Slewing Bearing With External Gear

1.Product Introduction: The same as "External Gear Slewing Bearings". With external gears on the outer ring, it can be directly connected to the motor, has high transmission efficiency, and is suitable for open driving scenarios.
2.Structure Type: It has an annular shape. The outer side of the outer ring has straight or helical teeth. The inner and outer rings have double raceways, with steel balls or rollers + 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, port portal cranes, wind power yaw systems.
6.Key Inspection Items: External gear pitch error, depth of carburized layer, slewing accuracy.

Product Description

Slewing Bearings with External Gears: Precision Engineered for Heavy-Duty Industrial Applications

Engineered for Extreme Loads & Temperatures – 30+ Years of Precision Manufacturing Expertise

Slewing Bearings with external gears are engineered to deliver unmatched power transmission efficiency in demanding environments. At LUOYANG INNO BEARING CO., LTD, we specialize in crafting these bearings with high-purity steel and precision-ground gears to ensure smooth rotation, even under loads up to 5,000kN. Whether you’re designing a wind turbine yaw system or a port crane, our Solutions combine AGMA Class 8+ gear accuracy with 500°C heat resistance for long-term reliability.

Key Product Highlights

  • Wide Size Range: φ500–5,000mm diameters | Up to 100mm height.
  • Superior Durability: 42CrMo steel gears with HRC 50–55 hardness.
  • Customization Ready: Spur/helical gears, P4-level precision, IP67 sealing.
  • Fast Turnaround: 30% faster production for non-standard sizes.

Technical Specifications

Parameter Standard Range Custom Options
Outer Diameter φ500–3,000mm Up to φ5,000mm+
Gear Accuracy DIN 6–8 DIN 4 (High-Precision)
Operating Temp -30°C to 200°C -50°C to 200°C
Load Capacity 2,500kN 10,000kN+

Industries We Serve

1. Wind Energy
Our external gear slewing bearings withstand 20+ years of harsh offshore conditions, featuring DNV-GL certification and fatigue life validated at 2x industry cycles.

2. Port Machinery
Designed for 0.01mm gear backlash control in container cranes, utilizing impact-resistant 50Mn steel outer rings.

3. Mining & Metallurgy
Built to handle 4,000kN loads and 200°C furnace heat with carburized gear teeth (depth ≥2mm) and corrosion-resistant seals.

Customization & Quality

We provide 3D simulation (gear meshing analysis/FEM stress testing) and prototype testing with CMM validation. Our quality assurance includes 100% vibration testing (≤4.5dB) and ultrasonic inspection to ensure a 99.9% qualification rate.

FAQs

Q: Can you customize helical gears for compact machinery?
A: Yes! We design helical gears with <0.05mm pitch error for space-constrained applications like medical robotics.

Q: How do you ensure gear durability in high-heat environments?
A: Our 42CrMo gears undergo precision heat treatment and carburizing to maintain hardness up to 500°C.

Q: What’s the lead time for a φ4,000mm custom bearing?
A: Just 60 days – 50% faster than industry norms.

Contact Us

Need a Reliable Slewing Bearing with External Gears?

ISO-certified, 30+ years of expertise, and no MOQ for custom projects.

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