Ceramic Bearing Balls: Precision Rolling Elements for Industrial Bearings

Product Specifications

Technical details and manufacturing context for Ceramic Bearing Ball

Definition

A high-precision ceramic sphere manufactured as a rolling element for industrial bearings. These components are critical for applications requiring high-speed operation, corrosion resistance, or extreme temperature tolerance. They are typically manufactured from silicon nitride or zirconia ceramics through precision grinding and polishing processes. Ceramic bearing balls offer superior performance characteristics compared to traditional steel balls in specific industrial applications. Available in silicon nitride (Si3N4), zirconia (ZrO2), and alumina (Al2O3), they come in diameters from 1.588 to 50.8 mm, with grades from G5 to G100 per ISO 3290. Hardness is at least 78 HV, roundness deviation is 0.08–0.25 μm, and surface roughness is 0.01–0.02 μm Ra. Density ranges from 3.2 to 6.0 g/cm³ depending on material, compressive strength from 2000 to 4000 MPa, and fracture toughness from 4 to 10 MPa·m^0.5. Maximum operating temperature is 800–1000°C, electrical resistivity is 10^10–10^14 Ω·cm, and weight ranges from 0.01 to 1.5 g. These values are directory reference ranges; verify model-specific specifications with the manufacturer. The balls act as rolling elements between bearing races, reducing friction and enabling smooth rotational motion. They are selected based on load, speed, temperature, and environmental conditions. Proper installation and lubrication are essential for performance. Signs of wear include increased noise, vibration, or surface damage. Failure boundaries include fracture, spalling, or excessive wear, which can lead to bearing failure. Always consult the supplier for application-specific guidance.

Working Principle

Ceramic bearing balls function as rolling elements positioned between the inner and outer races of a bearing. They transmit load while minimizing rolling resistance, converting sliding friction into lower rolling friction. The high hardness and smooth surface finish of ceramic materials reduce wear and heat generation. Their electrical insulation properties prevent arcing in motors, and their thermal stability allows operation at elevated temperatures. The balls maintain precise geometry under load, ensuring even stress distribution and extended bearing life.

Common Materials

silicon nitride, zirconia, alumina

Technical Parameters

Parameter	Typical range	Notes & selection driver
DiameterRequired	1.588–50.8 mm	Precision ball diameterISO 3290
GradeRequired	G5–G100 G	Surface finish and sphericity gradeISO 3290
Material TypeRequired	Si3N4, ZrO2, Al2O3	Ceramic material composition
Hardness	≥78 HRA	Rockwell A scale (Si3N4 bearing balls)ISO 6508
Roundness	0.08–0.25 μm	Maximum deviation from perfect sphereISO 3290
Density	3.2–6.0 g/cm³	Si3N4: 3.2, ZrO2: 6.0, Al2O3: 3.9
Compressive Strength	2000–4000 MPa	Higher for Si3N4ASTM C773
Fracture Toughness	4–10 MPa·m^0.5	Si3N4: 6–8, ZrO2: 8–10ASTM C1421
Maximum Operating Temperature	800–1000 °C	Si3N4 up to 1000°C, ZrO2 up to 800°C
Electrical Resistivity	10^10–10^14 Ω·cm	Insulating, prevents arcingASTM D257
Surface Roughness	0.01–0.02 μm Ra	Critical for low frictionISO 4287
Weight	0.01–1.5 g	Depends on diameter and material

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Ceramic Sphere Part
Primary rolling element

Material: Silicon Nitride
Surface Coating Optional Part
Reduce friction and wear

Material: DLC or similar

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Ceramic Bearing Ball.

Manufacturers of Ceramic Bearing Ball

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

XIAMEN MASCERA TECHNOLOGY CO.,LTD.

Fujian, CN

Also makes: Thermocouple, Mechanical Seal, End-Effector and 2 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Procurement Evaluation Criteria

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Frequently Asked Questions

What materials are ceramic bearing balls made of?

Common materials include silicon nitride (Si3N4), zirconia (ZrO2), and alumina (Al2O3). Each offers different properties: silicon nitride is known for high strength and thermal stability, zirconia for toughness, and alumina for cost-effectiveness.

What are the typical size ranges and grades?

Diameters range from 1.588 to 50.8 mm, with grades from G5 to G100 per ISO 3290. Grade indicates sphericity and surface finish; lower numbers are higher precision.

How do ceramic balls compare to steel balls?

Ceramic balls are lighter, harder, and more corrosion-resistant than steel. They also provide electrical insulation and can operate at higher temperatures. However, they are more brittle and may have higher initial cost.

What are the key parameters to verify before use?

Verify diameter, grade, material type, hardness, roundness, density, compressive strength, fracture toughness, maximum operating temperature, electrical resistivity, surface roughness, and weight. Always confirm these with the manufacturer for your specific application.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 2 GPa static, 1 GPa dynamic
other spec:	Max rotational speed: 1.5 million DN (bore diameter in mm × RPM)
temperature:	-200°C to +800°C

Ceramic Bearing Ball

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards