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Silicon nitride ball

It is widely used in demanding applications such as high-speed machine tool spindles, aerospace engines, and new-energy vehicles. Standard grades ranging from 0.4 to 63.5 mm are suitable for precision mechanical components like bearings, valves, and pumps, offering high strength, excellent wear resistance, and superior high-temperature performance. Grades from 1.588 to 50 mm meet the requirements of complex manufacturing processes, such as high-precision bearings and specialized equipment. Grades from 3.0 to 20 mm are employed in grinding operations, including surface finishing of electronic components.

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Detailed Introduction

Product Description:

Material: Silicon nitride

Diameter: 0.2 mm–80 mm;

Accuracy class: G3, G5

Hardness: HV1600–1800

Features:

Corrosion resistance: The Si–N covalent bond structure endows it with resistance to acids, alkalis, and seawater, making it suitable for applications in the chemical, medical, and other industries. Self-lubricating properties: It can operate without any lubricant, ideal for highly contaminated environments or settings where lubricants cannot be added.

Fatigue resistance: A high elastic modulus—44% higher than that of steel—and a low coefficient of thermal expansion extend bearing life and reduce deformation.

Applications: Widely used in high‑speed machine tool spindles, aerospace engines, new‑energy vehicles, and other fields with stringent material‑performance requirements. Standard grades ranging from 0.4 to 63.5 mm are suitable for precision mechanical components such as bearings, valves, and pumps, offering high strength, excellent wear resistance, and superior high‑temperature stability. Grades from 1.588 to 50 mm meet the demands of complex manufacturing processes, including high‑precision bearings and specialized equipment. Grades from 3.0 to 20 mm are employed in grinding operations, such as surface finishing of electronic components.

Physical properties:

High hardness and wear resistance: Hardness can reach HV1480 or higher, with excellent wear resistance, making it commonly used in precision components such as bearings.

Low density: With a density of 3.20 g/cm³, it is 59% lighter than steel, reducing centrifugal forces during high-speed operation.

High-Temperature Stability: Exhibits stable performance at 800°C, with a heat resistance exceeding 1200°C.

Magnetic properties: Non-magnetic and non-conductive: Offers excellent insulation, making it suitable for applications requiring electrical isolation.

Chemical composition: