Silicon Nitride Ceramic Shaft Sleeve

Silicon nitride ceramic shaft sleeve is made of silicon nitride powder as raw material, sintered at high temperature after forming, as an important part of the mechanical device, it is installed between bearing and shaft, plays a protective and buffer role, also to reduce friction and wear, extend the service life of the shaft and bearing. Silicon carbide shaft sleeve is mainly used in rotating mechanical devices, such as engines, motors, reducers, pumps, etc.

Brand:
ATCERA
Item NO.:
AT-SNB-0001

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

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Properties of Silicion Nitride Ceramic Shaft Sleeve

1. Silicon nitride shaft sleeve has high mechanical strength, good toughness and wear resistance, which can provide support and protection for the shaft to avoid direct wear and failure of the shaft.

2. Silicon nitride sleeve has high temperature resistance, good corrosion resistance, it can separate shaft and bearing, to avoid bearing direct contact with high temperature environment or corrosive media.

3. Silicon nitride ceramic sleeve has self-lubrication, low noise, easy assembly, can be used for occasions that can not be lubricated or lubricated more difficult, such as vacuum, high temperature and other environments.

4. Silicon nitride sleeve has high thermal conductivity, small thermal expansion coefficient, also with large elastic modulus, so the deformation under high temperature or heavy load is very small, which is conductive to high precision operation.

Applications of Si₃N₄ Shaft Sleeve

Silicon nitride sleeve is installed between bearing and shaft, which can provide support for the shaft, prevent wear of the shaft, reduce friction between the shaft and the bearing so to reduce the operating resistance and extend service life of the equipment.

It is widely used in machinery manufacturing, aerospace, automobile manufacturing and medical equipment and other industries.

Size Chart of Si3N4 Shaft Sleeve

We are committed to delivering optimal silicon nitride shaft sleeves 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 requirements shall be provided if customized design request.

Machining Tolerance:

Diameter: ±0.003mm

Surfance roughness:Ra0.02

Cylindricity:±0.003mm

Concentricity:±0.002mm

Parallelism: ±0.002mm

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Silicon Nitride Ceramic Shaft Sleeve
Item NO.	Outer Dia. (mm)	Inner Dia. (mm)	Length (mm)	Purity (%)
AT-SNB-0001	20	12	43	85-99
AT-SNB-0002	17	9	43	85-99
AT-SNB-0003	15	10	45	85-99
AT-SNB-0004	19	11	47	85-99
AT-SNB-0005	23	13	51	85-99
AT-SNB-0006	24	14	58	85-99
AT-SNB-0007	28	20	61	85-99
AT-SNB-0008	30	22	68	85-99
AT-SNB-0009	32	26	70	85-99
AT-SNB-0010	37	30	72	85-99
AT-SNB-0011	43	35	83	85-99
AT-SNB-0012	48	40	108	85-99
AT-SNB-0013	59	45	108	85-99
AT-SNB-0014	70	35	108	85-99
AT-SNB-0015	76	40	120	85-99
AT-SNB-0016	93	80	124	85-99

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. Select appropriate sleeve

According to the working environment and equipment dimension, select the appropriate parameters and size of the silicon nitride shaft sleeve.

2. Install correctly

The silicon nitride ceramic shaft sleeve should be matched with the shaft and bearing inner ring to achieve a full range of uniform load.

3. Regular checkup

During operation of the equipment, the wear of the shaft sleeve should be checked regularly. If the wear is serious, or there are cracks or other defects, it needs to be replaced in time.

Valuable Information

Si₃N₄ Shaft Sleeve Packing

Silicon nitride shaft sleeves 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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