Three-Row Roller Slewing Bearing

1.Product Introduction: The same as "Triple-row Roller Slewing Bearings". It has a triple-row roller bearing structure, is suitable for super heavy loads, and has excellent anti-overturning moment performance.
2.Structure Type: It has an integrally forged annular shape, with three rows of raceways + three rows of rollers, steel cages, heavy-duty seals, and the mounting holes are suitable for large bolts.
3.Size Range: Outer ring diameter: 1500 - 6000mm, inner ring diameter: 1350 - 5800mm, height: 100 - 250mm.
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: Large port cranes, mining excavators, heavy-duty crawler cranes, offshore wind power.
6.Key Inspection Items: Consistency of roller clearance, anti-overturning moment, flaw detection of forgings.

Product Description

Three-Row Roller Slewing Bearings | Heavy-Load, High-Temperature Resistance for Metallurgical & Port Equipment

Max Load Capacity: 45,000 kN | Temperature Tolerance: -30°C to +150°C | Precision Grade: P6

When your heavy machinery faces axial, radial, and tipping moment loads simultaneously, Three-Row Roller Slewing Bearings deliver unmatched stability. Designed for metallurgical rolling mills, port cranes, and blast furnace equipment, these bearings combine three rows of rollers with high-purity 42CrMo steel for 150°C operational tolerance. Unlike conventional designs, our modular assembly reduces installation complexity while maintaining P4-grade precision.

Key Features

  • Triple-Row Roller Design: Distributes heavy loads (up to 45,000 kN static) across multiple contact points.
  • High-Temperature Resilience: Vacuum-degassed steel retains structural integrity at 150°C.
  • Corrosion-Resistant Seals: Fluororubber options protect against saltwater, dust, and humidity.

Technical Specifications

Parameter Specification
Outer Diameter Range 1500 mm – 6000 mm (customizable)
Material Hardness 50Mn/42CrMo (55-60 HRC)
Dynamic Load Capacity 15,000 kN (minimum)
Lifespan 100,000+ hours under continuous load
Certifications ISO 9001, CE, FEM 9.511 compliant

Built for Demanding Industries

Port Cranes & Shipyard Equipment
Our Three-Row Roller Slewing Bearings withstand salt spray corrosion (1,000+ hours) and cyclic loading in container handling.

Metallurgical Rolling Mills
Engineered for 200°C environments with optional water-cooled raceways, these bearings reduce downtime in steel production lines.

Offshore Wind Turbines
Precision-ground rollers ensure smooth rotation under variable wind loads, with IoT-enabled wear monitoring for predictive maintenance.

Quality Assurance

Every Three-Row Roller Slewing Bearing undergoes ultrasonic material impurity testing (≤0.002%), laser-guided radial runout checks (≤0.05mm), and 100,000-cycle lifespan validation.

FAQs

Q: Can these bearings handle 500°C temperatures in steel plants?
A: Yes. Our water-cooled raceway option maintains P4 precision even in 500°C environments.

Q: Do you provide corrosion-resistant coatings for port cranes?
A: Absolutely. Fluororubber seals and zinc-nickel coatings offer 1,200-hour salt spray resistance.

Q: How fast can you deliver a φ4000mm custom bearing?
A: 18-22 days post-design approval, including heat treatment and precision grinding.

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