close
Choose Your Site
Global
Social Media
Views: 0 Author: Site Editor Publish Time: 2025-06-23 Origin: Site
In the realm of precision industry, few components bear as much responsibility as the humble bearing steel ball. Small in size yet critical in function, it determines not only operational smoothness but also the service life of machinery. As a B2B manufacturer and trader specializing in precision spheres, we take pride in ensuring that every steel ball embarks on a journey of accuracy from raw material to mechanical excellence.
Each ball starts with top-grade bearing steel such as GCr15 or AISI 52100. We work only with certified steel mills and conduct strict tests on every batch, including:
Chemical composition analysis
Microstructure inspection
Hardness and decarburization evaluation
Traceable quality control systems
This ensures the material meets high standards for fatigue life and wear resistance.
After cutting and forming, the steel blanks are softened through spheroidizing annealing to make their structure more uniform. We use automated furnaces with precise temperature control to achieve consistent machinability and heat treatment performance.
Through advanced quenching and tempering under controlled atmospheres, our steel balls achieve hardness levels of HRC 60–66 and excellent fatigue strength. Every heat-treated batch is inspected for:
Martensite structure
Oxidation prevention
Surface integrity
This step is crucial to ensure long-lasting durability in high-load applications.
Our production line features CNC grinders for coarse, semi-fine, and ultra-fine polishing. With tolerances as tight as ±0.001mm and surface roughness under 0.02μm, each steel ball achieves:
| Processing Stage | Dimensional Tolerance | Surface Roughness |
|---|---|---|
| Rough Grinding | ±0.01 mm | ≤0.5 μm |
| Precision Grinding | ±0.005 mm | ≤0.1 μm |
| Ultra Finishing | ±0.001 mm | ≤0.02 μm |
Every steel ball is sorted using smart sensors based on diameter, hardness, roundness, and weight. We provide full inspection reports and offer customized services:
Diameter: 0.3mm–50mm
Material: Steel, stainless, ceramic, brass, or glass
Precision levels: G10, G16, G20, etc.
Packaging and private label available
Our steel balls are widely used in:
Automotive: Wheel hubs, gearboxes, engines
Industrial equipment: Motors, turbines, machine tools
Robotics and automation
Medical instruments
Aerospace navigation systems
From high-speed rotation to harsh environments, our steel balls maintain exceptional reliability.
Behind every perfect sphere lies a commitment to excellence. With advanced equipment, rigorous standards, and deep manufacturing know-how, we deliver not just products—but confidence.
We don’t just produce steel balls—we produce precision.
