1. Rigorous Material Selection

• High‑Carbon Chromium Bearing Steel (GCr15)

  • Exceptional hardness and wear resistance make GCr15 the industry standard for bearing balls.

  • Impurity levels (S, P) controlled below 0.01% to ensure long service life.

• Stainless Steel (304 / 316L)

  • Outstanding corrosion resistance and food‑grade safety for chemical, pharmaceutical, and food‑processing applications.

  • Salt‑spray tested ≥72 hours with zero rust formation.

2. Advanced Manufacturing Processes

1. Cold Heading

   • Precision‑cut steel wire is formed into near‑net ball blanks with diameter tolerance ≤0.3 mm.

2. Grinding & Polishing

   • Multi‑stage barrel grinding with diamond abrasives for up to 72 hours.

   • Final size and sphericity reach GB/T 308.1 G5–G10 levels (≤5 μm deviation).

3. Heat Treatment

   • Quenching at ~800 °C followed by tempering at ~160 °C delivers 58–62 HRC hardness.

   • Vacuum or gas‑protected furnaces prevent oxidation and discoloration.

4. Optional Surface Finishes

   • Chrome or nickel plating, PTFE coatings to enhance wear and corrosion resistance.

   • Surface roughness (Ra) controlled to ≤0.02 μm for ultra‑low friction.

3. Outstanding Performance Benefits

• Wear & Fatigue Resistance
  – Endurance tests: 1 million rotations with average wear ≤0.001 mm.

• High Precision
  – Available in G10–G5 grades to suit applications from general machinery to aerospace.

• Wide Temperature Range
  – Stable performance from –40 °C to +200 °C; specialized alloys withstand even higher extremes.

• Corrosion Resistance
  – 316L stainless balls endure salt‑spray ≥72 hours, ideal for marine and chemical environments.

4. Typical Application Scenarios

5. Why Partner with Us

1. Reliable Capacity & Lead Times
   – Automated lines produce over 100 million balls annually; on‑time delivery for large orders.

2. Full Customization
   – From diameter and material to precision grade and coatings, we manufacture to your drawings or samples.

3. Stringent Quality Control
   – 100% in‑line inspection with CMM, roundness testers, hardness testers, and salt‑spray chambers.

4. Technical Support & Service
   – Experienced engineering team provides material selection advice, failure analysis, and maintenance guidance.

5. Global Logistics Network
   – Partnerships with leading freight forwarders ensure fast, worry‑free delivery across North America, Europe, Southeast Asia, and beyond.

Conclusion

Whether you manufacture heavy‑duty machinery or cutting‑edge precision equipment, high‑quality steel balls are critical to performance, reliability, and efficiency. Contact us today for samples, technical consultation, and tailored solutions. Let our “industrial pearls” elevate your products and optimize your costs.