0.5mm-6mm High Precision G5 G10 Silicon Nitride Ceramic Bearing Ball

• Customization: Available
• Color: Black
• Diameter: 1 mm
• Model NO.: HBF-C010
• Material: Silicon Nitride
• Surface Finish: Polished
• Usage: Chemical, Petroleum
• Density: 3.26g/cm3
• Magnetic: No
• Size Stability: Excellent
• Webuller Modulus: 12-15
• Hardness: 16-20
• Certification: ISO9001
• Stock: Yes
• Surface: Polishing
• Name: Silicon Nitride Ceramic Bearing Ball
• Application: Structure Ceramic
• Type: Ceramic Balls
• Transport Package: Export Pallet
• Specification: customized
• Trademark: HIGHBORN
• Origin: Jiangsu, China
• Production Capacity: 20000PCS / Month
• Package Size: 12.00cm * 15.00cm * 5.00cm
• Package Gross Weight: 1.000kg

Product Description

Product Description

high hardness Si3N4 bead

High Precision Si3N4 Silicon Nitride Ceramic Precision Ball, hot isostatic pressed sintered black ceramic sphere, rolling element for hybrid ceramic & full ceramic bearings. 
Available precision grade: G3/G5/G10/G16/G20, diameter 0.5 -200mm, strict ISO3290 2 bearing ball manufacturing standard. 
Features low density 3.2 3.3g/cm³, ultra high hardness HV1500 1700, excellent electrical insulation, non magnetic, self lubricating, low friction, high temperature resistant, acid alkali salt water corrosion resistance, tiny thermal expansion coefficient.

G3 G5 G10 precision ceramic ball

Q1: What are the advantages of silicon nitride precision balls compared to steel balls?
A:  Lightweight, so centrifugal force is smaller at high speeds, leading to lower bearing vibration and a higher speed limit; 

Extremely hard, with a wear-resistant lifespan 10–30 times longer than steel balls; 

Insulating properties, can block motor shaft currents in variable-frequency drives, preventing ball electrical erosion;

 Non-magnetic, suitable for MRI and semiconductor precision equipment; 

Resistant to seawater, strong acids, and alkalis; 

Self-lubricating, can operate in vacuum or oil-free environments.

Mirror polished surface Ra≤0.02μm, ultra low roundness error, suitable for high speed spindle bearings, new energy motor, semiconductor apparatus, medical dental handpiece, aerospace parts, grinding medium and precision instruments. 

high polished silicon nitride sphere

Q2: How to choose between different precision levels G3/G5/G10 balls?
A:

G3 is ultra-precision, used in high-speed electric spindles, dental handpieces, and high-end precision bearings;

 G5 is mostly used in new energy motors and precision instruments;

G10 and lower grades are used as grinding media or in general industrial ceramic bearings. The higher the grade, the smaller the sphere error and the smoother the surface.

Technical Specifications

(Custom configurations available upon request.)

Material name	Unit	SI3N4(G.P.S)
Volume densityg	g/cm3	3.2-3.3
Hardness	HRA	90-93
Bending strength	MPa	500-700
Air hole rate	%	<1
Thermal expansion coefficient	1×10-6/C0	3.5
Breaking tenacity	MPa m1/2)	7
Thermal Conductivity	W/m·K	4

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FAQ

Q1: Can you provide exclusive customized solutions for special project demands? 
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Q3: How do you ensure on-time delivery for bulk orders? 
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Q4: Why is your factory price more stable than trading companies? 
A4: As a direct manufacturer, we control all links from raw material procurement, production processing to finished product output. There is no intermediate markup, and we can adjust costs according to long-term cooperative orders, maintaining stable and transparent pricing for long-term strategic partners.
 
Q5: What customized service items can you support besides product structure? 
A5: Besides structural size and precision tolerance customization of industrial ceramic and quartz products, we support personalized services including custom deep processing, surface treatment, laser marking, custom packaging and technical document customization to meet different industrial and brand standards.