窒化シリコンボール
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窒化シリコンボール
窒化シリコンボール
プロフィール
シリコン窒化物ボールは、軽量、高強度、優れた耐摩耗性、耐腐食性、耐高温性で知られています。耐久性、非磁性、絶縁性に優れています。摩擦係数が低く硬度が高いため、精密用途に最適で、従来の鋼球に比べて優れた性能と長い耐用年数を提供します。
硬度：非常に高く、耐摩耗性に優れています。
サイズ: 0.3mmから50mmまでのサイズをご用意しております。
用途:軽量、高強度、極度の温度に対する耐性が重要となる航空宇宙、自動車、医療などの業界で使用されます。腐食性や高温などの過酷な条件でも低摩擦と長寿命が求められる高速ベアリング、精密機器、環境に最適です。
Why Jiaxin Silicon Nitride Balls
Four advantages over typical silicon nitride ball suppliers.
Widest Size Range
0.3 mm miniature to 250 mm large balls — far exceeding the typical 50.8 mm limit of most suppliers.
Bearing-Grade Precision
Grades G3 to G60, significantly tighter than industry-standard G20 or grade 1000, ideal for precision bearings
30 Years, Fortune 500
Three decades of manufacturing experience, trusted by Fortune 500 oil, gas and chemical companies worldwide.
ISO Certified Quality
Every batch ships with material certificate and inspection report. Passivation and custom packaging available.
Characteristics
Key material properties that make silicon nitride the highest-performance bearing ceramic.
Ultra Lightweight
At ~3.2 g/cm³ — only 40% of steel's density, silicon nitride balls cut centrifugal load and enable far higher speeds.
High Hardness
HV 1500–1800 (HRA 78–85) with excellent fracture toughness, resisting wear and impact far better than other ceramics.
Thermal Shock Resistant
Low thermal expansion and high thermal conductivity let it survive rapid temperature changes up to 1200 °C.
Self-Lubricating
Silicon nitride has a low friction coefficient and can run under poor lubrication or dry conditions without seizing.
Chemistry
Reference composition of silicon nitride ceramic ball grades.
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Silicon nitride (Si3N4): ≥ 90% — the primary phase giving hardness and toughness
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Yttrium oxide (Y2O3): 3 – 6% — sintering aid enabling full densification
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Aluminium oxide (Al2O3): 2 – 5% — sintering aid and grain boundary phase
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Silicon dioxide (SiO2): ≤ 3% — surface oxide aiding sintering
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Iron (Fe): ≤ 0.1% — impurity strictly controlled
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Free silicon (Si): ≤ 0.5% — controlled for high-temperature performance
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Calcium (Ca): ≤ 0.1% — impurity strictly limited
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Oxygen (O): ≤ 3% — controlled to retain high-temperature strength
Microstructure of silicon nitride ceramic balls showing fine, interlocked grain structure.
Corrosion Resistance
Silicon nitride resists most acids, alkalis, molten metals and salt spray. It does not rust and is stable in vacuum and high-temperature environments.
Not recommended for: hydrofluoric acid and hot concentrated alkalis. For lower-cost chemical service, alumina is often sufficient.
Technical Specifications
Standard silicon nitride ball specifications. Custom dimensions available on request.
材質グレード
Si3N4 (GPS / HIPSN)
精密級
G3, G5, G10, G16, G20, G28, G40, G60
ヤング率
~310 GPa
表面仕上げ
ポリッシュ、ラッピング、またはカスタム
同等の名前
Silicon nitride, ISO 26602 Class I / II
Hardness
HV 1500–1800 (HRA 78–85)
Flexural
強度~700-1000MPa
供給条件
焼結、ラッピング、研磨
直径範囲
0.3 mm – 250 mm
Density
~3.2 g/cm³
Magnetism
非磁性
Certification
ISO 9001, material certificate, inspection report
Material Selection Guide
Compare silicon nitride with other common ball materials to choose the right one.
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Silicon nitride — 40% of steel's weight, highest toughness, runs dry. Best for high-speed and extreme-duty bearings. → Silicon nitride product page
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420C — HRC 48-56, moderate corrosion resistance. Lower-cost martensitic option. → 420C product page
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304 — ~HRC 25, good corrosion resistance. General-purpose non-magnetic. → 304 product page
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316 / 316L — ~HRC 25, excellent corrosion resistance. Best for marine and chemical. → 316 product page
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52100 Chrome Steel — HRC 60-67, low corrosion resistance. Highest wear resistance at lower cost. → Chrome steel page
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Silicon Nitride (Ceramic) — Extremely hard, corrosion-proof, lightweight. For extreme environments. → Ceramic ball page
International Grade Equivalents
Silicon nitride ceramic is known by different designations worldwide.
Common designation: Si3N4 (GPS / HIPSN / SRBSN)
ISO 26602: Class I / II
Other names: silicon nitride ceramic, ceramic bearing ball
Si3N4
GPS
HIPSN
SRBSN
Class I
Class II
ISO 26602
Si3N4
Industries Using Silicon Nitride Balls
Silicon nitride balls are chosen for the most demanding bearing and high-speed applications.
高速スピンドル
工作機械スピンドル、ターボチャージャー、歯科用ハンドピース、真空ポンプ、高速電気モーター。
航空宇宙&レース
航空機および航空宇宙用ベアリング、レーシング トランスミッション、風力タービン発電機、高精度ジャイロスコープ。
半導体と真空
半導体処理装置、真空ロボット、クリーンルーム機器、耐食ポンプ軸受など。
Lead Times & Ordering
Flexible supply for both standard and custom requirements.
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Standard sizes: Popular diameters in stock — typically 3-7 days for shipment.
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Custom orders: Lead time 15-30 days, based on diameter, grade and quantity.
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MOQ: Standard sizes have low MOQ. Custom sizes quoted per requirement.
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Packaging: Standard export packaging, or custom VCI bags, vacuum packing, bulk drums.
Technical Resources
Learn more about silicon nitride ceramic ball selection and applications.
Frequently asked questions
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