1. Free samples available.
2. Certified by IATF, ISO, SGS, and OHSAS.
3. Professional factory established since 1988.
4. Covers 70 hectares of land.
5. Strong development and supply capabilities.
Steel Ball Grades
| GB/T 308.1-2013 & ISO 3290-1:2008 Standard | ||||||||
| GRADE | VDWS(max) | â–³Sph(max) | VDWL(max) | Ra(max) | Spacing Gauge Value | Priority Gauge Value | Spacing Dividers Gauge Value | Dividers Gauge Value |
| μm | ||||||||
| G3 | 0.08 | 0.08 | 0.13 | 0.01 | 0.5 | -5,...,0.5,0,+0.5,...,+5 | 0.1 | -0.2,-0.1,0,+0.1,+0.2 |
| G5 | 0.13 | 0.13 | 0.25 | 0.014 | 1 | -5,...,-1,0,+1,...,+5 | 0.2 | -0.4,-0.2,0,+0.2,+0.4 |
| G10 | 0.25 | 0.25 | 0.5 | 0.02 | 1 | -9,...,-1,0,+1,...,+9 | 0.2 | -0.4,-0.2,0,+0.2,+0.4 |
| G16 | 0.4 | 0.4 | 0.8 | 0.025 | 2 | -10,...,-2,0,+2,...,+10 | 0.4 | -0.8,-0.4,0,+0.4,+0.8 |
| G20 | 0.5 | 0.5 | 1 | 0.032 | 2 | -10,...,-2,0,+2,...,+10 | 0.4 | -0.8,-0.4,0,+0.4,+0.8 |
| G24 | 0.6 | 0.6 | 1.2 | 0.04 | 2 | -12,...,-2,0,+2,...,+12 | 0.4 | -0.8,-0.4,0,+0.4,+0.8 |
| G28 | 0.7 | 0.7 | 1.4 | 0.05 | 2 | -12,...,-2,0,+2,...,+12 | 0.4 | -0.8,-0.4,0,+0.4,+0.8 |
| G40 | 1 | 1 | 2 | 0.06 | 4 | -16,...,-4,0,+4,...,+16 | 0.8 | -1.6,-0.8,0,+0.8,+1.6 |
| G60 | 1.5 | 1.5 | 3 | 0.08 | 6 | -18,...,-6,0,+6,...,+18 | 1.2 | -2.4,-1.2,0,+1.2,+2.4 |
| G100 | 2.5 | 2.5 | 5 | 0.1 | 10 | -40,...,-10,0,+10,...,+40 | 2 | -4,-2,0,+2,+4 |
| G200 | 5 | 5 | 10 | 0.15 | 15 | -60,...,-15,0,+15,...,+60 | 3 | -6,-3,0,+3,+6 |
Material Composition
| Material | Material Composition | ||||||||
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Ni(%) | Cr(%) | Mo(%) | Cu(%) | |
| 100Cr6/SUJ2/AISIE52100/GCr15 | 0.98–1.05 | 0.15–0.35 | 0.25–0.45 | 0.02 max | 0.006 max | 0.1 | 1.40–1.65 | 0.05 max | 0.13 |
| Ti(%) | AI(%) | O(%) | N(%) | Pb(%) | Sb(%) | As(%) | Sn(%) | Ca(%) | |
| 0.002 max | 0.04 max | 0.0008 max | 0.004 max | 0.002 max | 0.005 max | 0.04 max | 0.03 max | 0.0008 max | |
| AISI440C | 0.95–1.10 | 0.80 max | 0.80 max | 0.035 max | 0.030 max | 0.30 max | 16.00–18.00 | 0.40–0.70 | 0.25 |
| AISI420C | 0.15–0.36 | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 1.00 max | 12–14 | - | 0.30 max |
| AISI304 | 0.08 max | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 8–10 | 18–20 | - | - |
| AISI316 | 0.08 max | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 10–14 | 16–18 | 2–3 | - |
Production Process
Packaging Options:
1. Plastic bag + box + carton + wooden pallet
2. Plastic bag + carton + wooden pallet
3. Export cartons + steel drums + wooden pallets
Our stainless steel balls are manufactured in a state-of-the-art facility located in Shandong, China. With over three decades of experience in the industry, we ensure that every product meets international quality standards. Whether it's for roller skates, bearings, bicycle parts, or guide rails, our products are designed to deliver superior performance and durability. We also offer flexible packaging options to suit different shipping needs, ensuring safe and efficient delivery worldwide.
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