Double-Row Angular Contact Ball Slewing Bearings

1.Product Introduction: With a double-row angular contact ball structure, capable of simultaneously bearing axial and radial loads, with an optional contact angle of 25° or 40°, suitable for high-precision slewing equipment.
2.Structure Type: It has an annular shape. The inner and outer rings have double-row angular contact raceways, with built-in double-row steel balls (with cages), seals on both sides, and some models have positioning steps.
3.Size Range: Outer ring diameter: 200 - 2000mm, inner ring diameter: 160 - 1850mm, height: 25 - 80mm.
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: Precision machine tools, robot joints, inspection instruments, high-end medical equipment.
6.Key Inspection Items: Accuracy of contact angle, radial runout, slewing resistance.

Product Description

Double-Row Angular Contact Ball Slewing Bearings for Extreme Heavy-Duty Applications

Engineered for High Axial/Radial Loads, Precision Alignment, and Harsh Environment Durability

Double-Row Angular Contact Ball Slewing Bearings are the backbone of industrial machinery requiring unmatched load capacity and rotational accuracy. With 30+ years of expertise, our bearings combine dual-row angular contact design, advanced material science, and precision engineering to handle axial and radial forces simultaneously. Ideal for wind turbines, port cranes, and medical imaging systems, they deliver P5-grade precision, corrosion resistance, and a 99.9% defect-free rate—ensuring reliability where failure isn’t an option.

Technical Specifications

Parameter Value/Range
Bore Diameter 200mm - 5000mm
Static Load Capacity 5,000 - 15,000 kN
Rotational Speed Up to 200 RPM
Precision Grade P4/P5 (ISO 492)
Noise Level <50dB in medical systems

Why Choose Us?

  • Dual-Load Mastery: Simultaneously manage axial loads up to 15,000 kN and radial loads with optimized 25°/40° contact angles.
  • Harsh Environment Ready: Operate between -50°C to +150°C using 42CrMo/50Mn steel with multi-layer hardening (60-62 HRC).
  • Precision Ground: Achieve ±0.01mm dimensional accuracy via CNC profile grinding for critical alignment in medical CT scanners or tunnel boring machines.
  • Custom-Built Solutions: Tailor bore diameters (200mm–5000mm), sealing (IP68/IP69K), or materials (non-magnetic titanium/ceramic hybrids) for your application.

Where Excellence Meets Demand?

Wind Energy
Withstand 20+ years of offshore saltwater exposure and 15 MN·m static loads in 5MW turbines. GL Wind Energy-certified with IoT-ready condition monitoring.

Construction & Mining
Absorb 300% shock loads in crawler cranes. Tungsten carbide-coated raceways combat abrasive debris.

Medical Imaging
Double-Row Angular Contact Ball Slewing Bearings with zero lubricant leakage, <25dB operation, and 0.001° rotational accuracy for MRI/CT systems. ISO 13485 & USP Class VI certified.

Quality & Global Support

  • Traceable Materials: EN 10204 3.1 certificates for every bearing batch.
  • Precision Verification: CMM-checked raceway geometry and <4.5µm/s vibration levels.
  • Global Logistics: 48-hour emergency dispatch for 1,000+ standard bearings and regional warehouses reducing lead times to 15 days for custom φ3000mm+ units.

FAQs

Q: Can these bearings handle saltwater environments in offshore turbines?
A: Yes. Our ISO 12944 C5-M compliant models use fluororubber seals and 316L stainless steel components.

Q: What precision is achievable for medical equipment?
A: We deliver ≤0.3µm runout (DIN 620-6 P2S class) using ceramic hybrid balls and vacuum-grade lubrication.

Q: How do you ensure large bearings (φ4000mm) meet tolerance specs?
A: In-house CNC grinding achieves ±0.03mm radial runout, verified via laser alignment systems.

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