China high quality Ssf61800-Zz Thin Section Ball Bearings with Mounted Flange carrier bearing

Product Description

Type No. Metric Type Bore Size: 1.50mm up to 12mm
Inch Type Bore Size: 0.0781″ up to 0.75″ 
Flanged Metric Type Bore Size: 1.50mm up to 12mm
Flanged Inch Type Bore Size: 0.0781″ up to 0.75″ 
Materials Inner/Outer Race AISI440C, AISI420
Balls AISI440C, AISI420, Si3N4 Ceramic
Retainer Rivet Cage, Crown Cage, Nylon Cage
Seals/Shields ZZ, ZZS, TTS, 2RS, 2RU
Precision ABEC-1, ABEC-3, ABEC-5, ABEC-7
Vibration & Noise Z1, Z1V1, Z2V1, Z2V2, Z3V3
Lubrication SRL,PS2, B325, SRI#2,  M28, Oil Lube, Dried, etc..

We mainly focuses on stainless steel small-sized ball bearings with full ranges. We’re especially good at the production of Extra-thin bearings, Bearings with flange, Hybrid Ceramic ball bearings, Non-standard bearings and Bearings with Teflon seals.

After decade of experiences to understand bearings and the needs of our clients, we spent much time and achieved enough capability for customized bearings, and continuously develop brilliant solutions for end-users. 

Applications: 
1). fishing equipments
2). hobby models
3). remote radio control products
4). power transmissions
5). medical instruments
6). office appliances, and more…

Q1: Can I get a free sample?
A1: We provide samples free in freight collected. For special samples requirement, please contact us for more details. 
Q2: How could I pay?
A2: We prefer T/T or L/C at sight. If you prefer other payment terms, please contact us freely.
Q3: What is your brand and packing way? Can you produce my brand and packing?
A3: Our brand is SGC and our own packing materials. We can make your brand. For more details, please contact us.
Q4: What is the delivery lead time?
A4: It depends on the order quantities. The mass production lead time is about 45-60 days after receipt of the deposit. 
Q5: Are you manufacturer or  trading company?
A5: We are manufacturer and exporter. We provide all kinds of OEM services for clients around the world.
Q6: Where is your main market?
A6: We export to the North America, Mexico, Australia, South-east Asia, Europe, U.A.E., Turkey, and other countries.

Our Services
1. Professional QC and QA team to make sure all products qualified before shipping.
2. Competitive price.
3 .Standard package to ensure the safe transportation.
4. Professional service.

Why choose us?
1. Production
    Qualified production, competitive price, professional service. 
2. Quality
    All products are inspected 100% before shipment by relative testing equipments.

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Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Single
Load Direction: Radial Bearing
Materials of Races: AISI440c
Materials of Balls: AISI440c
Samples:
US$ 0/Set
1 Set(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

shielded bearing

Can shielded bearings be used in high-temperature applications?

Yes, shielded bearings can be used in high-temperature applications, but their suitability depends on the specific temperature range and the bearing’s design and materials. Here’s a detailed explanation of using shielded bearings in high-temperature applications:

Shielded bearings are typically constructed with materials that can withstand a wide range of operating temperatures. The primary components of shielded bearings, such as the inner and outer races, rolling elements, and shields, are usually made from materials that exhibit good heat resistance.

When considering shielded bearings for high-temperature applications, it’s important to pay attention to the following factors:

  1. Temperature range: Determine the expected operating temperature range of your application. Shielded bearings have different temperature limits depending on the materials used. Exceeding these temperature limits can lead to premature bearing failure or degradation of lubrication. Consult the manufacturer’s specifications and guidelines to ensure the selected bearing is suitable for the intended temperature range.
  2. Bearing materials: Consider the materials used in the construction of the shielded bearing. Common materials include steel, stainless steel, ceramics, and high-temperature polymers. Each material has its own temperature limits and characteristics. Stainless steel and ceramic bearings, for example, often exhibit better heat resistance compared to standard steel bearings. Select a bearing material that can withstand the anticipated high temperatures without significant degradation.
  3. Lubrication: High temperatures can impact the performance and stability of lubricants used in shielded bearings. Evaluate the compatibility of the lubricant with the expected operating temperature. Some lubricants may degrade or evaporate at high temperatures, leading to inadequate lubrication and increased friction. Consider using high-temperature lubricants or consult with lubricant manufacturers to ensure proper lubrication under elevated temperature conditions.
  4. Sealing: Shields on shielded bearings provide some protection from external contaminants but may not be fully sealed against high-temperature environments. Consider using additional sealing options such as high-temperature seals or labyrinth seals to prevent the ingress of contaminants and retain lubrication. Proper sealing can help maintain the performance and reliability of the shielded bearing in high-temperature applications.
  5. Application-specific considerations: Some high-temperature applications may involve additional factors that need to be considered. For example, thermal expansion can affect the fit and clearance of the bearing. Expansion of the equipment or thermal cycling may introduce additional stresses on the bearing. Consult with bearing manufacturers or industry experts to address any specific challenges associated with high-temperature applications.

It’s important to note that while shielded bearings can handle high temperatures, there are limits to their performance. If the operating temperature exceeds the capabilities of shielded bearings, specialized bearing designs, such as high-temperature bearings or ceramic bearings, may be more suitable.

By carefully selecting shielded bearings with appropriate materials, lubrication, and sealing options, you can ensure their reliable operation in high-temperature applications while minimizing the risk of premature failure or damage.

shielded bearing

How to choose the right shielded bearing for my equipment?

Choosing the right shielded bearing for your equipment is crucial to ensure optimal performance, longevity, and reliability. Here’s a detailed explanation of the steps involved in selecting the right shielded bearing:

  1. Identify the application requirements: Start by understanding the specific requirements of your equipment and its operating conditions. Consider factors such as load (both radial and axial), speed, temperature, vibration, and environmental conditions. Determine the desired bearing life, maintenance intervals, and any special considerations unique to your application.
  2. Understand the bearing characteristics: Familiarize yourself with the different types of shielded bearings available and their respective characteristics. Consider factors such as the type of rolling elements (ball or roller), bearing material, lubrication requirements, and sealing options. Each characteristic affects the bearing’s performance in terms of load capacity, speed capability, temperature resistance, and durability.
  3. Consult bearing manufacturer catalogs and specifications: Refer to the catalogs, technical datasheets, and specifications provided by reputable bearing manufacturers. These resources contain detailed information about the available shielded bearings, including their dimensions, load ratings, speed limits, and other relevant data. Identify bearings that meet your application requirements based on the manufacturer’s recommendations.
  4. Consider bearing material and construction: Evaluate the suitability of different bearing materials for your application. Common options include steel, stainless steel, ceramics, and plastic. Consider factors such as corrosion resistance, temperature resistance, load capacity, and the specific conditions in which the equipment operates. Additionally, evaluate the bearing’s construction, such as the number of shields, cage design, and any special features that enhance performance or reliability.
  5. Calculate the bearing load: Determine the expected load on the bearing, considering both the radial and axial components. Calculate the equivalent dynamic load and static load based on the operating conditions, and compare them against the bearing’s load ratings provided by the manufacturer. Ensure that the selected bearing can handle the anticipated load without premature failure or excessive wear.
  6. Consider lubrication and sealing: Evaluate the lubrication requirements of the shielded bearing. Determine whether the bearing requires grease or oil lubrication and consider factors such as operating speed, temperature, and contamination levels. Additionally, assess the sealing options available for shielded bearings. Seals can help protect the bearing from contaminants and retain lubrication, enhancing its performance and service life.
  7. Seek expert advice: If you’re uncertain about the selection process or have specific application challenges, consider reaching out to bearing manufacturers or their authorized distributors. Their technical experts can provide valuable guidance and recommend the most suitable shielded bearing for your equipment based on their expertise and experience.

By following these steps and considering the relevant factors, you can choose the right shielded bearing that matches your equipment’s requirements. Remember to ensure compatibility with the shaft and housing, and follow proper installation and maintenance practices to maximize the bearing’s performance and longevity.

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.

China high quality Ssf61800-Zz Thin Section Ball Bearings with Mounted Flange   carrier bearingChina high quality Ssf61800-Zz Thin Section Ball Bearings with Mounted Flange   carrier bearing
editor by CX 2024-02-28

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