Silicon Nitride Ceramic Ball Si3N4 Bearing Ball & Beads

Silicon nitride ceramic ball is a precision ceramic ball made of silicon nitride powder as raw material and refined at high temperature. It has high strength, good wear resistance, high temperature resistance, good corrosion resistance, light weight, density of only 3.2g/cm3, less than half of steel, and can achieve high-speed operation. At the same time, it has good self-lubricity and can be used in an environment without high pollution of lubricating media, so it becomes the first choice for all ceramic bearings and mixed ceramic ball bearings.

Brand:
ATCERA
Item NO.:
AT-DHG-Q001

Materials
Silicon Nitride (Si3N4) Ceramic
Shapes
Ball
Applications
Electronics and Electricity , Mechanical Parts , Petrochemical Industry , Metallurgy Industry , Lithium Battery Production

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Properties of Silicon Nitride Ceramic Ball

1. High limit speed

Silicon nitride ceramic density is only 40% of steel, so using silicon nitride balls as bearing balls can reduce the centrifugal force and increase the limit speed.

2. Longer service life

The silicon nitride ceramic ball has light weight, smaller centrifugal force of bearing operation, low load of raceway, and small friction coefficient, so it has less wear and longer service life, which is more than 5 times that of steel ball bearings.

3. Wide temperature range

Silicon nitride ceramic ball is resistant to high temperature, and the coefficient of thermal expansion is small, so the bearing clearance is less affected by temperature changes than steel bearings, therefore silicon nitride ball bearing can be used in a wider temperature range.

4. No lubrication

Silicon nitride ceramic ball has self-lubricating characteristics, usually no need to add lubricating oil or grease, so it can be applied to high vacuum and high cleanliness occasions, to avoid lubricating grease pollution.

5. Corrosion resistance

Silicon nitride ceramic ball has good resistance to acid, alkali and other chemical corrosion performance, it can be used in chemical corrosion occasions.

Applications of Si₃N₄ Bearing Ball

Silicon nitride ceramic ball has good wear resistance, no magnetic, good electrical insulation, acid and alkali corrosion resistance, self-lubrication, small friction coefficient, light weight, high temperature resistance, it can be used as rolling ball of bearing, and is widely used in high precision machinery, chemical industry, electronics, medical, high temperature environment, metallurgy, aerospace and other industries to ensure stable operation and long service life of equipment, also reduce maintenance costs.

Silicon nitride ceramic ball can be used as rolling ball for silicon nitride bearings and is widely used in the following industries:

1. Chemical industry

Silicon nitride bearing has good corrosion resistance, it is widely used in liquid and gas conveying equipment in the chemical industry, especially for occasions with corrosion media, such as pickling machines, chemical pumps, etc.

2. Electronics industry

Silicon nitride bearings have small friction coefficient, and weight is light, it is often used in precision machining equipment and electronic components, such as chip manufacturing devices, hard disk motors, high-precision machine tools, etc.

3. Machinery industry

Silicon nitride bearing has high compressive strength, good toughness, good wear resistance, low friction coefficient, it is widely used in the mechanical industry, such as high-speed motors, hydraulic pumps, precision machine tools, wind turbines, high-speed trains, etc., bearing long service life, good stability, reduce equipment maintenance costs.

4. Aerospace industry

Silicon nitride bearing because of its non-magnetic, good electrical insulation, high temperature resistance, high rigidity, good wear resistance and other advantages, in the aerospace field it has a very important application, such as aircraft engines, gyroscopes, inertial measurement devices and so on.

5. Metallurgy and high temperature environment

Silicon nitride bearing has high temperature resistance, good thermal shock resistance, widely used in metallurgy, rubber and plastic production equipment and other high temperature environment.

Size Chart of Silicon Nitride Bearing Ball

We are committed to delivering optimal silicon nitride ceramic bearing ball tailored to your exact specifications. Our dedicated team ensures meticulous adherence to your instructions, striving to exceed customer expectations. Additionally, we offer the flexibility of customized sizes to accommodate your unique requirements.

Diameter and specification requirements shall be provided if customized design request.(Maximum available diameter is 140mm)

Grade	Ball Diameter Variation (Vdws)	Sphericity Deviation (ΔSPH）	Lot Diameter Variation (Vdwl))	Surface Roughness (Ra)
G3	≤ 0.08	≤ 0.08	＜ 0.13	≤ 0.01
G5	≤ 0.13	≤ 0.13	＜0.25	≤ 0.014
G10	≤ 0.25	≤ 0.25	＜ 0.5	≤ 0.02
G16	≤ 0.4	≤ 0.4	＜ 0.8	≤ 0.025
G20	≤ 0.5	≤ 0.5	＜ 1	≤ 0.032
G100	≤ 0.7	≤ 0.7	＜ 1.4	≤ 0.0105

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Drawing of Silicon Nitride Bearing Ball

Silicon Nitride Bearing Ball
Item NO.	Diameter (mm)	Item NO.	Diameter (mm)
AT-DHG-Q001	0.1-0.2	AT-DHG-Q046	11.113
AT-DHG-Q002	0.2-0.3	AT-DHG-Q047	11.509
AT-DHG-Q003	0.3-0.4	AT-DHG-Q048	11.906
AT-DHG-Q004	0.4-0.5	AT-DHG-Q049	12.000
AT-DHG-Q005	0.5-0.6	AT-DHG-Q050	12.303
AT-DHG-Q006	0.6-0.7	AT-DHG-Q051	12.700
AT-DHG-Q007	0.7-0.8	AT-DHG-Q052	13.494
AT-DHG-Q008	0.8-1.0	AT-DHG-Q053	14.288
AT-DHG-Q009	1.0-1.2	AT-DHG-Q054	15.081
AT-DHG-Q010	1.2-1.4	AT-DHG-Q055	15.875
AT-DHG-Q011	0.794	AT-DHG-Q056	16.000
AT-DHG-Q012	1.191	AT-DHG-Q057	16.669
AT-DHG-Q013	1.588	AT-DHG-Q058	17.462
AT-DHG-Q014	1.984	AT-DHG-Q059	18.256
AT-DHG-Q015	2.000	AT-DHG-Q060	19.050
AT-DHG-Q016	2.381	AT-DHG-Q061	19.844
AT-DHG-Q017	2.500	AT-DHG-Q062	20.000
AT-DHG-Q018	2.778	AT-DHG-Q063	20.638
AT-DHG-Q019	3.000	AT-DHG-Q064	21.431
AT-DHG-Q020	3.175	AT-DHG-Q065	22.225
AT-DHG-Q021	3.500	AT-DHG-Q066	23.019
AT-DHG-Q022	3.969	AT-DHG-Q067	23.813
AT-DHG-Q023	4.000	AT-DHG-Q068	24.000
AT-DHG-Q024	4.500	AT-DHG-Q069	24.606
AT-DHG-Q025	4.763	AT-DHG-Q070	25.000
AT-DHG-Q026	5.000	AT-DHG-Q071	25.400
AT-DHG-Q027	5.556	AT-DHG-Q072	26.988
AT-DHG-Q028	5.953	AT-DHG-Q073	27.000
AT-DHG-Q029	6.000	AT-DHG-Q074	28.575
AT-DHG-Q030	6.350	AT-DHG-Q075	30.000
AT-DHG-Q031	6.747	AT-DHG-Q076	30.163
AT-DHG-Q032	7.000	AT-DHG-Q077	31.750
AT-DHG-Q033	7.144	AT-DHG-Q078	33.338
AT-DHG-Q034	7.500	AT-DHG-Q079	34.925
AT-DHG-Q035	7.938	AT-DHG-Q080	36.513
AT-DHG-Q036	8.000	AT-DHG-Q081	38.100
AT-DHG-Q037	8.334	AT-DHG-Q082	39.688
AT-DHG-Q038	8.731	AT-DHG-Q083	40.000
AT-DHG-Q039	9.000	AT-DHG-Q084	41.275
AT-DHG-Q040	9.128	AT-DHG-Q085	42.863
AT-DHG-Q041	9.525	AT-DHG-Q086	44.450
AT-DHG-Q042	9.922	AT-DHG-Q087	45.000
AT-DHG-Q043	10.000	AT-DHG-Q088	47.625
AT-DHG-Q044	10.319	AT-DHG-Q089	50.800
AT-DHG-Q045	11.000	AT-DHG-Q090	53.975

Drawing of Silicon Nitride Bearing Ball Cylinder

Silicon Nitride Bearing Ball Cylinder
Item NO.	Diameter (mm)	Height (mm)
AT-DHG-Q091	3.5	3.5
AT-DHG-Q092	4.5	4.5
AT-DHG-Q093	6.3	6.3
AT-DHG-Q094	8.7	8.7
AT-DHG-Q095	10.0	10.0

Technical Data of Silicon Nitride Materials

Si3N4 Type	Gas pressure sintering Si3N4	Hot pressing sintering Si3N4
Density (g/cm³)	3.2	3.3
Flexture strength (MPa)	700	900
Young Modulus (GPa)	300	300
Poisson's ratio	0.25	0.28
Compressive strength (MPa)	2500	3000
Hardness (GPa)	15	16
Fracture toughness (MPa*m^1/2)	5~7	6~8
Maximum working temperature (℃)	1100	1300
Thermal conductivity (W/m*K)	20	25
Thermal expansion coefficient (/℃)	3*10^-6	3.1*10^-6
Thermal shock resistance (ΔT ℃)	550	800

*This chart illustrates the standard characteristics of the silicon nitride materials commonly employed in the manufacturing of our Si₃N₄ products and parts. Please be aware that the attributes of customized silicon nitride products and parts may vary depending on the specific processes involved. Detailed parameter is decided by type and composition of stabilizing agent.

Usage Instructions

1. Avoid moisture and water

The water absorption rate of silicon nitride ceramic ball is very low, but long-term exposure to high humid environment or contact with water may still affect its performance, so it needs to be kept dry in the storage environment.

2. Avoid overheat

Excessive temperature may lead to deformation or cracking of silicon nitride ceramic ball, so it is necessary to avoid exceeding its upper temperature limit during use.

3. Avoid violent collisions

Be careful during use and transportation process to avoid violent collision, so as not to break or damage.

4. Regular inspection

During use, regular inspection and maintenance are required. If stains or impurities are found on the surface, they should be cleaned in time. Damaged balls need to be replaced in time.

Silicon Nitride Balls for Extreme Environments

Valuable Information

Si₃N₄ Bearing Ball Packing

Silicon nitride ceramic bearing balls are carefully packaged in appropriate containers to avoid any potential damage.

Customization Advantages

1. According to your application scenario, analyze the needs, choose the appropriate material and processing plan.

2. Professional team, quick response, can provide solutions and quotations within 24 hours after confirming the demand.

3. Flexible business cooperation mechanism, support at least one piece of quantity customization.

4. Quickly provide samples and test reports to confirm that the product meets your needs.

5. Provide product use and maintenance suggestions to reduce your cost of use.

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FAQ

Do you supply the materials unlisted on your website?

Although our primary focus is on advanced ceramic materials such as alumina, zirconia, silicon carbide, silicon nitride, aluminum nitride, and quartz ceramics, we are always exploring new materials and technologies. If you have a specific material requirement, please contact us, and we will do our best to fulfill your needs or find suitable partners.

Can you aid in material selection & ceramic product design?

Absolutely. Our technical team possesses profound knowledge of ceramic materials and extensive experience in product design. We are happy to provide you with material selection advice and product design support to ensure optimal performance for your products.

Do you have a minimum order value requirement?

We do not have a fixed minimum order value requirement. We always focus on meeting our customers' needs, and we strive to provide quality service and products regardless of the order size.

What services beyond ceramic products do you offer?

In addition to ceramic products, we also provide a range of additional services, including but not limited to: customized ceramic processing services based on your needs, using blanks or semi-finished blanks produced by yourself; if you are interested in outsourced ceramic packaging and metallization services, please contact us for further discussion. We are always committed to providing you with a one-stop solution to meet your various needs.

Do you offer international shipping services?

Yes, we do. No matter where you are located globally, we can ensure the safe and timely delivery of your order.

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