Reliable Semi-finished Steel Bearing Cage

Steel Bearing Cage | Empowering Reliable Operation of heavy-duty equipment

A steel bearing cage, also known as a bearing retainer or bearing isolator, is a critical component in rolling bearings. Its primary function is to accurately separate and guide the rolling elements (such as balls or rollers), ensuring they maintain uniform spacing and smooth rotation within the bearing raceways. This prevents contact and friction between rolling elements. Positioned between the inner and outer rings, the cage plays a vital role in enabling high-speed, stable, and long-life bearing performance.
Steel bearing cages feature high strength, excellent toughness, and reduced weight, making them widely used in modern rolling bearings.

Manufacturing for Large-Scale Applications

Our company specializes in manufacturing large-size steel bearing cages with diameters ranging from 400 mm to 5 meters and weights from 100 kg to 9 tons.
These cages are made from carbon steel or alloy steel, materials selected for their superior strength, toughness, wear resistance, and weight optimization.
Drawing from our proven expertise in main shaft bearings and gearbox bearings for wind turbines, we deliver the same level of reliability and performance across a broader range of heavy-duty industries, including tunneling machines, mining equipment, and marine propulsion systems.

Core Advantage: From Wind Power — Beyond Wind Power

In the main drivetrain of wind turbines, main shaft bearings must withstand extreme impact loads, while gearbox bearings must operate under high-speed conditions. Our bearing cages are engineered to meet these demanding requirements and more:

• Extreme Strength and Impact Resistance:
  Optimized for low-speed, heavy-load, and high-impact applications. The cage structure ensures stability under extreme loads, evenly distributes stress, and eliminates early fatigue failures.

• High-Speed Stability and Smooth Operation:
  Designed for dynamic balance and low friction at high rotational speeds, minimizing heat generation and vibration for long-lasting bearing performance under complex conditions.

• Large-Scale Customization and Quality Assurance:
  With advanced large-part manufacturing processes and a comprehensive quality control system, we deliver consistent and reliable products in the range of diameter ≤ 5,000 mm, weight 100 kg – 9 tons, and height ≤ 800 mm.

We also have in-house design and tooling capabilities for ring-rolling Forgings , enabling production of both single-side and double-side profiled bearing cages according to customer requirements.

Technical Specifications

• Diameter: 400 mm – 5,000 mm
• Weight: 100 kg – 9 tons
• Height: ≤ 800 mm

Applications: Reliable Core, Driving Global Industries

Wind Power (Our Core Expertise)
As a trusted partner for main shaft bearing cages and gearbox bearing cages in the wind energy sector, our products have been tested under the most demanding conditions, ensuring reliability that supports the 20-year design life of modern wind turbines.

Extended Application Fields
Building on our proven experience in wind power, our bearing cages are now empowering other heavy industries:

• Construction & mining machinery:
  Providing robust support for tunnel boring machine main bearings and slewing bearings in large excavators.

• Marine & Offshore Equipment:
  Applied in marine propulsion systems and deck cranes, designed to withstand high loads and corrosive environments.

• Metallurgy & Heavy Industrial Equipment:
  Serving rolling mills and large reduction gearboxes operating under high-speed and heavy-load conditions.

• Special Vehicles & Industrial Drives:
  Enhancing reliability in engineering vehicles, high-speed pumps, and compressor systems.

• Ready-to-Mount Custom Alloy Steel Shrink Discs – precision-machined, fully assembled locking solutions
• Large-Diameter Custom Forged & Heat-Treated TRB Bearing Rings  – durable components for heavy-duty bearings
• Alloy Steel Double-Sided Profiled Bearing Cage Forgings – high-strength cages for industrial applications
• Alloy Steel Generator Shafts – robust shafts for wind power and other industrial equipment
• precision machined Planetary Shafts – high-accuracy shafts for multi-stage planetary gear systems
• High-Speed Planetary Gear Forgings – reliable, high-performance forged Gearbox Components for wind turbines and other heavy-duty transmission systems.