External Gear Slewing Bearing

1.Product Introduction: Slewing bearings with an integrated gear ring on the outer ring. The gears are located on the outer side of the outer ring, which is convenient for meshing with the motor gears, and is suitable for open driving scenarios.
2.Structure Type: It has an annular structure. The outer side of the outer ring is machined with straight or helical teeth (module 2 - 12). The inner and outer rings have double raceways, with built-in steel balls or rollers, nylon or steel cages, and seals on both sides.
3.Size Range: Outer ring diameter: 500 - 3500mm, outer ring gear ring diameter: 520 - 3550mm, height: 30 - 100mm.
4.Material: Inner ring / outer ring: 50Mn, 42CrMo; rolling elements: GCr15 bearing steel, GCr15SiMn (optional for impact resistance); seals: nitrile rubber, fluororubber (optional for oil and high temperature resistance).
5.Application Fields: Tower cranes, large amusement equipment (observation wheels), port portal cranes, wind power yaw systems.
6.Key Inspection Items: External gear pitch error, depth of carburized layer, slewing resistance.

Product Description

High-Performance External Gear Slewing Bearings for Heavy-Duty Applications

External Gear Slewing Bearings are engineered to handle slow-turning, high-load rotational movements in demanding industrial environments. At LUOYANG INNO BEARING CO., LTD, we specialize in manufacturing custom Solutions for industries like port machinery, renewable energy, and medical equipment. Our bearings feature an external gear ring that meshes seamlessly with motor gears, ensuring reliable power transmission in open driving scenarios. With over 30 years of expertise, we deliver precision-engineered bearings that withstand extreme temperatures, heavy cyclic loads, and corrosive environments.

Why Choose Our External Gear Slewing Bearings?

1. Precision Engineering for Diverse Industries
Our products are designed for applications requiring exceptional accuracy and durability:

  • Port & Shipbuilding: DNV-GL-certified bearings resist saltwater corrosion (1,000+ hours ASTM B117 testing) and handle dynamic loads up to 15,000 kN.
  • Medical Equipment: P4-grade precision with <25dB noise for surgical robots and MRI systems.
  • Wind Turbines: GL2010-certified designs endure -40°C to +80°C with 200+ million cycle fatigue life.

2. Customization in Record Time
Need a φ3000mm bearing with helical gears? We deliver:

  • 15–20 Days Lead Time for large custom orders (30% faster than industry average).
  • Flexible Gear Profiles: Choose from spur/helical gears (module 2–30) matching AGMA/DIN/ISO standards.

3. Built to Last Under Extreme Conditions

  • Material Excellence: 42CrMo/50Mn steel components hardened to HRC 58–62.
  • Heat Resistance: Operate continuously at 500°C with specialized coatings.
  • IP67 Sealing: Blocks dust, water, and debris in harsh environments.

Technical Specifications

Parameter Specification
Outer Diameter 500–3500mm (Custom up to 5000mm)
Gear Type External Spur/Helical (Module 2–12)
Load Capacity Radial: Up to 10,000 kN; Axial: 8,000 kN
Precision Grade P4/P5 (ISO 492)
Temperature Range -30°C to +150°C
Material 50Mn, 42CrMo, GCr15 Bearing Steel

Where Our Bearings Excel?

Port Cranes & Offshore Platforms
Our PortSpeed Series reduces crane downtime by 40% with:

  • Rapid Replacement: Pre-machined mounting holes for 48-hour installation.
  • IoT Integration: Real-time load monitoring via built-in sensors.

Wind Turbine Yaw Systems
The WindMax Series ensures 25+ years of reliable operation:

  • Hurricane Resilience: Withstands 80m/s wind speeds.
  • Low-Temp Grease: Maintains lubrication at -40°C.

Medical Imaging Systems
MediGlide Series bearings enable silent, precise rotation:

  • Non-Magnetic Options: ZrO2 ceramic for MRI compatibility.
  • Cleanroom Manufacturing: ISO Class 5 standards.

Quality Assurance You Can Trust

Every external gear slewing bearing undergoes:

  1. Material Testing: Spectrometer checks for alloy purity.
  2. Heat Treatment Validation: Case depth ≥4mm for wear resistance.
  3. 12+ Performance Tests: Including 10,000-hour lifespan simulation.

Result: 99.9% defect-free rate since 2020.

How We Customize Your Solution?

  1. Consultation: Share your load, speed, and environmental needs.
  2. 3D Modeling: Receive FEM-optimized designs in 72 hours.
  3. Production: Track progress via weekly video updates.
  4. Delivery: Fast global shipping with customs support.

FAQ

Q: Can you modify existing gear tooth profiles?
A: Yes! We replicate AGMA, DIN, or ISO profiles for retrofits.

Q: How do your bearings handle molten slag exposure?
A: Special epoxy coatings protect against splashes up to 500°C.

Q: What's the lead time for a φ4000mm custom bearing?
A: 18 days for standard configurations; expedited options available.

Q: Do you provide installation support?
A: Free video guidance or on-site engineers for complex installations.

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