Tower Crane Slewing Ring

1.Product Introduction: Slewing rings suitable for tower cranes, with external gear drives, capable of withstanding overturning moments and radial loads during the slewing of tower cranes, and suitable for high-altitude working environments.
2.Structure Type: It has an annular shape. The inner and outer rings are made of 42CrMo steel, with built-in double-row steel balls. The outer ring is machined with external teeth (module 3 - 8), and metal skeleton seals are used to prevent dust, and the mounting holes precisely match the tower crane body.
3.Size Range: Outer ring diameter: 800 - 2500mm, inner ring diameter: 700 - 2350mm, height: 40 - 100mm.
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: QTZ63, QTZ80, QTZ125 series of tower cranes.
6.Key Inspection Items: Tooth surface hardness of external gears, anti-overturning moment, dust-proof performance of seals.

Product Description

High-Performance Tower Crane Slewing Rings for Unmatched Durability & Precision

Custom-Built Slewing Solutions for Tower Cranes – ISO-Certified, Rapid Delivery, 30+ Years of Expertise

When your tower crane slewing ring is engineered to handle extreme loads, precision and reliability are non-negotiable. At LUOYANG INNO BEARING CO., LTD, we specialize in manufacturing heavy-duty slewing rings designed for tower cranes operating in demanding environments. With over three decades of expertise, our solutions combine high-purity steel, advanced heat treatment, and rigorous testing to deliver unmatched durability, smooth rotational movement, and resistance to wear.

Optimized for Tower Crane Performance

Tower crane slewing rings are critical components enabling 360° rotation under heavy axial, radial, and overturning moments. Our products are tailored for:

  • QTZ Series Tower Cranes: Compatible with QTZ63, QTZ80, and QTZ125 models.
  • Harsh Environments: Anti-corrosion coatings and fluororubber seals protect against dust, moisture, and temperature extremes.
  • Long-Term Stability: Double-row steel ball design distributes loads evenly, minimizing deflection even after 20,000+ rotations.

Technical Specifications

Parameter Details
Outer Diameter 800–2500mm (up to φ5000mm customized)
Load Capacity Up to 15,000 kN·m overturning moment
Hardness HRC 55–60 (gear surfaces)
Seals Nitrile rubber or high-temp fluororubber
Certifications ISO 9001, CE, EN 15056

Built to Last – Manufacturing Excellence

Our slewing rings undergo:

  • Precision Grinding: CNC-machined raceways for smooth rotation.
  • Heat Treatment: Quenching + tempering for uniform hardness and impact resistance.
  • 12+ Performance Tests: Torque rigidity, salt spray, and vibration testing ensure 99.9% qualification rates.

Why Partner With Us?

  • Fast Turnaround: Non-standard slewing rings (φ3000mm) delivered in 25 days.
  • 1,000+ SKUs: 48-hour shipping for standard models.
  • Global Support: Regional warehouses in EU, Asia, and Americas.
  • End-to-End Service: CAD design assistance, IoT-enabled load monitoring, and 24/7 technical support.

FAQs

Q: Can you customize gear profiles for unique torque requirements?
A: Yes! We adjust gear modules, tooth profiles, and mounting flanges to match your tower crane's specifications.

Q: How do your seals perform in dusty environments?
A: Our metal skeleton + fluororubber seals block 99% of debris ingress, even in sandy or wet conditions.

Q: Can you simulate load distribution before production?
A: Yes – our engineers provide FEA analysis to optimize your slewing ring design.

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