Tower Crane Slewing Bearing

1.Product Introduction: Customized slewing bearings suitable for tower cranes, with external or internal gear drives, capable of withstanding overturning moments and impact loads during the operation of tower cranes, stable and reliable.
2.Structure Type: It has a large-diameter annular shape. The inner and outer rings are made of thick-wall 42CrMo steel, with built-in double-row steel balls. The outer or inner ring is machined with external or internal teeth (module 3 - 10). 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 and other series of tower cranes (for connecting the slewing platform).
6.Key Inspection Items: Tooth surface hardness (HRC58 - 62), anti-overturning moment performance, dust-proof performance of seals.

Product Description

Precision Tower Crane Slewing Bearings for Heavy-Duty Performance

When your tower crane’s rotation system demands unwavering reliability, our Tower Crane Slewing Bearing delivers unmatched durability and precision. Engineered with 30+ years of industry-specific expertise, these bearings are built to handle extreme loads (up to 50,000 kN·m), harsh environments, and non-stop operation. Whether you’re an OEM integrating components or a maintenance team replacing worn parts, our solutions combine P4-grade accuracy (±0.015mm) with rapid customization – all backed by a 99.9% quality pass rate.

Key Features at a Glance

  • Ultra-High Load Capacity: Supports axial, radial, and moment loads simultaneously.
  • Precision Engineering: P4/P5 grades with ≤35dB noise levels under full load.
  • Robust Materials: 42CrMo/50Mn forged steel, heat-treated to HRC 58-62 hardness.
  • Custom Sizes: Diameters from φ500mm to φ5000mm, tailored to your crane model.
  • IP67 Protection: Triple-layered seals prevent dust, moisture, and corrosion.

Built for Your Unique Crane Requirements

Need a slewing bearing with integrated flange mounts or oversized gear teeth? Our modular design system allows:

  • Non-Standard Modifications: Add sensor ports, lubrication points, or reinforced raceways.
  • Environment-Specific Upgrades: Anti-corrosion coatings for coastal sites, high-temp seals for desert use.
  • Fast-Track Prototyping: Get 3D models and FEM analysis reports within 72 hours.

Quality You Can Trust

Every Tower Crane Slewing Bearing undergoes:

  1. Material Screening: Spectral analysis to verify steel purity.
  2. In-Process Checks: Hardness mapping, gear profile scanning.
  3. Final Validation: 100% noise/vibration tests, torque consistency checks.

Why Global Clients Choose Us?

  • Faster Turnarounds: 1,000+ standard bearings ready for 48-hour shipping. Custom orders (e.g., φ3000mm with internal gears) delivered in 15-20 days – 30% quicker than industry averages.
  • Proven Cross-Industry Expertise: Designs adapted from port cranes (600,000+ cycles) and mining equipment. Solutions for wind resistance, seismic shocks, and -30°C to +80°C operation.
  • Lifecycle Support: On-site installation guidance, IoT-enabled health monitoring (optional), and predictive maintenance plans to extend bearing life by 40%.

FAQs

Q: Can you replicate bearings for older crane models?
A: Yes! We reverse-engineer legacy components using 3D scanning and provide CAD-approved samples.

Q: What's your minimum order quantity?
A: MOQ 1 for prototyping – ideal for testing custom bearing designs.

Q: How do you ensure corrosion resistance?
A: We apply Temcorr® coatings (5x salt spray resistance vs. standard treatments) and offer fluororubber seals.

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