4 Point Contact Ball Bearing

1.Product Introduction: A single set of bearings can bear bidirectional axial loads and radial loads. The steel balls have four-point contact with the raceway, suitable for high-speed and high-stability rotation scenarios.
2.Structure Type: Inner ring + outer ring (with double circular arc raceways) + single-row steel balls + brass or steel cage. The inner ring and outer ring can be separated for convenient installation.
3.Size Range: Inner diameter: 20 - 600mm, outer diameter: 47 - 1000mm, width: 18 - 200mm.
4.Material: Inner ring / outer ring: GCr15/GCR15SIMN, rolling elements (steel balls): GCr15/GCR15SIMN, cage: brass (for high-speed) / steel (for heavy-duty).
5.Accuracy: Conventional P0 grade, precision models are of P6/P5/P4 grades.
6.Application Fields: Machine tool spindles, robot joints, turbochargers, high-end fans, aerospace equipment.
7.Key Inspection Items: Four-point contact conformity (≥ 98%), radial and axial load-bearing capacities, running stability (rotational speed ≥ 15000r/min), radial runout.

Product Description

Why Choose Our 4 Point Contact Ball Bearings?

4 point contact ball bearings are engineered to handle bidirectional axial and radial loads simultaneously, making them ideal for high-speed, high-stability applications like machine tool spindles, robotics, and aerospace systems. With four contact points between the steel balls and raceways, they offer superior load distribution and rotational accuracy. At LUOYANG INNO, we combine three decades of expertise with advanced materials like GCr15 steel and brass cages to deliver bearings that thrive under extreme conditions—from high-temperature furnace environments to heavy-load port machinery.

Technical Specifications

Parameter Specification
Load Capacity Axial 22 kN ~ 380 kN | Radial 19 kN ~ 340 kN handling for ball bearings
Temperature & Speed -50°C to 150°C (ceramic hybrid options available); Up to 15,000 RPM with low-noise bearing cages
Precision & Materials P0 standard, upgradable to P4 (≤3μm runout); Vacuum-degassed steel rings with anti-wear coatings
Dimensions & Customization Outer diameters up to φ5000mm custom bearing sizing

Key Advantages

  • Four-Point Load Distribution: Handles bidirectional axial forces efficiently within a single ball bearing raceway structure.
  • Industry-Specific Enhancements: Carburized steel cores for rolling mills, sub-35dB finishes for medical systems, and impact-resistant designs for crane bearings.
  • Rapid Prototyping & Delivery: 15-day average lead time for custom φ3000mm units, with 1,000+ standard bearings in stock.

Where Our Bearings Excel

  • Steel Production: High-durability 4 point contact ball bearings last 3+ years in continuous casting machines under high heat.
  • Precision Robotics: Achieves high repeatability in automated welding arms using precision ball bearings.
  • Energy Systems: Withstands high-vibration environments in turbine pitch control bearing assemblies.

Quality Backed by Science

Every 4 point contact ball bearing undergoes spectral steel hardness checks (60-64 HRC), 3D profilometer raceway inspection, and 500-hour accelerated lifespan testing under double rated loads.

FAQs

Q: Can you make 4 point contact ball bearings for φ3000mm shafts?
A: Yes! Our modular production delivers non-standard custom bearings in 15-20 days.

Q: What warranty applies to high-temperature bearing models?
A: 18-month coverage includes thermal deformation analysis for heavy industrial ball bearings.

Q: What is the minimum order quantity for custom 4 point contact bearing designs?
A: MOQ starts at 50 units for urgent prototyping and specialized applications.

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