Production Range：
● 1.0MM-200MM
Production Grade:
● Up to G10
Applications：
● Valve– Sealing ball
● Bearing Ball
● Mixing ball
EDE glass balls are made of high-purity soda-lime glass or high-quality borosilicate glass, which are processed through a unique grinding technique to ensure their extremely high precision. To cater to the individual needs of our clients, we offer a variety of surface finishes including polished, frosted, and colored glass balls.
Due to their exceptional corrosion resistance and chemical stability, EDE glass balls have found widespread applications across multiple industries, including medical, food, cosmetics, and bearings. Whether used as valve balls to control fluid flow, stirring balls to promote material mixing, or check balls (sealing balls) to prevent media reflux, EDE glass balls demonstrate outstanding performance. Additionally, their use as bearing balls further demonstrates their excellent wear resistance and corrosion resistance.
We are committed to providing our clients with high-quality glass ball products that meet the needs of various industries. Whether it's ensuring the purity and safety of pharmaceutical products in the medical field, safeguarding the quality and hygiene of food and cosmetics, or enhancing the performance and lifespan of equipment in the bearing industry, EDE glass balls are your ideal choice.
| Glass ball | |||
| Physical Properties | Unit | Glass material | |
| Borosilicate | Soda-lime | ||
| Density | g/cm³ | 2.23 | 2.5 |
| Coefficient of thermal expansion | 10-6/℃ | 3.2 | 8.6~9.0 |
| Thermal shock performance | △T℃ | ≥280， good | Poor |
| Max thermal shock | ℃ | 160 | 180 |
| Heat resistance | ℃ | 500 | |
| Chemical stability | Good | Poor | |
| Mechanical load resistance | 65-70 | 65 | |
| Hardness (HV) | HV | ＞520 | ＞500 |
| Visible light transmittance | % | 92 | 81-88 |
| 360-400nm UV | % | 90~92 | |
| Infra red transmission | % | 90~92 | |
| Average specific heat | Jg-1k-1 | 0.98 | |
| Elastic modulus | KN/mm | 64 | 72 |
| Tensile strength | N/mm2 | 35~100 | |
| Operating temperature | ℃ | 1270 | 1020 |
| Softening point | ℃ | 820 | 720 |
| Annealing point | ℃ | 560 | 545 |
| Strain point | ℃ | 520 | 515 |
| DIN 5401-2002 | ||||||||
| Dimensional and formt tolerance and surface roughness | ||||||||
| Grade | Nominal Size | Limit deviations | tDws | ∆RSw(≤) | Ra(≤) | VDwL(≤) | IG | Preferred gauges values |
| VDws (≤) | ||||||||
| (mm) | (μm) | (μm) | (μm) | (μm) | (μm) | (μm) | (μm) | |
| G 3 | 0 ~ 12.7 | ± 5.32 | 0.08 | 0.08 | 0.01 | 0.13 | 0.5 | -5 ~ +5 |
| G 5 | 0 ~ 12.7 | ± 5.63 | 0.13 | 0.13 | 0.014 | 0.25 | 1 | -5 ~ +5 |
| G 10 | 0 ~ 25.4 | ± 9.75 | 0.25 | 0.25 | 0.02 | 0.5 | 1 | -9 ~ +9 |
| G 16 | 0 ~ 25.4 | ± 11.4 | 0.4 | 0.4 | 0.025 | 0.8 | 2 | -10 ~ +10 |
| G 20 | 0 ~ 38.1 | ± 11.5 | 0.5 | 0.5 | 0.032 | 1 | 2 | -10 ~ +10 |
| G 28 | 0 ~ 50.8 | ± 13.7 | 0.7 | 0.7 | 0.05 | 1.4 | 2 | -12 ~ +12 |
| G 40 | 0 ~ 100 | ± 19 | 1 | 1 | 0.06 | 2 | 4 | -16 ~ +16 |
| G 80 | 0 ~ 100 | ± 14 | 2 | 2 | 0.1 | * | 4 | -12 ~ +12 |
| G 100 | 0 ~ 150 | ± 47.5 | 2.5 | 2.5 | 0.1 | 5 | 10 | -40 ~ +40 |
| G 200 | 0 ~ 150 | ± 72.5 | 5 | 5 | 0.15 | 10 | 10 | -60 ~ +60 |
| G 300 | 0 ~ 25.4 | ± 70 | 10 | 10 | 0.2 | * | 20 | -60 ~ +60 |
| G300 | 25.4 ~ 50.8 | ± 105 | 15 | 15 | 0.2 | * | 30 | -90 ~ +90 |
| G 300 | 50.8 ~ 75 | ± 140 | 20 | 20 | 0.2 | * | 40 | -120 ~ +120 |
| G 500 | 0 ~ 25.4 | ± 75 | 25 | 25 | * | * | 50 | -50 ~ +50 |
| G 500 | 25.4 ~ 50.8 | ± 112.5 | 25 | 25 | * | * | 75 | -75 ~ +75 |
| G 500 | 50.8 ~ 75 | ± 150 | 25 | 25 | * | * | 100 | -100 ~ +100 |
| G 500 | 75 ~ 100 | ± 187.5 | 32 | 32 | * | * | 125 | -125 ~ +125 |
| G 500 | 100 ~ 125 | ± 225 | 38 | 38 | * | * | 150 | -150 ~ +150 |
| G 500 | 125 ~ 150 | ± 262.5 | 44 | 44 | * | * | 175 | -175 ~ +175 |
| G 600 | all | ± 200 | * | * | * | * | * | * |
| G 700 | all | ± 1000 | * | * | * | * | * | * |
| ABMA Std. 10A - 2001 | |||||
| Grade | VDws(≤) | ∆RSw(≤) | Ra(≤) | VDwL(≤) | (μm) |
| (μm) | (μm) | (μm) | (μm) | ||
| G3A | 0.08 | 0.08 | 0.012 | 0.13 | * |
| G5A | 0.13 | 0.13 | 0.02 | 0.25 | * |
| G10A | 0.25 | 0.25 | 0.025 | 0.5 | * |
| G16A | 0.4 | 0.4 | 0.025 | 0.8 | * |
| G24A | 0.6 | 0.6 | 0.05 | 1.2 | * |
| G48A | 1.2 | 1.2 | 0.08 | 2.4 | * |
| G100A | 2.5 | 2.5 | 0.125 | 5 | ±12.5 |
| G200A | 5 | 5 | 0.2 | 10 | ±25 |
| G500A | 13 | 13 | * | 25 | ±50 |
| G1000A | 25 | 25 | * | 50 | ±125 |
| G2000A | 50 | 50 | * | 100 | ±250 |
