/ Single row roller slewing bearings

Slewing Ring Bearing With External Gear

1.Product Introduction: Slewing bearings with external gears on the outer ring, which can be directly connected to the drive motor, have high transmission efficiency, and are suitable for equipment that needs active slewing and has an open space.
2.Structure Type: It has an annular structure. The outer side of the outer ring is machined with external teeth (straight or helical teeth, module 2 - 12). The inner and outer rings have double raceways, with built-in steel balls or rollers, and the cages prevent collisions, with 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,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 accuracy.
Product Description
Data Sheet

Slewing Ring Bearing With External Gear: Precision Rotation for Heavy-Duty Applications

Engineered for Industrial Durability & High Torque Performance

When your equipment demands reliable rotation under extreme loads, the Slewing Ring Bearing With External Gear delivers unmatched precision. Designed for industries like wind energy, port machinery, and metallurgy, these bearings combine robust external gears with smooth rotational performance. With customizable diameters up to 5,000mm and materials hardened to withstand temperatures up to 500°C, they ensure longevity in harsh environments. LUOYANG INNO BEARING CO., LTD leverages 30+ years of expertise to provide solutions that minimize backlash, reduce downtime, and optimize load distribution.

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Why Choose Our External Gear Slewing Ring Bearings?

1. High-Precision Gear Design

Our Slewing Ring Bearing With External Gear features CNC-machined spur or helical gears (module 6–30) with carburized surfaces (HRC 58–62). This ensures:

  • <35dB operational noise for medical/solar applications.
  • Backlash as low as 0.05° for precise positioning in wind turbine yaw systems.
  • 10,000 kN dynamic load capacity to handle shock loads in mining crushers.

2. Built for Extreme Conditions

  • Corrosion-resistant gears: Laser-clad WC-Co coatings extend service life in saltwater environments.
  • High-temperature resilience: 42CrMo alloy gears withstand 500°C in steel ladle turrets.
  • IP67 sealing: Protects against dust and moisture in offshore wind farms.

3. Industry-Specific Solutions

  • Wind Energy: GL Wind-certified bearings with IoT-ready wear sensors.
  • Port Cranes: Galvanized gears for salt-spray resistance (ISO 12944 C5-M).
  • Solar Trackers: P5-class precision for ±0.05° daily rotation accuracy.

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Technical Specifications

Parameter Details
Gear Types Spur/helical external gears
Material 50Mn/42CrMo alloy steel, forged & normalized
Diameter Range 500–5,000mm (customizable)
Certifications ISO 9001, CE Marking
Lubrication Automatic greasing systems (optional)

Applications Where Our Bearings Excel?

Wind Turbine Nacelles

Our external gear slewing rings integrate strain gauges to monitor gear tooth stress in real time, reducing unplanned downtime by 30%.

Ore Stacker-Reclaimers

Anti-abrasion coatings on gears withstand 24/7 mining operations, backed by a 24-month warranty against manufacturing defects.

Solar Tracker Systems

Precision-ground gears ensure smooth daily rotation (±0.05°) for maximum energy capture.

Trusted by Global Industries

30+ Years of Expertise

  • In-house R&D optimizes gear tooth profiles for reduced wear.
  • Modular production cuts lead times by 30% for non-standard sizes.

Quality You Can Rely On

  • 3-stage inspections: Material UT tests → Gear hardness checks → 50,000-cycle endurance trials.
  • 99.9% defect-free rate across 1,000+ stocked SKUs.

Fast Global Delivery

  • 48-hour shipping for standard bearings.
  • 8-week lead time for φ4000mm+ custom orders.

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FAQ

Q: Can you customize external gear diameters beyond 5,000mm?

A: Yes – submit your specs, and our engineers will design a solution within 72 hours.

Q: How do your bearings handle saltwater corrosion?

A: We apply laser-clad coatings and triple-lip seals for offshore durability.

Q: Is there a minimum order quantity?

A: No MOQ for prototypes. Bulk orders receive volume discounts.

Q: Do you provide gear regrinding services?

A: Yes – send your worn bearing for remanufacturing to like-new condition.

Contact Us

Need a Custom Slewing Ring Bearing With External Gear?

Email your requirements to sales@inno-bearing.com for a solution tailored to your torque, RPM, and environmental needs.

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