Three Row Roller Slewing Bearings

1.Product Introduction: With a triple-row roller bearing structure (two rows of radial rollers + one row of axial rollers), it has extremely strong load-bearing capacity, is suitable for heavy-duty equipment, and has excellent anti-overturning moment performance.
2.Structure Type: It is integrally forged with a thick-wall annular shape. The inner and outer rings have three rows of raceways corresponding to radial and axial rollers respectively, with steel cages, heavy-duty metal seals, and the mounting holes are suitable for super-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, 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 equipment.
6.Key Inspection Items: Consistency of the clearance among the three rows of rollers, anti-overturning moment (≥1000kN·m), flaw detection of forgings.

Product Description

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

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 Advantages

  • Extreme Load Capacity: Triple-row configuration supports axial loads up to 5,000 kN and overturning moments exceeding 25,000 kN·m.
  • High-Temperature Resilience: Optional ceramic-coated rollers and graphite lubrication for metallurgical kilns (up to 150°C).
  • Rapid Customization: Non-standard bearing designs delivered in 15–20 days.
  • Global Compliance: ISO 9001, CE, API 8C, and region-specific certifications (AS/NZS, GOST R).

Technical Specifications

Parameter Specification
Outer Diameter Range 1,500 mm – 6,000 mm
Axial Load Capacity 1,500–5,000 kN
Radial Load Capacity 1,000–3,200 kN
Material 42CrMo/50Mn steel, GCr15 rollers
Precision Grade P4 (ISO 492)

Performance & Quality

  • Optimized Load Distribution: Triple-row configuration reduces stress concentration by 40% compared to single-row designs.
  • Precision Manufacturing: Forged 50Mn steel hardened via carburizing for 10x improved wear resistance.
  • Quality Assurance: 3-stage validation, including ultrasonic impurity testing (≤0.002%), CMM dimensional verification, and 200% rated load capacity trials.

Trusted Industries

Our bearings are engineered for port container handlers, metallurgical kiln support, offshore wind turbine pitch control, and tower cranes requiring IP67-sealed protection.

FAQs

Q: Can these bearings handle 500°C temperatures in steel plants?
A: Yes. Our ceramic-coated roller option maintains P4 precision even in high-heat environments.

Q: Can you make non-standard sizes like φ5,000mm?
A: Yes—custom diameters up to 6,000mm are achievable with ±0.05mm precision.

Q: Do you support legacy equipment retrofits?
A: Yes—we provide laser alignment and CAD-based remanufacturing services for your slewing bearing replacement.

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