Crane Slew Ring

1.Product Introduction: Commonly known as crane slewing bearings, suitable for small and medium-sized cranes, capable of bearing medium and heavy loads, featuring flexible slewing and suitable for outdoor working environments.
2.Structure Type: It has an annular shape. The inner and outer rings are made of 50Mn steel, with built-in single-row or double-row steel balls, rubber seals on both sides, evenly distributed mounting holes, and some are equipped with simple gear rings.
3.Size Range: Outer ring diameter: 500 - 2000mm, inner ring diameter: 450 - 1850mm, height: 25 - 80mm.
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: Small and medium-sized tower cranes, mobile cranes, small port cranes.
6.Key Inspection Items: Slewing flexibility, position accuracy of mounting holes, sealing and waterproof performance.

Product Description

High-Temperature Resistant (500°C) & Heavy-Load Crane Slew Rings – Custom-Built in 25 Days

Engineered for Metallurgical Cranes, Port Machinery & Heavy-Duty Applications – 30+ Years of Precision Manufacturing

When your crane operations demand reliability under extreme stress, LUOYANG INNO's crane slew rings deliver unmatched performance. Designed for small to medium-sized cranes handling 500+ tons, our slew rings combine 50Mn steel durability with precision-ground raceways to withstand heavy shocks, high heat, and harsh outdoor environments. With 1,000+ standard sizes in stock and rapid custom manufacturing, we keep your projects moving.

Why Choose Us?

  • Built for Extreme Conditions: Forged 42CrMo alloy steel handles up to 150°C, while fluororubber seals achieve IP66 waterproofing for port/marine crane applications.
  • Impact Protection: GCr15SiMn rolling elements absorb heavy shocks, tested for 25,000 kN·m axial loads.
  • Precision Performance: P4-grade accuracy (≤0.05mm radial runout) ensures smooth rotation at ≤35dB noise levels.
  • Rapid Delivery: Standard crane slew rings (φ500–2000mm) shipped in 48 hours; custom large rings (up to φ5000mm) produced in 15–20 days.

Technical Specifications

Parameter Details
Diameter Range 500mm – 5000mm
Load Capacity Up to 800 tons
Materials 50Mn/42CrMo steel, GCr15SiMn rollers
Precision Grade P4 (ISO 492)
Noise Level ≤35dB at full load

Where Our Slew Rings Excel?

  • Metallurgical Cranes: Survive molten metal splashes and 150°C heat in steel plants.
  • Port & Offshore Cranes: Salt spray-resistant seals and epoxy coatings combat coastal corrosion.
  • Mining Equipment: Reinforced roller geometry handles cyclic loading from shovels and excavators.

Quality Assurance

Every crane slew ring undergoes raw material ultrasonic flaw detection, laser-scan dimensional verification (±0.01mm), and final validation via 12-hour load testing under simulated conditions.

FAQs

Q: How do your slew rings handle 150°C environments?
A: We use 42CrMo alloy steel hardened to HRC 55–60, paired with heat-stable fluororubber seals.

Q: Can you customize mounting patterns for existing cranes?
A: Yes! Share your bolt hole template – we'll match it precisely in CAD within 24 hours.

Q: What certifications do your products have?
A: All products meet ISO 9001, CE, and OSHA standards. DNV GL-certified slew ring options available.

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