SUJ2 bearing steel balls, also written as SUJ-2, are widely used in precision bearings and motion systems, offering consistent load performance, wear resistance, and long fatigue life for demanding rolling applications.
Also known as bearing steel balls, SUJ2 steel ball is a standard material used in precision bearings and motion control applications.
SUJ2 bearing steel balls are produced from high-carbon chromium steel and are widely used in precision bearings and mechanical systems.Their through-hardened structure ensures consistent dimensional stability and reliable performance under high-speed and continuous rolling conditions.
Item | Specification |
Material | SUJ2 / AISI 52100 / 100Cr6 |
Size Range | 0.5 mm – 200 mm |
Hardness | 60 – 66 HRC |
Precision Grades | G10 – G1000 |
Density | 7.81 g/cm³ |
Standard | ISO 3290 / JIS standard equivalent |
Heat Treatment | Through-hardened |
Packing | 10 kg or 20 kg per carton, approx. 1 ton per pallet, or as required |
Condition | Dry or oiled (anti-rust protection) |
Delivery Time | Stock available or 35 days |
Element | C | Si | Mn | P | S | Cr |
Typical Value (%) | 0.93–1.05 | 0.15–0.35 | 0.25–0.45 | ≤0.025 | ≤0.015 | 1.35–1.65 |
Typical chemical composition shown for reference only. Actual values may vary slightly depending on the specific standard or material designation ordered.
