crossed Roller / Three-row Roller
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Pitch Diameter
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500mm - 5000mm+
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Material
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42CrMo4, 50Mn, C45
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Hardness (Raceway)
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55-62 HRC
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Gear Type
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External Teeth, Internal Teeth, or Toothless
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Sealing
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NBR / FKM with Steel Guards
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Lubrication
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Grease with fitting nipples
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Accuracy Class
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P6 / P5 / P4 (DIN 628)
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Certifications and Standards
Quality is not just a promise; it is a documented standard. Our production facilities and final products adhere to rigorous international norms to ensure safety and interoperability.
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ISO 9001:2015: Certified Quality Management System.
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JB/T 2300-2011: The standard for slewing bearings widely used in construction machinery.
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DIN 628 / ISO 492: Adherence to international tolerance standards for rolling bearings.
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CE Certification: Compliance with European safety and health requirements.
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Material Certificates: EN 10204 3.1 Material Test Reports available for all steel batches.
Product Applications
Our Giant Wheel Turntables are the backbone of rotational movement in various heavy industries.
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Wind Energy: Pitch and yaw control systems for wind turbines.
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Port & Marine: Ship-to-shore cranes, container cranes, and deck cranes.
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Construction: Tower cranes and concrete pump trucks.
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Mining & Excavation: Large-scale excavators and bucket-wheel reclaimers.
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Medical & Defense: Radar antenna mounts and CT scanner rotation frames.
Our Services
We go beyond manufacturing to offer a complete lifecycle solution.
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Custom Design: Our engineers can modify the bolt hole patterns, gear modules, and sealing designs to fit your specific housing constraints.
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OEM/ODM Support: We provide white-label manufacturing and custom packaging for distributors.
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Technical Consultation: Assistance with bearing selection, load calculation, and mounting advice.
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After-Sales Support: Comprehensive warranty and rapid replacement services for critical spare parts.
Frequently Asked Questions (FAQ)
Q1: What is the difference between a single-row and triple-row roller turntable?
A single-row design is generally more compact and suitable for moderate loads. A triple-row roller design separates the load paths (axial and radial), allowing the bearing to support significantly higher overturning moments and heavy loads, making it ideal for "Giant" applications.
Q2: Can you manufacture bearings with non-standard dimensions?
Yes. As a factory, we specialize in non-standard, custom-sized turntable bearings. We can produce units with specific bolt patterns, flange designs, or special coatings (e.g., zinc plating for corrosion resistance).
Q3: What is the lead time for a large diameter turntable bearing?
Standard models (under 2000mm) typically ship within 15-20 days. Large, custom-engineered giant wheel turntables may require 30-45 days depending on the complexity of the forging and heat treatment processes.
Q4: Do you provide installation guidance?
Absolutely. We provide detailed technical manuals regarding mounting torque, gear backlash adjustment, and lubrication schedules to ensure optimal performance.
