Premium Mobile Crane Swing Bearings – Precision Engineering for Heavy-Duty Lifting
Product Overview
As a professional manufacturer specializing in rotational transmission solutions, we understand that the mobile crane swing bearing is the critical "joint" that determines the stability and safety of your lifting operations. Our slewing bearings are engineered to support the upper structure of mobile cranes, facilitating smooth 360-degree rotation while simultaneously withstanding complex combined loads.
Whether for all-terrain cranes, rough-terrain cranes, or truck-mounted cranes, our bearings are designed to handle high dynamic loads and shock impacts. We move beyond standard manufacturing by optimizing the gear meshing with the pinion, ensuring longer service life and reduced maintenance costs in the field.
Performance & Quality Highlights
Our mobile crane swing bearings are manufactured using high-strength alloy steel and advanced heat treatment processes to ensure durability in harsh environments.
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Superior Load Capacity: Designed to simultaneously support heavy axial forces, radial forces, and tilting moments. Our Three-Row Roller and Double-Row Ball series offer maximum load capacity for large-tonnage cranes.
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Precision Gear Hardening: The gear teeth (internal or external) undergo induction hardening or flame hardening, achieving a hardness of HRC 55-62 on the tooth surface. This ensures resistance against wear and pitting during frequent slewing operations.
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Advanced Sealing Technology: Equipped with multi-layer rubber seals (top and bottom), our bearings effectively prevent the ingress of dust, mud, and water, while retaining grease. This is vital for cranes operating in construction and mining environments.
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Low Friction Torque: Precision machining of raceways and rolling elements ensures smooth rotation with minimal starting torque, allowing for precise load positioning.
Technical Specifications
We offer a comprehensive range of standard and non-standard slewing bearings. Below are the common series used in mobile crane applications:
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Series Type
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Structure Description
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Key Characteristics
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Typical Application
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Single-Row Ball (01 Series)
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Four-point contact ball design
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Compact structure, lightweight, cost-effective.
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Small to medium mobile cranes
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Double-Row Ball (02 Series)
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Dual row, different ball diameters
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High axial and tilting moment capacity, robust.
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Medium to large truck cranes
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Three-Row Roller (03 Series)
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Cylindrical rollers & steel balls
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Maximum load capacity, high rigidity, separates loads.
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Heavy-duty all-terrain cranes
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Crossed Roller (11 Series)
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Crossed cylindrical rollers
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High precision, high rigidity, compact axial height.
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Precision lifting equipment
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Material & Hardness:
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Material: 42CrMo, 50Mn, or equivalent high-strength alloy steel.
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Raceway Hardness: Depth hardened to HRC 55-62 for extended fatigue life.
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Gear Treatment: Precision hobbing followed by tooth induction hardening.
Certifications & Standards
Quality is not just a promise; it is a certification. Our manufacturing processes and products comply with international standards to ensure safety and reliability.
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ISO 9001:2008: Quality Management System Certification.
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ISO 14001: Environmental Management System.
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OHSAS 18001: Occupational Health and Safety.
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CCS Certificate: China Classification Society inspection for marine and heavy industrial applications.
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JB/T 2300-2011: Compliance with the national machinery industry standard for slewing bearings.
Product Service & Customization
We provide more than just hardware; we offer complete rotational solutions.
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Modular Design: We can supply the Slewing Drive assembly, including the hydraulic motor, planetary gearbox, and brake, fully integrated with the bearing.
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Customization: Non-standard dimensions, special bolt hole patterns, or specific gear modules can be manufactured according to your OEM drawings.
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Global Logistics: We have extensive experience exporting to Europe, America, and Southeast Asia, ensuring safe packaging and timely delivery.
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After-Sales Support: Technical guidance for installation and lifetime supply of replacement parts.
Applications
Our mobile crane swing bearings are widely used in various heavy machinery sectors:
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Construction: All-terrain cranes, truck cranes, and crawler cranes.
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Port & Marine: Ship-to-shore cranes and floating cranes.
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Industrial: Heavy-duty lifting platforms and rescue vehicles.
Frequently Asked Questions (FAQ)
Q1: What is the typical lead time for a mobile crane swing bearing?
A: For standard models (e.g., 01, 02, 03 series), we often have stock or can manufacture within 20-30 days. Custom non-standard bearings usually require 45-60 days depending on the complexity.
Q2: Can you match the gear teeth to our existing pinion?
A: Yes. To ensure optimal meshing and reduce noise, we require your pinion specifications (module, pressure angle, number of teeth) to customize the bearing gear profile accordingly.
Q3: How do you ensure the bearing survives shipping?
A: We apply a heavy-duty anti-corrosion coating and use reinforced wooden crates with internal fixation to prevent movement during transit.
Q4: Do you provide installation manuals?
A: Yes, every shipment includes a detailed technical manual covering installation torque, lubrication intervals, and maintenance schedules.
Contact Us Today
Looking for a reliable partner for your mobile crane components? Contact us for a quote or technical consultation.
