Silicion Nitride Bearing Roller Si3N4 Cylindrical Bearing Roller

Silicon nitride bearing roller is made of high purity silicon nitride powder as raw material and sintered at high temperature after forming, which is the core component of roller bearing. It has the characteristics of high temperature resistance, small thermal expansion coefficient, light weight, good wear resistance and corrosion resistance, good self-lubrication effect, etc., suitable for harsh working environment and high speed occasions.

Brand:
ATCERA
Item NO.:
AT-SIN-GZ001

Materials
Si3N4
Shapes
Mechanical Parts
Applications
Mechanical Parts , Petrochemical Industry , Metallurgy Industry

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Silicion nitride cylindrical bearing roller

Properties of Silicion Nitride Bearing Roller

1. High limit speed

Silicon nitride density is only 40% of steel density, so for silicon nitride bearing roller, the operation centrifugal force of bearing can be reduced, thereby limit speed can be significantly increased.

2. High precision

The hardness and Young's modulus of silicon nitride are much higher than that of steel, so the mechanical deformation is smaller under the same load, therefore silicon nitride bearing roller can be applied to occasions with higher precision requirements.

3. Longer service life

Silicon nitride bearing roller weight is light, and operation centrifugal force is smaller, raceway load can be reduced. What's more, the friction coefficient of silicon nitride is small, temperature rise is lower during operation, so the wear is less and bearing have longer service life when use silicon nitride roller, more than 5 times of steel bearings roller.

4. Lubrication free

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

5. High temperature and corrosion resistance

Silicon nitride bearing roller has high temperature resistance, and good resistance to acid, alkali and other chemical corrosion, it can be used in high temperature and chemical corrosion occasions.

6. Nonmagnetic

Silicon nitride is non-magnetic material, magnetic matter or abrasive particles are not easy to adhere to the bearing channel, which can reduce abrasive wear.

Si3N4 ceramic cylindrical bearing roller

Applications of Si₃N₄ Bearing Roller

Silicon nitride roller is the core component of roller bearing, load bearing capacity is strong, widely used in machining, chemical industry, metallurgy, aerospace and other industries, such as precision machine tools, engineering machinery, hydraulic pump, chemical pump, rail train, roller press, aviation engine, etc.AMB silicon nitride substrate is usually used as packaging substrate of high voltage, high power device, including power modules, high-frequency switching power supplies, relays, communication modules, LED modules, etc., particularly matches the third-generation semiconductor SiC power modules, which are widely used in electrical vehicles, rail transit, smart grid, aerospace and other fields.

Size Chart of Si3N4 Bearing Roller

We are committed to delivering optimal silicon nitride bearing rollers 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.

Drawing and parameter (including tolerance, surface roughness, etc.) requirements. shall be provided if customized design request.

Roller Grade (μm)
Tolerance Grade	Ra
Tolerance Grade	Rolling Surface (max)	End Face (max)	Chamfer (max)
0	0.1	0.125	1.25
Ⅰ	0.125	1.16	1.25
Ⅱ	0.16	0.25	2.5
Ⅲ	0.25	0.32	2.5

Send Requirements for Custom Design

Si3N4 Bearing Roller
Item No.	Diameter (mm)	Height (mm)
AT-SIN-GZ001	3	4
AT-SIN-GZ002	3	5
AT-SIN-GZ003	3	5.5
AT-SIN-GZ004	5	6.5
AT-SIN-GZ005	5	8
AT-SIN-GZ006	10	10

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. Before installing the silicon nitride roller, clean the oil or impurities on the surface and check the surface to ensure that there are no cracks and other defects.

2. The silicon nitride has a certain self lubricity, in order to further increase lubrication and ensure the service life of the bearing under high-speed rotation, an appropriate amount of lubricating oil or grease can be added.

3. Regularly check the vibration and noise of silicon nitride bearing, the temperature of bearing operation and the state of lubricating oil, according to the use of the environment and operating conditions of regular cleaning and maintenance, timely clean off the debris on the bearing.

Valuable Information

Si₃N₄ Bearing Roller Packing

Silicon nitride bearing rollers 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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