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shielded bearing

What is the price range for shielded bearings?

The price range for shielded bearings can vary depending on several factors, including the bearing type, size, brand, quality, and supplier. Here’s a detailed explanation of the price range for shielded bearings:

The cost of shielded bearings can range from a few dollars to several hundred dollars per bearing. The factors that influence the price of shielded bearings are as follows:

  1. Bearing type: Shielded bearings are available in various types, such as deep groove ball bearings, angular contact bearings, cylindrical roller bearings, and more. The price of shielded bearings can vary depending on the complexity of their design and the intended application.
  2. Bearing size: The size of the shielded bearing significantly impacts its price. Larger bearings that can handle higher loads and speeds tend to be more expensive than smaller bearings.
  3. Brand and quality: Well-known and established bearing brands typically command higher prices due to their reputation for quality and reliability. These brands often invest in research and development, precision manufacturing processes, and quality control measures to ensure their bearings meet or exceed industry standards. Lesser-known or generic brands may offer lower-priced shielded bearings, but their quality and performance may vary.
  4. Supplier and quantity: The supplier or distributor from which the shielded bearings are purchased can also affect the price. Different suppliers may offer different pricing structures or discounts based on factors such as order quantity, customer loyalty, or special promotions.
  5. Application-specific requirements: In some cases, shielded bearings may need to meet specific requirements or industry standards, such as high precision, high temperature resistance, or special certifications. Bearings designed for specialized applications or industries may come with a higher price tag due to the additional engineering and manufacturing considerations.

It’s important to note that the price of shielded bearings is usually indicated per bearing. If multiple bearings are required for an application, the total cost will depend on the quantity needed.

To get an accurate price range for shielded bearings, it’s recommended to contact bearing suppliers or distributors directly. They can provide detailed pricing information based on the specific requirements, quantity, and other factors relevant to the application. Comparing prices from different suppliers and considering the overall value, including quality, reliability, and service, is crucial in making an informed decision.

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What sizes are available for shielded bearings?

Shielded bearings are available in a wide range of sizes to accommodate various applications and equipment. Here’s a detailed explanation of the sizes available for shielded bearings:

Shielded bearings are typically categorized based on their bore diameter, outer diameter, and width. The most common sizing convention used for shielded bearings is the ISO (International Organization for Standardization) standard, which provides standardized dimensions and tolerances for bearings. The sizes of shielded bearings are usually specified using a combination of alphanumeric codes that represent their dimensions.

The bore diameter is the inner diameter of the bearing and is denoted by the letter “d”. It is typically measured in millimeters (mm) or inches (in). Common bore diameter sizes for shielded bearings range from a few millimeters up to several hundred millimeters, depending on the specific application and industry requirements.

The outer diameter of the bearing is denoted by the letter “D” and is also measured in millimeters or inches. The outer diameter of shielded bearings can vary significantly, ranging from small sizes to several meters for large industrial applications.

The width or thickness of the bearing is denoted by the letter “B” and is again measured in millimeters or inches. The width of shielded bearings can vary depending on the design and application requirements.

Additionally, shielded bearings may have different series or designations that indicate specific dimensional and performance characteristics. Common series for shielded bearings include the 6000 series, 6200 series, 6300 series, and so on. Each series has its own range of sizes and load-carrying capacities.

It’s important to note that the availability of specific sizes may vary among manufacturers and suppliers. However, most manufacturers offer a wide range of standard sizes to meet common industry needs. They may also provide customized or specialized sizes based on customer requirements.

When selecting shielded bearings, it’s crucial to identify the appropriate size that matches the application’s load, speed, and operating conditions. Consult the manufacturer’s catalogs, technical specifications, or contact their representatives to determine the available sizes and choose the optimal bearing size for your specific application.

shielded bearing

How does a shielded bearing differ from a sealed bearing?

A shielded bearing and a sealed bearing are two different types of rolling bearings that offer varying levels of protection against contaminants and retention of lubrication. Here’s a detailed explanation of the differences between a shielded bearing and a sealed bearing:

Shielded Bearing:

A shielded bearing incorporates shields made of metal (typically steel or stainless steel) to cover the rolling elements and raceways of the bearing. The shields act as a physical barrier against solid contaminants, such as dust, dirt, or debris, preventing them from entering the bearing. The primary functions of the shields are to protect the internal components from contamination and retain the lubricating grease or oil within the bearing.

Shielded bearings provide moderate protection against contaminants, but they are not completely sealed. They allow for some exchange of air and limited penetration of fine particles. Shielded bearings are suitable for applications where the risk of contamination is moderate and where regular maintenance and relubrication can be performed. They are commonly designated with the suffix “Z” or “ZZ” in the bearing model or part number.

Sealed Bearing:

A sealed bearing, on the other hand, incorporates sealing elements made of synthetic rubber or other materials to provide a more effective barrier against contaminants. The seals are designed to completely enclose the internal components of the bearing and prevent the ingress of solid and liquid contaminants, such as dust, dirt, water, or chemicals.

Sealed bearings offer a higher level of protection and are suitable for applications where the risk of contamination is high or where maintenance and relubrication are more challenging. The seals help to extend the bearing’s service life, reduce the need for relubrication, and provide enhanced protection in harsh or demanding environments.

Sealed bearings are typically designated with the suffix “RS” or “2RS” in the bearing model or part number. The “RS” suffix indicates a single seal on one side of the bearing, while “2RS” indicates seals on both sides.

It’s important to note that while sealed bearings provide superior protection against contaminants, they may generate slightly more friction and heat due to the increased sealing contact compared to shielded bearings. This can result in a slightly lower operating speed or higher torque compared to shielded bearings.

The choice between a shielded bearing and a sealed bearing depends on the specific requirements of the application, including the level of contamination risk, the need for maintenance and relubrication, and the operating conditions. Consulting with bearing manufacturers, distributors, or industry experts can help in selecting the most appropriate bearing type for a given application.

Overall, shielded bearings and sealed bearings are both effective solutions for protecting rolling bearings, and the selection depends on the desired level of protection and the specific application requirements.

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editor by CX 2024-02-10

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