China Standard 10 Pcs 627ZZ 7x22x7mm Shielded Miniature Ball Bearing Deep Groove Ball Bearings wholesaler

Product Description

Bearing No. Basic Dimensions Weight(kg) Designation
d(mm) D(mm) B(mm) B1(mm)
627 ZZ 7 22 7 7 0.01270 627 Z 627 ZZ 627 RS 627 2RS

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* Please kindly click the specific bearing no. as follows to get what you want.*

600 Series
Bearing No. Basic Dimensions Weight(kg) Designation
d(mm) D(mm) B(mm) B1(mm)
603 3 9 3 5 0.00087  603 Z 603 ZZ    
623 3 10 4 4 0.00165  623 Z 623 ZZ    
674 4 7 2 2.5 0.00571  674 Z 674 ZZ    
684 4 9 2.5 4 0.00063  684 Z 684 ZZ    
694 4 11 4 4 0.00017  694 Z 694 ZZ    
604 4 12 4 4 0.05710  604 Z 604 ZZ 604 RS 604 2RS
624 4 13 5 5 0.00303  624 Z 624 ZZ 624 RS 624 2RS
634 4 16 5 5 0.00524  634 Z 634 ZZ 634 RS 634 2RS
675 5 8 2 2.5 0.00026  675 Z 675 ZZ    
685 5 11 3 5 0.00120  685 Z 685 ZZ 685 RS 685 2RS
695 5 13 4 4 0.05715  695 Z 695 ZZ 695 RS 695 2RS
605 5 14 5 5 0.0 0571   605 Z 605 ZZ 605 RS 605 2RS
625 5 16 5 5 0.00495  625 Z 625 ZZ 625 RS 625 2RS
686 6 13 3.5 5 0.00191  686 Z 686 ZZ 686 RS 686 2RS
696 6 15 5 5 0.00388  696 Z 696 ZZ 696 RS 696 2RS
606 6 17 6 6 0.0571  606 Z 606 ZZ 606 RS 606 2RS
626 6 19 6 6 0.00815  626 Z 626 ZZ 626 RS 626 2RS
687 7 14 3.5 5 0.05710  687 Z 687 ZZ 687 RS 687 2RS
697 7 17 5 5 0.00526  697 Z 697 ZZ 697 RS 697 2RS
607 7 19 6 6 0.00767  607 Z 607 ZZ 607 RS 607 2RS
627 7 22 7 7 0.01270  627 Z 627 ZZ 627 RS 627 2RS
637 7 26 9 9 0.57100  637 Z 637 ZZ 637 RS 637 2RS
678 8 12 2.5 3.5 0.00071  678 Z 678 ZZ    
688 8 16 4 5 0.00330  688 Z 688 ZZ 688 RS 688 2RS
698 8 19 6 6 0.00723  698 Z 698 ZZ 698 RS 698 2RS
608 8 22 7 7 0.01210  608 Z 608 ZZ 608 RS 608 2RS
628 8 24 8 8 0.01720  628 Z 628 ZZ 628 RS 628 2RS
679 9 14 3 4.5 0.00305     679 Z 679 ZZ 679 RS 679 2RS
689 9 17 4 5 0.0571  689 Z 689 ZZ 689 RS 689 2RS
699 9 20 6 6 0.00845  699 Z 699 ZZ 699 RS 699 2RS
609 9 24 7 7 0.01450  609 Z 609 ZZ 609 RS 609 2RS
629 9 26 8 8 0.01950  629 Z 629 ZZ 629 RS 629 2RS
639 9 30 10 10 0.03650  639 Z 639 ZZ 639 RS 639 2RS


The deep groove ball bearing is the most commonly used rolling bearing. Its structure is simple and easy to use. Mainly used to bear radial load, but when increasing the bearing radial clearance, has a certain angular contact ball bearing performance, can bear the diameter, axial combined load. In the high speed and should not use thrust ball bearing, can also be used to bear pure axial load. With deep groove ball bearing specifications of the same size of other types of bearings, such bearings friction coefficient is small, high limit speed. But not impact resistant, not suitable for heavy load.


No. 1 Pre-greased: Premium Quality greae
No. 2 100% Chrome steel materials
No. 3 Low noise and low vibration at high speed operation
No. 4

Excellent stable performance for radial load applications 


Used in air conditioners, automobiles, industrial motors, agriculture machinery, textile machinery, motorcycles, washing machines, snow throws, lawn mowers, gym machinery, electric power tools, water pumps, etc.

Granville Industrial Company, which was founded in Britain and involved in various auto parts, is 1 of the important manufacturers and suppliers worldwide. We provide a strong full range of products, including:
> Bearings
> Oil seals, Transmission belt
> Chain and Sprocket
> Hub assembly & Wheel bearings
> Coupling, castings
> Linear motion

GIL is the brand of a professional manufacturer and supplier with bearing products.

We strictly follow the core of quality management process control:
> APQP: Product quality advanced plHangZhou
> SPC: Statistical process control
> MSA: Measurement system analysis
> FMEA: Analysis of potential failure modes and consequences
> PPAP: Production part approval procedure

Granville’s advanced service solutions can help you to:
> Improve productivity
> Reduce maintenance costs
> Improve energy efficiency
> Optimize designs
> Reduce time to market
> Reduce total cost of ownership

> Behavior-based, service-oriented, focused on results, and committed to continuous improvement.
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Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Single
US$ 0.25/Piece
1 Piece(Min.Order)


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Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

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.

shielded bearing

What materials are shielded bearings commonly made of?

Shielded bearings are commonly made from various materials to suit different application requirements. Here’s a detailed explanation of the materials that are commonly used to manufacture shielded bearings:

  • Steel: Steel is the most commonly used material for manufacturing shielded bearings. High-quality bearing steel, such as chrome steel (52100), is known for its excellent hardness, wear resistance, and load-carrying capacity. Steel bearings are suitable for a wide range of applications and offer good overall performance.
  • Stainless Steel: Stainless steel bearings are often used in applications where corrosion resistance is required. The stainless steel used in bearings is typically AISI 440C or similar grades, which contain high levels of chromium and provide excellent resistance to rust and corrosion. Stainless steel bearings are commonly used in industries such as food processing, medical equipment, marine, and chemical.
  • Ceramics: Ceramic bearings are gaining popularity due to their exceptional properties. The rolling elements and raceways in ceramic bearings are made from advanced ceramic materials, such as silicon nitride (Si3N4) or zirconia (ZrO2). Ceramic bearings offer advantages like high stiffness, low friction, high temperature resistance, and resistance to corrosion and electrical insulation. They are often used in high-speed applications, high-temperature environments, and industries such as aerospace and semiconductor manufacturing.
  • Plastic: Plastic bearings are used in applications that require lightweight, low friction, and resistance to chemicals or moisture. Common plastic materials used for shielded bearings include polyamide (nylon), acetal (POM), and polytetrafluoroethylene (PTFE). Plastic bearings are commonly found in industries such as electronics, automotive, and conveyor systems.
  • Hybrid: Hybrid bearings combine the advantages of different materials, typically featuring ceramic rolling elements and steel raceways. These bearings provide benefits such as reduced friction, increased speed capability, improved temperature resistance, and extended service life. Hybrid bearings are used in applications where a balance between performance, reliability, and cost is desired.

The choice of material for shielded bearings depends on factors such as the application requirements, operating conditions (such as load, speed, temperature, and environment), and cost considerations. It’s important to select the appropriate bearing material to ensure optimal performance, reliability, and longevity in a given application.

When sourcing shielded bearings, ensure that the material specifications and properties meet the specific requirements of your application. Consult with bearing manufacturers or suppliers to determine the most suitable material for your needs.

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 Standard 10 Pcs 627ZZ 7x22x7mm Shielded Miniature Ball Bearing Deep Groove Ball Bearings   wholesalerChina Standard 10 Pcs 627ZZ 7x22x7mm Shielded Miniature Ball Bearing Deep Groove Ball Bearings   wholesaler
editor by CX 2024-01-23

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