Large Diameter Slewing Bearing

1.Product Introduction: Large slewing bearings with an outer ring diameter of ≥2000mm, suitable for heavy-duty equipment, capable of bearing high-strength loads and overturning moments, impact-resistant and with a long service life. 2.Structure Type: It has a thick-wall annular shape (wall thickness ≥50mm). The inner and outer rings are integrally forged from 42CrMo steel, with built-in double-row or triple-row rollers, heavy-duty metal seals, and the mounting holes are countersunk (suitable for bolts above M24). 3.Size Range: Outer ring diameter: 2000 - 6000mm, inner ring diameter: 1850 - 5800mm, height: 80 - 200mm. 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 machinery, wind power main units (above 5MW), heavy-duty crawler cranes. 6.Key Inspection Items: Flaw detection of forgings, anti-overturning moment, impurity-proof performance of seals.

Product Description

Large Diameter Slewing Bearings for Extreme Industrial Demands

When your machinery demands reliability under punishing conditions, Large Diameter Slewing Bearings deliver unmatched performance. Designed for outer ring diameters from 2000mm to 5000mm, these robust components excel in heavy-load scenarios like port cranes, wind turbines (5MW+), and metallurgical equipment. With 42CrMo steel construction and precision grinding, they withstand overturning moments up to 45,000 kN while operating seamlessly from -30℃ to 150℃.

Why Our Slewing Bearings Outperform?

  • Integrated R&D & Manufacturing: We control every step—ensuring φ500-5000mm bearings meet exact load, speed, and environmental needs.
  • Heat & Wear Resistance: Specialized heat treatment (carburizing/induction hardening) enables continuous operation in steel mills’ 150℃+ environments.
  • Agile Custom Production: Get φ3000mm+ non-standard slewing bearings in 25 days—30% faster than industry averages—via modular workflows.
  • Global Supply Chain: 1,000+ Large Diameter Slewing Bearings standard models ship in 48 hours; IoT-driven logistics support urgent orders worldwide.

Technical Excellence for Critical Applications

Parameter Specification
Outer Diameter 2000mm - 6000mm (expandable)
Static Load Capacity Up to 45,000 kN
Material 42CrMo4 / 50Mn / SAE 52100
Precision ISO 9001 P6/P5 (≤15μm radial runout)
Noise Level <50dB

Industry-Specific Solutions

  • Wind Energy: Offshore-grade bearings with 500μm Ni-Cr-Mo coating for 50-year salt spray resistance (DNV-ST-0419 certified).
  • Port Cranes: Triple-row roller slewing ring designs + fluororubber seals handle 30MN loads in humid, debris-heavy environments.
  • Mining: Impact-resistant GCr15SiMn rollers survive 5x overspeed cycles (ISO 24081 compliant).

Built to Last: Material & Quality

  • Forged Steel Rings: Vacuum-degassed 42CrMo/50Mn forgings prevent micro-cracks.
  • 3-Stage Grinding: Achieve ≤0.005mm surface roughness for smooth slewing bearing rotation.
  • 12+ Performance Tests: 100% inspected via FEA lifespan simulation, vibration analysis, and seal IP69K testing.

Seamless Procurement & Support

  • Fast Delivery: 48-hour shipping for 1,000+ standard bearing models.
  • Custom Workflow: Design review in 24 hours, prototype testing, and bulk production in 15-20 days.
  • Warranty: 5-year coverage for material and processing defects.

FAQs

Q: Can you integrate gear teeth into φ3000mm+ bearings?
A: Yes—we pre-machine ISO 1328-1 Class 6 gears to reduce crane assembly time by 20%.

Q: How do you prevent seal failures in dusty environments?
A: Our DustShield™ triple-lip seals with automated grease ports achieve IP69K dust/water resistance.

Q: What certifications do your offshore wind bearings have?
A: GL Wind 2010, DNV-ST-0419, and CE/UKCA marking.

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