Si3N4 roller bearing
Si3N4 roller bearing
Si3N4 roller bearing
Si3N4 roller bearing

Silicion Nitride Roller Bearing Si3N4 Roller Bearing

Silicon nitride roller bearing is made of high purity silicon nitride powder as raw material and sintered at high temperature after forming.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-ZC001
  • Materials

    Si3N4
  • Shapes

    Mechanical Parts
  • Applications

    Mechanical Parts , Petrochemical Industry , Metallurgy Industry
Si3N4 roller bearing ceramic

Properties of Silicion Nitride Roller Bearing

 

1. High limit speed

Silicon nitride density is only 40% of steel density, operation centrifugal force 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 mechanical deformation of silicon nitride roller bearing 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 roller bearing 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, which is more than 5 times of steel bearings.

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 roller bearing 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 roller bearing

Applications of Si3N4 Roller Bearing

 

 

 

Silicon nitride roller bearing 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.

 

 

 

 

 

 

Size Chart of Si3N4 Roller Bearing

We are committed to delivering optimal silicon nitride roller bearings 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.

 

Listed requirements below shall be provided if customized design request:

1. Use environment, working temperature, design rotation speed, load and other parameters;

2. Size and tolerance requirements of outer diameter, inner diameter and height;

3. Drawings and specifications requirements, shall be provided if customized design request.

 

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

 

 

 

 

Si3N4 Roller Bearing
Item No. Inner Dia.
(mm)
Outer Dia.
(mm)
Width
(mm)
AT-SIN-ZC001 25 52 15
AT-SIN-ZC002 100 180 34

 

 

 

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*m1/2) 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. Bearing selection
It is need to choose the appropriate bearings according to the size of the shaft, tolerance and load, to avoid improper fit or overload.
 
 
2. Bearing installation
When install silicon nitride roller bearing, it is necessary to apply equal pressure on the circumference of the ring end face. In order to load the ring, it is forbidden to hit the bearing end face directly with a hammer, so as not to damage the bearing.
 
 
3. Matching of bearing and shaft
The fit selection of silicon nitride bearing must be selected according to the load direction and load features. For rotating load and indefinite load, the ring should adopt a static fit, and for static load, the combination of excessive fit and dynamic fit can be adopted.
 
 
4. Bearing lubrication
The silicon nitride roller bearing itself has a certain lubricity, but 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.
 
 
5. Bearing maintenance
Regularly check the vibration and noise of silicon nitride roller 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 Roller Bearing Packing

Si3N4 Roller Bearing Packing

 

 

Silicon nitride roller bearings are carefully packaged in appropriate containers to avoid any potential damage.

 

 

 

 

 

 

 

 

Customization Advantages
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

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.

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.

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.

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.

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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