/ Double row ball slewing bearings

Double Row Slewing Bearing

1.Product Introduction: Slewing bearings with double-row rolling elements (steel balls or rollers), having strong load-bearing capacity, capable of simultaneously bearing axial, radial loads and overturning moments, suitable for medium and heavy-load equipment.
2.Structure Type: It has an annular shape. The inner and outer rings have double raceways, with two rows of rolling elements (steel balls or rollers) inside, separated by spacer rings to prevent collisions, with seals on both sides, and the mounting holes are suitable for high-strength bolts.
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 cranes, crawler cranes, large amusement equipment.
6.Key Inspection Items: Clearance of double-row rolling elements, anti-overturning moment, integrity of seals.
Product Description
Data Sheet

Double Row Slewing Bearings for Heavy-Duty Machinery – Custom-Built for High Load, Impact & Temperature Resistance | Fast Global Delivery

When your equipment faces extreme loads, temperatures, or relentless operational demands, Double Row Slewing Bearings deliver unmatched stability and endurance. Engineered with dual rows of rolling elements, these bearings distribute stress evenly, handling axial, radial, and overturning moments simultaneously. At LUOYANG INNO BEARING CO., LTD, we combine 30+ years of precision manufacturing expertise with agile customization to solve challenges in industries like steel mills, port cranes, and mining excavators. Whether you need a standard or oversized bearing (up to φ5000mm), our solutions are built to thrive where others fail.

What Makes Our Double Row Slewing Bearings Stand Out?

  • Unmatched Load Capacity: Dual-row design supports heavy axial/radial loads (up to 5000kN) and overturning moments, ideal for rotating platforms in cranes or metallurgical gear.
  • Built for Extremes: Operate reliably in temperatures up to 150℃ or corrosive environments with advanced materials like 42CrMo alloy steel and fluororubber seals.
  • Precision Engineering: Achieve P4-grade accuracy (≤0.01mm runout) for smooth rotation in medical imaging devices or high-speed machinery.
  • Rapid Customization: Tailor dimensions (outer diameter: 500–3500mm), load ratings, and sealing systems in 30 days – 70% faster than industry averages.

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Where Do Double Row Slewing Bearings Excel?

1. Steel Mills & Metallurgy

From ladle turrets to rolling mills, our bearings withstand molten metal splashes, heavy shock loads, and 150℃ heat. Ceramic-coated raceways and high-purity steel extend lifespan by 40% in slag-handling equipment.

2. Port Cranes & Ship Loaders

Dual-row construction absorbs high-impact loads during container handling. Epoxy-coated surfaces and IP56 seals protect against saltwater corrosion, reducing maintenance cycles.

3. Mining Excavators & Stackers

Reinforced roller variants handle uneven loads in quarry machinery. Integrated spacer rings prevent element collision, even under 24/7 operation.

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Why Partner With LUOYANG INNO?

✅ 30+ Years of Heavy-Duty Expertise

We've honed our craft in manufacturing bearings for the world’s most demanding applications, from tunnel boring machines to wind turbines.

✅ No-Surprise Customization

Need a non-standard size (e.g., φ4200mm) or 5000kN dynamic load rating? Our R&D team designs, prototypes, and tests your bearing in 3 weeks.

✅ Rigorous Quality Assurance

Every Double Row Slewing Bearing undergoes 12+ checks, including vibration analysis (<4.5dB) and 100,000-cycle endurance testing. Result? A 99.9% qualification rate.

✅ Agile Global Delivery

Choose from 1,000+ standard bearings (48-hour dispatch) or benefit from modular production for custom orders.

Technical Support That Doesn't Quit

From installation alignment checks to IoT-enabled wear monitoring, we're here for the long haul:

  • Predictive Maintenance: Real-time vibration data alerts you to potential issues before downtime occurs.
  • Lifecycle Optimization: Get tailored lubrication schedules and replacement timelines.
  • 24/7 Global Assistance: Email, WhatsApp, or phone – our engineers respond in <2 hours.

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FAQ

1. How do your bearings handle 150℃ environments in steel mills?

We use ceramic-coated raceways and 42CrMo alloy steel heat-treated for thermal stability, ensuring consistent performance without warping.

2. Can you customize bearings for legacy port cranes with unique mounting holes?

Yes! Share your blueprint or CAD file, and we'll replicate exact hole patterns, diameters, and seal types in 15–20 days.

3. What material upgrades improve impact resistance in mining applications?

Opt for GCr15SiMn rollers and hardened spacer rings to reduce element collision under uneven loads.

4. How do you achieve faster lead times for custom sizes?

Modular production pre-machines common components, cutting φ3000mm bearing delivery to 20 days.

Contact Us

Need a Double Row Slewing Bearing That Outperforms?

📧 Email specs to sales@inno-bearing.com for a custom quote within 24 hours.

🔧 Include: Outer diameter, load capacity, operating environment, and certifications required.

LUOYANG INNO – Where Heavy-Duty Meets Precision.

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