Shielded Bearings


ShieldTech Bearings Corporation – Premier Manufacturer and Supplier of Shielded Bearings

Our company is a leading manufacturer and distributor of Shielded Bearings, specializing in providing high-quality, innovative solutions for a diverse range of industrial applications. With a focus on precision engineering and advanced manufacturing techniques, we offer a comprehensive line of shielded bearings that excel in electromagnetic shielding, durability, and performance. Our shielded bearings are designed to reduce electromagnetic interference, prevent contaminant ingress, and ensure smooth, reliable operation in even the most challenging environments. We pride ourselves on our commitment to quality, service, and innovation, ensuring that our customers receive the best possible shielded-bearing solutions for their specific needs. Whether you’re looking for shielded bearings for power generation, automotive applications, or any other industrial use, our team of experts is ready to assist you in finding the perfect solution. Trust us to deliver the shielded bearings that keep your operations running smoothly and efficiently.
Advantages of Shielded Bearings Compared with Other Bearings
1. Protection from Contaminants: One of the primary advantages of shielded bearings is their ability to protect the rolling elements and raceways from dirt, dust, and other contaminants. While they are not entirely sealed off from the environment, the shields are highly effective at preventing large particles from entering the bearing assembly.2. Reduced Lubricant Leakage: Compared to open bearings, shielded bearings are better at retaining grease or other lubricants within the bearing. This helps maintain proper lubrication over an extended period, reducing the need for frequent maintenance and re-lubrication.

3. Longer Service Life: Shielded bearings often boast a longer service life by effectively preventing contaminants from entering and retaining lubrication. This is particularly beneficial in applications where bearings are subjected to harsh conditions.

4. Lower Friction: Shielded bearings typically exhibit lower friction than sealed bearings. The shields do not contact the inner ring, cage, or balls. Lower friction often translates to higher efficiency and less energy consumption in machinery.

5. Easier Maintenance and Handling: Since shielded bearings do not have seals that contact the rolling elements, they are generally easier to handle and maintain. They can be cleaned and inspected with less difficulty, which is beneficial in environments where bearings need to be regularly checked for wear and damage.

6. Cost-Effectiveness: Shielded bearings can be more cost-effective than sealed bearings because they typically require less stringent manufacturing processes for the shielding compared to sealing. This can make them a more economical option when conditions do not need full sealing protection.

7. Suitable for High-Speed Applications: Shielded bearings are often preferred in high-speed applications because they generate less heat due to reduced friction. Sealed bearings, by contrast, might not perform as well under high-speed conditions due to increased friction from seal contact.

8. Versatility: They are suitable for a wide range of applications. While they are not ideal for extremely dirty or wet environments (where sealed bearings might be preferable), they work well in various general engineering and industrial applications.

9. Availability: Shielded bearings are widely available in various sizes and designs, making them easy to integrate into numerous types of equipment without requiring special adjustments or components.

What are Shielded Bearings?

Shielded Bearings are bearings that are specially designed to provide electromagnetic shielding. Its characteristic is that a shielding layer is added to the bearing structure, which can effectively reduce or eliminate the impact of electromagnetic interference on the bearing operation, thereby improving the stability and reliability of the bearing. This kind of bearing also usually has good sealing performance, which can prevent external contaminants and moisture from entering the inside of the bearing, thereby extending the service life of the bearing. The manufacturing process of shielded bearings requires high-precision processing technology to ensure that the various components of the bearing can accurately fit and improve the operating accuracy of the bearing. In industrial automation, power electronics, aerospace, and other fields, shielded bearings are widely used due to their unique electromagnetic shielding performance and long life.

Application fields of Shielded Bearings


Electrical and Electronics Industry

Shielded bearings are crucial in electrical motors, generators, transformers, and other electrical equipment. They reduce electromagnetic interference (EMI) and ensure smooth operation. They are also essential in maintaining the integrity of electrical signals and preventing noise or distortions.

Aerospace and Aviation

In aircraft and spacecraft, where precision and reliability are paramount, Shielded Bearings play a vital role in ensuring the smooth operation of engines, avionics systems, and other critical components. Their ability to withstand extreme conditions and reduce electromagnetic noise is essential for safe and efficient flight.

Medical Equipment

Shielded bearings in medical imaging devices, surgical robots, and other precision medical equipment help minimize electromagnetic noise that could interfere with sensitive instrumentation, ensuring accurate diagnosis and treatment.

Automotive Industry

Shielded Bearings are used in motors, transmissions, and other components of electric and hybrid vehicles to reduce electromagnetic interference and improve efficiency. They also contribute to the overall reliability and durability of the vehicle.

Industrial Automation

Shielded bearings ensure the precision and reliability of motion control systems in automated production lines, robots, and other industrial machinery. They also help minimize electromagnetic noise that could affect sensor readings and control signals.

Energy Generation and Distribution

Shielded bearings are used in power plants, turbines, and transmission systems to reduce electromagnetic interference and ensure the smooth operation of generators and transformers. This contributes to the efficient generation and distribution of electricity.

Our Services


Electromagnetic shielding performance

One of the distinctive features of shielded bearings is their excellent electromagnetic shielding performance. By arranging a shielding layer inside or outside the bearing, the impact of electromagnetic interference on the bearing’s operation can be effectively reduced or eliminated, and the bearing’s stability and reliability can be improved.

Sealing performance

Shielded bearings usually have good sealing performance, which can prevent external contaminants and moisture from entering the inside of the bearing, thereby extending its service life. This sealing performance is significant in harsh working environments.

High-precision processing

The manufacturing process of shielded bearings requires high-precision processing technology to ensure that the various components of the bearing can fit accurately and improve the bearing’s operating accuracy and stability.

Correct selection and use of Shielded Bearings

The Right Choice for Shielded Bearings

Understand application requirements:
First, clarify the specific requirements of your equipment or system for bearings, including load, speed, working environment (such as temperature, humidity, pollutants, etc.), and electromagnetic environment.
Evaluate whether electromagnetic shielding is required and what level of shielding effectiveness is required.
Choose the right type and size:
According to the application requirements, select the appropriate bearing type (deep groove ball bearings, cylindrical roller bearings, etc.) and specifications (such as inner diameter, outer diameter, width, etc.).
Ensure the load and speed ratings of the selected bearings meet or exceed your application needs.
Consider materials and coatings:
Select a bearing material suitable for the working environment and consider factors such as corrosion resistance, wear resistance, and thermal stability.
Special coatings or surface treatments may be considered if additional electromagnetic shielding or corrosion protection is required.
Refer to manufacturer recommendations:
Communicate with shielded bearing manufacturers to learn about their product features and recommended applications.
Use the manufacturer’s recommendations and specifications to select the bearing best suits your application.

Correct use of Shielded Bearings

Install correctly:
Follow the installation guidelines and recommendations provided by the manufacturer to ensure that the bearings are installed correctly and to the intended accuracy.
Use appropriate tools and methods to avoid damaging the bearing or affecting its performance during installation.
Maintenance and care:
Check and maintain bearings regularly to ensure they are in good working order.
Perform necessary lubrication and cleaning according to manufacturer’s recommendations to extend bearing life.
Pay attention to the electromagnetic environment:
Avoid the influence of strong electromagnetic fields or electromagnetic interference sources when using shielded bearings.
If possible, appropriate electromagnetic shielding measures should be taken to improve the electromagnetic performance of the bearing further.
Logging and monitoring:
Record bearing usage and performance data so potential problems can be identified and dealt with promptly.
A monitoring system is used to track the condition of the bearing in real time to ensure it maintains optimal performance throughout its use.


How to identify the specifications of a shielded bearing? Identifying the specifications of a shielded bearing is essential for selecting the appropriate replacement or determining compatibility with a specific application. Here's a detailed explanation of how to...


How do I replace a shielded bearing? Replacing a shielded bearing requires careful handling and attention to detail. Here's a detailed explanation of the steps involved in replacing a shielded bearing: 1. Equipment preparation: Gather the necessary tools and equipment...


Are shielded bearings suitable for high-speed applications? Yes, shielded bearings can be suitable for high-speed applications, but their suitability depends on various factors such as the bearing design, materials, and operating conditions. Here's a detailed...


How to properly lubricate a shielded bearing? Proper lubrication is crucial for the optimal performance and longevity of shielded bearings. Here's a detailed explanation of how to properly lubricate a shielded bearing: 1. Select the appropriate lubricant: Choose a...

What types of Shielded Bearings are there?
1. Electromagnetic shielding bearings:
This bearing adds a shielding layer of conductive material on the inner and outer rings or rolling elements to reduce or eliminate electromagnetic interference. It is particularly suitable for equipment in high electromagnetic field environments, such as motors, generators, and transformers.2. Sealed and shielded bearings:
In addition to its electromagnetic shielding function, this kind of bearing also has excellent sealing properties, which can prevent liquid, dust, and other contaminants from entering the inside of the bearing. They are often used in applications that require high cleanliness or reliability, such as food processing, medical devices, and aerospace.

3. High-temperature shielded bearings:
This bearing uses special materials and designs to maintain stable performance and an electromagnetic shielding effect in high-temperature environments. It is suitable for high-temperature working environments such as high-temperature furnaces, heat treatment equipment, and thermal machinery.

4. High-speed shielded bearings:
Shielded bearings specially designed for high-speed rotation can withstand the centrifugal force and frictional heat caused by high rotational speeds while maintaining stable electromagnetic shielding performance. They are commonly used in high-speed motors, wind turbines, and machine tools.

5. Stainless steel shielded bearings:
Stainless steel shielded bearings have excellent corrosion resistance and mechanical strength. They are suitable for wet, corrosive environments or applications requiring high-strength support.

Why choose our company´╝č

1. High-quality products: Our company is committed to providing the highest-quality shielded bearings. Our products are precision-engineered and manufactured using advanced materials to ensure durability, reliability, and consistent performance.

2. Comprehensive Service: We pride ourselves on providing excellent customer service. Our professional team is ready to answer your questions, provide technical support, and provide solutions tailored to your needs.

3. Competitive Prices: Our company offers competitive prices without compromising quality. We believe in creating value for our customers and work hard to ensure our products fit every budget.

4. Excellent after-sales support: We know a product is only as good as the support you receive after purchasing it. Our company provides comprehensive after-sales services, including timely repair, replacement, and maintenance, ensuring that your shielded bearings remain in optimal condition for an extended period.

5. Rich product range: Our company provides a variety of shielded bearings shafts to meet different applications and requirements. We can provide you with the right product.