Tag Archives: silicon nitride bearing

China supplier Polished Precision Silicon Nitride Ceramic Roller Bearing

Product Description

Polished Precision Silicon Nitride Ceramic Roller Bearing

The prime features of silicon nitride ceramic roller bearing
1.Low density:  3.2 g/cm 3   with lightweight than most other technical ceramics
2. Superior hardness, it’s 1 of most hardest technical ceramic than others
3. Great wear resistance due to its exceptional hardness and self-lubricity
4. Low coefficient of thermal expansion and high thermal conductivity (20 W/m.k)
5. Great thermal shock resistance, it’s up to 1000ºC under the special atmosphere
6. High mechanical strength and well resistance to impact than other advanced ceramics
7. Heat & high-temperature resistance, The max. service temperature can be up to 1300ºC
8. Chemical and corrosion resistance, resistant to almost all inorganic acids and many organic acids
9. At the same time, Silicon nitride is a high-performance electrical insulation material

The specification of the ceramic roller bearing

Material option Silicon nitride(Si3N4), Zirconia (ZrO2),  Alumina(Al2O3), Silicon carbide(SiO2)
Forming methods Dry pressed, Ceramic injection molding, Hot pressed, ISO pressed
Specification OD can be from 1 to 50mm, length can be from 10mm to 800mm
Precision processing CNC machining, Precision grinding, Polishing, Lapping, 
Tolerance The tolerance of OD and ID can be 0.001mm,  the tolerance of length can be 0.001mm
Key parameters Roughness to be 0.02mm, Parallelism to be 0.001mm
Surface quality Free of cracks, foreign contamination, mirror surface better than Ra0.1

The description of silicon nitride ceramic roller bearing
Silicon nitride is a man-made compound synthesized through several different chemical reaction methods. Parts are pressed and sintered by well-developed methods to produce a ceramic with a unique set of outstanding properties. The material is dark gray to black in color and can be polished to a very smooth reflective surface, giving parts a striking appearance. High-performance silicon nitride materials were developed for automotive engine wear parts, such as valves and cam followers, and proven effective. The cost of the ceramic parts never dropped enough to make the ceramics feasible in engines and turbochargers. The very high-quality bodies developed for these demanding high-reliability applications are available today and can be used in many severe mechanical, thermal, and wear applications.

The typical application of silicon nitride ceramics
They are widely used for producing bearings, shaft, gas turbine blades, mechanical seal rings, and permanent molds, steam nozzle, the heated surfaces of engine components

The gallery of Si3N4 ceramic parts


Datasheet of Technical ceramics

Property Unit Material
Si3N4   99.5% Al2O3 99% Al2O3 96%
Density g/cm3 ≥3.20 ≥3.90 ≥3.85 ≥3.65 ≥6.0
Water absorption % 0 0 0 0
Hardness HV 1700 1700 1500 1300
Flexural strength Mpa ≥600 ≥379 ≥338 ≥320 ≥1200
Compressive strength Mpa ≥2500 ≥2240 ≥2240 ≥2000 ≥1990
Fracture toughness Mpa m1/2 6 4-5 4-5 3-4 6.5-8
Max. service temperature ºC 1200 1675 1600 1450 1000
Coefficient of thermal expansion (CTE) 1×10 -6 /ºC 3.2 6.5~8.0 6.2~8.0 5.0~8.0 8.0~9.5
Thermal shock T(ºC) ≥600 ≥250 ≥200 ≥220 ≥300
Thermal conductivity(25ºC) W/m.k 20 30 29 24 3
Volume resistivity ohm.cm          
25ºC >1 x 10 14 >1 x 10 14 >1 x 10 14 >1 x 10 11
300ºC 1 x 10 12 8 x 10 11 10 12 -10 13 1 x 10 10
500ºC 5 x 10 10 2 x 10 9 1 x 10 9 1 x 10 6
Insulation strength KV/mm   19 18 18 17
Dielectric constant(1Mhz) (E) 6 9.7 9.5 9.5 29


Our capability and strength

We have in-housing comprehensive manufacturing types of equipment, including forming, sintering,
CNC machining, precision grinding, laser cutting, and so on, it helps us to control the quality very well.
Also, it greatly benefits cost control.

The state of the art manufacturing equipment

Rigorous Quality-control System

We have the complete quality-control system per ISO9001, including IQC, IPQC, QA, and OQC process.

Typical Packaging Proposal and Transportation Methods
1. Packaging proposal

2. Regular Transporation Methods

FAQs (Frequently Asked Questions)
Q1. Are you a factory or trading company?
A: We are a manufacturer with over 12 years of experience. You are welcome to visit our factory.

Q2: Do you send a sample to check?
A: Sure, the sample is free and freight collect.

Q3: When will you ship it?
A: If the products are in storage, we’ll ship within 48 hours

Q4: When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price.
Please call us or tell us in your email so that we will proceed with your inquiry as a priority.

Q5: Is it available to provide customized products?
A: We always support custom-made demand as per different materials, dimensions, and designs.

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Application: Refractory, Structure Ceramic, Industrial Ceramic
Material: Silicon Nitride
Type: Ceramic Parts
Product Name: Silicon Nitride Ceramic Roller Bearing
Shaping Methods: Dry Pressed, ISO Pressed, Hot Pressed
Density: Over 3.2g/cm3
US$ 50/Piece
1 Piece(Min.Order)




cam roller

How do cam rollers contribute to the adaptability and versatility of tracking systems in various settings?

Cam rollers play a significant role in enhancing the adaptability and versatility of tracking systems across various settings. Their design and functionality enable them to meet the diverse requirements of different applications. Here’s a detailed explanation of how cam rollers contribute to the adaptability and versatility of tracking systems:

  • Multiple Track Configurations: Cam rollers can be utilized in various track configurations, such as linear tracks, curved tracks, or complex multi-axis tracks. This flexibility allows tracking systems to adapt to different motion patterns and trajectories required by different applications. Whether it’s a straight-line motion, circular path, or customized multi-axis motion, cam rollers can be configured to accommodate a wide range of tracking requirements.
  • Adjustable Cam Profiles: The design of cam rollers allows for adjustable cam profiles. Cam profiles determine the motion characteristics of the tracking system, including acceleration, deceleration, and dwell periods. By modifying the cam profiles, cam rollers can be customized to suit specific application needs. This adjustability enhances the adaptability of tracking systems, enabling them to handle different speed profiles, motion sequences, or tracking patterns.
  • Modular and Scalable Design: Cam rollers are often designed with a modular and scalable approach, allowing for easy integration into different systems and the ability to scale up or down based on application requirements. They can be combined with other components, such as motors, gearboxes, or sensors, to create a complete tracking system. This modular design facilitates the adaptability and versatility of tracking systems, enabling customization and quick reconfiguration as per changing needs.
  • Wide Range of Load Capacity: Cam rollers are available in various sizes and configurations, offering a wide range of load capacities. From lightweight applications to heavy-duty industrial settings, cam rollers can handle different loads and forces. This versatility allows tracking systems to adapt to diverse payload requirements, making them suitable for applications ranging from small-scale automation to large-scale material handling.
  • Compatibility with Different Environments: Cam rollers are designed to operate in various environmental conditions. They can withstand factors like temperature variations, dust, moisture, and contaminants commonly found in industrial or outdoor settings. This compatibility with different environments enhances the adaptability of tracking systems, enabling their deployment in diverse industries such as manufacturing, logistics, automotive, and aerospace.
  • Integration with Control Systems: Cam rollers can be seamlessly integrated with electronic or computer-controlled components, such as sensors, actuators, or programmable logic controllers (PLCs). This integration allows for precise control, synchronization, and automation of tracking systems. By incorporating control systems, cam rollers can adapt to dynamic operating conditions, respond to real-time feedback, and enable advanced tracking functionalities.
  • Compatibility with Various Object Shapes and Sizes: Cam rollers are designed to accommodate a wide range of object shapes, sizes, and materials. They can track objects of different geometries, from flat panels to irregularly shaped components. This compatibility with various object characteristics enhances the versatility of tracking systems, enabling them to handle diverse workpieces, products, or materials.

The adaptability and versatility of tracking systems are significantly enhanced by the use of cam rollers. Their ability to work with different track configurations, adjust cam profiles, modular design, load capacity, environmental compatibility, integration with control systems, and compatibility with various object shapes and sizes makes them a valuable component in a wide range of applications, providing adaptability, flexibility, and versatility to tracking systems in diverse settings.

cam roller

Can you provide examples of products or machinery that commonly use cam rollers?

Cam rollers are widely used in various products and machinery across different industries. Their unique design and functionalities make them suitable for applications that require precise motion, controlled tracking, and efficient operation. Here are some examples of products or machinery that commonly utilize cam rollers:

  • Printing Machinery: Cam rollers are commonly found in printing machinery, such as offset printers, flexographic printers, and digital printers. They are used to precisely guide the movement of paper or printing substrates through the printing process, ensuring accurate registration and consistent print quality.
  • Material Handling Systems: Cam rollers are extensively used in material handling systems, including conveyor systems, packaging equipment, and automated storage and retrieval systems (ASRS). They help in guiding and tracking the movement of items, pallets, or containers, ensuring smooth and controlled transportation within the system.
  • Industrial Robots: Cam rollers play a vital role in industrial robots, particularly in robotic arms and manipulators. They facilitate precise and controlled motion, allowing the robot to perform accurate positioning, pick-and-place operations, and assembly tasks with high repeatability and reliability.
  • Textile Machinery: Cam rollers are commonly utilized in textile machinery, such as weaving looms, knitting machines, and spinning machines. They assist in guiding the movement of yarns, threads, or fabrics, ensuring proper tension and alignment during the manufacturing process.
  • Automotive Manufacturing: Cam rollers are employed in various stages of automotive manufacturing, including assembly lines, paint booths, and body-in-white operations. They contribute to the smooth and precise movement of car bodies, parts, or components, enabling efficient production processes.
  • Packaging Machinery: Cam rollers are commonly integrated into packaging machinery, such as form-fill-seal machines, cartoners, and labeling machines. They assist in guiding the packaging materials, ensuring accurate positioning, and controlled movement during the packaging process.
  • Food Processing Equipment: Cam rollers find applications in food processing equipment, including filling machines, sorting systems, and packaging lines. They aid in the smooth and precise movement of food products, containers, or packaging materials, maintaining the integrity and quality of the processed food items.
  • Medical Devices: Cam rollers are utilized in medical devices and equipment, such as diagnostic machines, laboratory automation systems, and surgical robots. They contribute to the precise movement and positioning required for accurate diagnostic results, sample handling, or surgical procedures.

These examples represent just a few of the many products and machinery where cam rollers are commonly used. Their versatility, precision, and reliability make them suitable for a wide range of applications in industries like printing, material handling, robotics, textiles, automotive manufacturing, packaging, food processing, and medical devices.

In summary, cam rollers are widely employed in various products and machinery across different industries. Their usage in printing machinery, material handling systems, industrial robots, textile machinery, automotive manufacturing, packaging machinery, food processing equipment, and medical devices demonstrates their significance in achieving precise motion, controlled tracking, and efficient operation in diverse applications.

cam roller

Can you describe the factors to consider when selecting cam rollers for specific applications?

When selecting cam rollers for specific applications, several factors need to be considered to ensure optimal performance, reliability, and longevity. The suitability of a cam roller for a particular application depends on various parameters and requirements. Here’s a detailed explanation of the factors to consider when selecting cam rollers:

  • Load Capacity: One of the primary considerations is the anticipated load capacity of the cam roller. The cam roller should have sufficient load-carrying capacity to support the expected radial and axial loads in the application. It is important to consider both static and dynamic loads, as well as any potential shock or impact loads that may occur.
  • Speed and Acceleration: The speed at which the cam roller will operate, as well as the acceleration and deceleration rates, should be taken into account. High-speed applications require cam rollers that can accommodate the associated centrifugal forces and provide smooth rolling motion without excessive heat generation. Additionally, the roller should be able to handle the acceleration and deceleration forces without compromising performance.
  • Precision Requirements: Depending on the application, precision requirements may vary. Some applications demand high positioning accuracy and minimal deviation, while others may have looser tolerances. It is important to select a cam roller that can meet the desired precision requirements, ensuring accurate tracking and motion control.
  • Operating Conditions: Consider the operating conditions in which the cam roller will be used. Factors such as temperature, humidity, dust, and corrosive environments can impact the performance and longevity of the cam roller. Choose a cam roller that is designed to withstand the specific operating conditions of the application, ensuring durability and reliability.
  • Lubrication and Maintenance: Proper lubrication is crucial for the smooth operation and longevity of cam rollers. Consider the lubrication requirements of the cam roller and whether it has provisions for effective lubrication. Additionally, assess the maintenance needs and accessibility of the cam roller for periodic inspection, lubrication replenishment, and potential replacement.
  • Mounting and Attachment: Evaluate the mounting and attachment options available for the cam roller. Different applications may require stud-type cam rollers or yoke-type cam rollers, depending on the attachment method and space constraints. Ensure that the chosen cam roller can be securely mounted and aligned with the moving parts of the system.
  • Cost and Availability: Finally, consider the cost and availability of the cam roller. Evaluate the overall cost-effectiveness of the selected cam roller, taking into account its performance, longevity, and maintenance requirements. Additionally, ensure that the chosen cam roller is readily available from reliable suppliers to avoid delays or compatibility issues.

By considering these factors, you can select the most suitable cam roller for a specific application, ensuring optimal performance, reliability, and longevity. It is advisable to consult with manufacturers or industry experts to obtain guidance and recommendations tailored to your specific requirements.

In summary, the factors to consider when selecting cam rollers for specific applications include load capacity, speed and acceleration requirements, precision needs, operating conditions, lubrication and maintenance considerations, mounting and attachment options, as well as cost and availability. Assessing these factors will help in choosing the appropriate cam roller that meets the unique demands of the application.

China supplier Polished Precision Silicon Nitride Ceramic Roller Bearing  China supplier Polished Precision Silicon Nitride Ceramic Roller Bearing
editor by CX 2024-03-28

China High Quality Ceramic Bearings ZrO2 Zirconia Si3N4 Silicon Nitride Bearing 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 bearing assembly

Sort: BALL
Structure: Deep Groove
Relevant Industries: Hotels, Garment Stores, Production Plant, Machinery Restore Stores, Farms, House Use, Foods Store
Bore Dimensions: 3 – fifty mm
Product Amount: 624742876Skype:chenyue1865Email:[email protected] Drive shaft axles for Prius Nhw20 R 2003-2009 C-TO151A-8H [email protected]:http:// http:// http://www.ceramicballbearings.cn

What you should know about bushings

If you are in the market for a casing, there are a few things you should know before buying. First, a bushing is a mechanical part with a rotating or sliding shaft part. You can find them in almost all industrial applications due to their excellent load-carrying capacity and anti-friction properties. They are especially important in construction, mining, agriculture, hydropower, material handling, and more.

Casing application

The casing market is mainly driven by the growth of the power generation industry. The increasing electrification of Asia Pacific and the deployment of renewable energy in countries such as Saudi Arabia and the UAE are driving the demand for distribution transformer bushings. In addition, the demand for bushings in Western Europe is also likely to increase with the spread of renewable energy and the installation of electric vehicle charging infrastructure. However, the market in Asia Pacific is expected to remain small compared to the rest of the world.
Although bushings are relatively expensive, they are very durable and cost-effective. Furthermore, bushings have a variety of applications, making them an important component in power transformers. For example, power transformers often use bushings to achieve relative movement by sliding or rolling. The vehicle suspension system also uses rubber bushings for a smooth ride and rotating bushings for machine-related operations. They require precision machined parts and are especially useful in applications where high loads and friction must be controlled. Also, plastic bushings are used for wheels in dry kilns, where lubrication is often troublesome.
Transformers require constant monitoring, which is one of the reasons bushings are so important in power transformers. Any failure of these components could result in the total loss of the transformer and all surrounding equipment. To maintain high system reliability, utilities must monitor insulation in and around bushings, especially if transformers have been in use for decades. Some utilities have made monitoring the condition of their transformers an important part of their smart grid plans.


The core of the dry casing has many material interfaces. The discharge most likely originates near the edges of the foils and can cause electrical tree growth or breakdown between adjacent foils. Several studies have investigated interfacial effects in composite insulating materials and concluded that the conditions under which the interface occurs is a key factor in determining the growth of electrical trees. This study found that material type and interface conditions are the two most important factors for the growth of electrical trees.
Bushings can be made of many different materials, depending on their purpose. The main purpose of the bushing is to support the assembly while protecting it. They must be stiff enough to support the load placed on them, and flexible enough to protect the shaft. Since the shaft is usually not centered on the bushing during rotation, the bushing must be durable enough to carry the load while still protecting the shaft. Here are several materials used for bushings:
A stabilizer bar assembly is a good example of pre-assembly. This pre-assembly enables the vehicle assembly plant to receive components ready for vehicle assembly. The prior art requires the vehicle assembly plant to separate the bushing from the stabilizer bar. However, the present invention eliminates this step and provides a mechanically rigid stabilizer bar assembly. It is designed to prevent audible squeals and improve vehicle performance and handling.
Hardened steel bushings are ideal for pivot and low speed applications. They are made of high carbon steel and fully hardened to 56-62 HRC. Bronze bushings require daily or weekly lubrication but are more expensive than plastic bushings. Plastic bushings are low cost, low maintenance, self lubricating and do not require regular lubrication. These are also suitable for applications with hard to reach parts.


Bushings have many applications in various industries. Most of the time, it is used for drilling. Its excellent chemical and mechanical properties can be used to protect various equipment. These components are versatile and available in a variety of materials. All sleeves are packaged according to national and international standards. They are used in many industrial processes from construction to drilling. Some application examples are listed below.The component 10 may contain a tank for a liquid such as fuel, and the object 12 may be made of fiber reinforced composite material. Sleeve assembly 16 is configured to ground component 10 and object 12 . It may be a bulkhead isolator 40 used to isolate electrical charges in aircraft hydraulic lines. Bushing assembly 16 is one of many possible uses for the bushing assembly. The following examples illustrate various applications of bushing assemblies.
Bearings are devices used to reduce friction between moving surfaces. They are a good choice for many applications as they are maintenance free and extend the life of machine components. They can be used in a variety of applications and are often used with plastic and metal materials. For example, Daikin offers bronze and brass bushings. Bushings have many other uses, but they are most commonly used in machines, especially when used in low-load environments.
The most common application for bushings is drilling. Swivel bushings can be used in almost any drilling application. For more complex applications, CZPT’s engineering department can create special designs to your specifications. The applications of bushings in machining centers are endless. By providing a smooth, reliable interface, bushings are an excellent choice for precision machining. They can also provide current paths.


When you have a vehicle that needs a bushing replacement, you may be wondering about the cost of a bushing replacement. The fact is, the cost of a bushing replacement will vary widely, depending on the specific car model. Some cars cost as little as $5, while other vehicles can cost up to $300. The replacement of a control arm bushing may not cost that much, but it’s important to know that it’s a relatively expensive part to replace.
Most mechanics charge around $375 for a job that involves replacing the bushing in a control arm. However, this price range can vary significantly, depending on whether the mechanic uses OE or aftermarket parts. In any case, the cost of labor is typically included in the price. Some mechanics may even include a labor charge, which is an additional cost. In general, however, the cost of a control arm bushing replacement is comparable to the cost of replacing a single bushing.
Control arm bushings are made of two metal cylinders secured together by a thick layer of rubber. Over time, these parts can deteriorate due to accidents, potholes, and off-roading. For this reason, it is important to replace them as soon as possible. Bushing replacement can save you money in the long run, and it’s important to have your vehicle repaired as soon as possible. If your control arm bushing is showing signs of wear, you should have it replaced before it becomes completely useless.
If you have decided to replace your suspension bushing yourself, the cost will be considerably lower than you would spend on the replacement of other components. If you have a mechanically-inclined mechanic, you can do it yourself. The parts and labour are reasonably cheap, but the most expensive part is the labor. Because it requires disassembling the wheel and suspension and installing a new bushing, it is important to have a mechanic who has a good understanding of vehicle mechanicry. The cost for control arm bushing replacement is between $20 and $80 per bushing, and a set of four costs approximately $300.


If you’ve come across a page containing information about Bushing, you may have been looking for more information. This disambiguation page lists publications about the person, but these have not been assigned to him. We encourage you to contact us if you know who the true author of these publications is. Nevertheless, if you’re searching for specific information about Bushing, we recommend you start with CZPT.

China High Quality Ceramic Bearings ZrO2 Zirconia Si3N4 Silicon Nitride Bearing 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910     bearing assemblyChina High Quality Ceramic Bearings ZrO2 Zirconia Si3N4 Silicon Nitride Bearing 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910     bearing assembly
editor by czh 2023-02-18