Double Row Ball Slewing Bearing

1.Product Introduction: With a double-row ball bearing structure, the load-bearing capacity is 1.5 - 2 times that of single-row ball bearings, suitable for medium and heavy-load slewing equipment, and has strong anti-overturning moment performance.
2.Structure Type: It has an annular integrated structure. The inner and outer rings are equipped with double arc raceways, with two rows of steel balls (separated by spacer rings) inside, equipped with nitrile rubber or fluororubber seals on both sides, and evenly distributed mounting holes are reserved.
3.Size Range: Outer ring diameter: 500 - 3500mm, inner ring diameter: 450 - 3350mm, height: 30 - 120mm.
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: Medium-sized excavators, port portal cranes, crawler cranes, large amusement equipment.
6.Key Inspection Items: Consistency of the clearance between the two rows of balls, anti-overturning moment performance, integrity of seals.

Product Description

Double Row Ball Slewing Bearings Built for Extreme Loads & Temperatures – 30+ Years of Heavy-Duty Expertise

Double row ball Slewing Bearings are engineered to handle the toughest industrial challenges. With 30+ years of expertise, LUOYANG INNO BEARING CO., LTD delivers robust solutions for heavy-load, high-temperature, and precision-critical applications. Whether you're operating port cranes, metallurgical furnaces, or mining equipment, our bearings combine advanced materials and precision engineering to maximize uptime and performance.

Why Choose Us?

  • 2x Load Capacity: Designed with dual raceways and steel balls, our bearings support 1.5–2x heavier axial, radial, and moment loads than single-row designs.
  • Extreme Durability: Heat-treated 42CrMo steel and GCr15 bearing balls ensure shock resistance and 50,000+ hours of service in harsh conditions.
  • Precision Performance: P4/P5 accuracy grades for smooth rotation (runout ≤0.05mm), ideal for medical imaging or crane slewing systems.
  • Customizable: Modify seals (fluoropolymer for 150°C), raceways, or mounting interfaces to fit your machinery.

Technical Specifications

Parameter Specification
Outer Diameter (OD) 500 – 3500mm (Custom up to 5000mm)
Load Capacity Up to 15,000kN dynamic load
Temperature Range -30°C to +150°C
Material 42CrMo / 50Mn steel, GCr15 bearing balls
Seals Nitrile rubber, fluoropolymer options

Key Features & Benefits

  • Built for Heavy Industrial Demands: Reinforced raceways and spacer rings distribute loads evenly, reducing wear under 15,000kN dynamic loads.
  • High-Temperature Resistance: Specialized heat treatment and fluororubber seals enable stable operation up to 150°C.
  • Rapid Customization: Modular production delivers custom heavy-duty slewing bearings in 15–20 days.
  • Low Maintenance: Pre-lubricated, triple-lip sealed designs in double row ball slewing bearing units reduce servicing needs.

Applications Across Industries

  • Port Cranes: Corrosion-resistant bearings with 50% higher impact tolerance for slewing systems.
  • Mining Equipment: Custom oversized bearings (φ3000mm+) for rotary excavators.
  • Medical Imaging: Ultra-precision P4-grade bearings for smooth, silent rotation.
  • Wind Turbines: High-torque designs for yaw and pitch control systems.

Why Partner With Us?

  • 30+ Years of Expertise: Specialized in heavy-load bearing solutions.
  • 12-Stage Quality Control: 99.9% defect-free rate validated by vibration, lifespan, and load testing.
  • Global Logistics: 48-hour dispatch for 1,000+ stocked bearings.
  • End-to-End Support: From design to predictive maintenance planning.

FAQs

Q: How long does a custom product take to produce?
A: Non-standard designs (up to φ5000mm) ship in 15–20 days.

Q: Can your bearings handle both axial and radial loads?
A: Yes! The double-row angular contact ball design manages combined loads efficiently.

Q: Do you provide installation support?
A: Our engineers offer on-site guidance for optimal mounting and alignment of your slewing bearing.

Contact Us

Ready to Upgrade Your Equipment?

📩 Contact Our Engineers Today

Online Message

Learn about our latest products and discounts through SMS or email