China Standard Double Shielded Deep Groove Ball Bearing 6203zznr 6203nr 6303zz Nr CZPT Ball Bearing with Snap Ring with Hot selling

Product Description

Double Shielded Deep Groove Ball Bearing 6203ZZNR 6203NR 6303ZZ NR CZPT Ball Bearing with Snap Ring

<<Wide Application>>  Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics, dental equipment, elevators, ship rudder shafts, skateboards, inline skates, and scooters, among others.
<<Material>> The bearing is made of high-quality bearing steel, good durability, and resistance to heavy loads.
<<Features>> Pre-lubricated, normal accuracy, less friction, higher speed, smooth and low noise
<<Strictly Shielded>>  Shields on both sides of the bearing help to keep dust out.

>>  Single-row and double row
>>  Open and sealed types
>>  Chrome steel, ceramic or hybrid materials
>>  Polyamide, steel, and brass cage assemblies
– 6000 series: 604.605.606.607.608.609.6000.6001.6002.6003.6004.6005.6006.6007.6008……..
– 6200 series: 624.625.626.627.628.629.6200.6201.6202.6203.6204.6205.6206.6207.6208……..
– 6300 series: 634.635.636.637.638.639.6300.6301.6302.6303.6304.6305.6306.6307.6308……..
– 6400 series: 6403.6404.6405.6406.6407.6408.6409.6410.6411.6412.6413.6414.6415……..
– 6700 series: 673.674.675.676.677.678.679.6700.6701.6702.6703.6704.6705
– 6800 series: 685.686.687.688.689.6800.6801.6802.6803.6804.6805.6806.6807.6808……..
– 6900 series: 695.696.697.698.699.6900.6901.6902.6903.6904.6905.6906.6907.6908.6909……..
– 16000 series: 16001.16002.16003.16004.16005.16006.16007.16008.16009.16571.16011……..

Detailed Photos


Products Details

Miniature Bearings Thin Section Bearings Flanged Ball Bearings
Angular Contact Ball Bearings Deep Groove Ball Bearings Thrust Ball Bearings
Self Aligning Ball Bearings Stainless Steel Ball Bearings Ceramic Ball Bearings

Chrome steel miniature bearings for shaft sizes from 1.5mm to 9mm

609-2RZ-C3 9 mm 618/4-ZZ 4 mm 618/5-ZZ 5 mm
629-2RS-C3 9 mm 618/4-2RS 4 mm 618/5-2RS 5 mm
618/3 3 mm 618/4-2RZ 4 mm 618/5-2RZ 5 mm
618/3-ZZ 3 mm 619/4 4 mm 619/5 5 mm
618/3-2RS 3 mm 619/4-ZZ 4 mm 619/5-ZZ 5 mm
618/3-2RZ 3 mm 619/4-2RS 4 mm 619/5-2RS 5 mm
619/3 3 mm 619/4-2RZ 4 mm 619/5-2RZ 5 mm
619/3-ZZ 3 mm 604 4 mm 605 5 mm
619/3-2RS 3 mm 604-ZZ 4 mm 605-ZZ 5 mm
603 3 mm 604-2RS 4 mm 605-2RS 5 mm
603-ZZ 3 mm 604-2RZ 4 mm 605-2RZ 5 mm
623 3 mm 624 4 mm 625 5 mm
623-ZZ 3 mm 624-ZZ 4 mm 625-ZZ 5 mm
623-2RS 3 mm 624-2RS 4 mm 625-2RS 5 mm
623-2RZ 3 mm 624-2RZ 4 mm 625-2RZ 5 mm
633 3 mm 634 4 mm 635 5 mm
633-ZZ 3 mm 634-ZZ 4 mm 635-ZZ 5 mm
633-2RS 3 mm 634-2RS 4 mm 635-2RS 5 mm
633-2RZ 3 mm 634-2RZ 4 mm 635-2RZ 5 mm
618/4 4 mm 618/5 5 mm 618/6 6 mm

Some advantages of HOJE Thin Section Ball Bearings are:
• Light weight    • Space Saving   • High stiffness 
• Accurate positioning   • Reduced overall design costs
• Can be successfully used in numerous bearing applications
• Easily modified or customized   • Multi-load capabilities 
• Variety of cross-sections & sizes 
• ABEC 1,3,5, and 7 available   • Race materials: 440C, 17-4PH, M50
• Ball materials: 440C, ceramic   
• Separator options: Phenolic, nylon, toroid,  formed wire, spacer balls, full complement,  helical coil springs

Thin Section Bearing Applications: 
• Polishing equipment • Textile equipment 
• Paper-making and  converting equipment
• Printing machinery
• Specialized industrial  equipment
• Tube and pipe-cutting equipment


Flanged bearings have a solid steel flange on the outer ring. This allows the bearing to be more easily located in a housing. The flange can also help to prevent axial movement of the bearing in the event of a thrust load on the bearing.

Bearing Number Bore Outer Width Flange Outer Flange Thickness
F6800 10 mm 19 mm 5 mm 21 mm 1 mm
F6900 10 mm 22 mm 6 mm 25 mm 1.5 mm
F6801 12 mm 21 mm 5 mm 23 mm 1.1 mm
F6901 12 mm 24 mm 6 mm 26 mm 1.5 mm
F6802 15 mm 24 mm 5 mm 26 mm 1.1 mm
F6902 15 mm 28 mm 7 mm 30 mm 1.5 mm
F6803 17 mm 26 mm 5 mm 28 mm 1.1 mm
F6903 17 mm 30 mm 7 mm 32 mm 1.5 mm
F6804 20 mm 32 mm 7 mm 35 mm 1.5 mm
F6904 20 mm 37 mm 9 mm 40 mm 2 mm
F6805 25 mm 37 mm 7 mm 40 mm 1.5 mm
F6905 25 mm 42 mm 9 mm 45 mm 2 mm
F6806 30 mm 42 mm 7 mm 45 mm 1.5 mm
F6906 30 mm 47 mm 9 mm 50 mm 2 mm
F6807 35 mm 47 mm 7 mm 50 mm 1.5 mm
F6907 35 mm 55 mm 10 mm 58 mm 2.5 mm
F6808 40 mm 52 mm 7 mm 55 mm 1.5 mm
F6908 40 mm 62 mm 12 mm 65 mm 2.5 mm
F6809 45 mm 58 mm 7 mm 61 mm 1.5 mm
F6909 45 mm 68 mm 12 mm 71 mm 2.5 mm
F6810 50 mm 65 mm 7 mm 68 mm 1.5 mm
F6910 50 mm 72 mm 12 mm 75 mm 2.5 mm

Our Stainless Steel and Thermoplastic Units outperform under the toughest of conditions. 
• Easy to install
• Reduces production downtime
• Complies with food safety regulations
• Long bearing life
• Can be customized to meet specific customer requirements
• HOJE offers product stocking programs
Stainless Steel and Thermoplastic housing:
• Cleaning and chemical resistant
• 440C Stainless Steel Bearings
• High Tensile Strength Housings
• Withstands Regular Washdowns
• Solid Stainless Steel  Bolt Hole Bush

Properties advantages of ceramic bearings compared with steel ball bearings: 
1. Higher limiting speeds: Ceramics is lighter than steel and can effectively restrain the centrifugal force, therefore enhancing the limiting speeds.
2. Higher precision usage: Ceramic has a higher hardness and elastic modulus than steel, which means ceramic bearings are more rigid than steel bearings, so therefore can be used in higher precision conditions.
3. Longer life: Lighter ceramic leads to a lower centrifugal force, this will extend the life of the bearing. Furthermore, the friction coefficient of ceramic is lower than steel, which also extends the life of the bearing
4. Higher temperature usage: Ceramic is more mechanically stable at elevated temperatures, therefore they could be used under higher temperatures.
5. Temperature-variation usage: Ceramics has a lower thermal expansion coefficient, and the clearance and tolerance variation is lower than those of steel bearings, which leads to a greater variation in the temperature range.
6. Better seizure resistance: Ceramics has a smaller thermal expansion coefficient; indicating less thermal deformation, therefore enhancing seizure resistance.
7. Could run without oil or grease: Ceramic never rusts and is self-lubricated, therefore can be used in applications that require no oil or grease.
8. Resistant to acid, alkali, and salt: The chemical industry is the largest potential application industry of ceramic bearings to be exploited.
9. More suitable for magnetic applications: Our ceramic bearings are non-magnetic, which means it is difficult for magnetic particles to adhere to the race, therefore reducing particle abrasion.



Packaging & Shipping


 1)Commercial Bearings packaging: 1pc/plastic bag + color box + carton + pallet
 2)Industrial Bearings packaging 
 3)According to the requirement of customers
 1) T/T:30% deposit, 70% should be paid before shipment.
 2) L/C at sight. (high bank charge, not suggested, but acceptable )
 3) 100% Western Union in advance. (especially for air shipment or small amounts)
 1) Less than 45 KGS, we will send by express. ( Door to Door, Convenient )
 2) Between 45 – 200 KGS, we will send by air transport. ( Fastest and safest, but expensive )
 3) More than 200 KGS, we will send by sea. ( Cheapest, but long time )



Company Profile

HangZhou HOJE Bearing Co., LTD Specializing in the manufacture and sales of bearings and bearing accessories, we mainly produce deep groove ball bearings, spherical bearings with seats, tapered roller bearings, and related components. Our factory has the most advanced equipment, first-class mechanical professional and technical personnel, and one-stop automatic production from bearing raw materials to finished products. We are willing to provide excellent services for factories that produce industrial equipment, vehicles, electromechanical tools, home appliances, instrumentation, fitness equipment, leisure sports equipment, users of various types of mechanical equipment and civil machinery, and domestic and foreign traders and distributors.

Company Advantages

1. FREE SAMPLES: contact us by email or trade manager, and we will send the free samples according to your request.
2. World-Class Bearing: We provide our customers with all types of bearings of world-class quality.
3. OEM or Non-Stand Bearings: Any requirement for Non-standard bearings is Easily Fulfilled by us due to our vast knowledge and links in the industry.
4. Genuine products With Excellent Quality: Company has always proved the 100% quality products it provides with genuine intent.
5. After-Sales Service and Technical Assistance: Company provides after-sales service and technical assistance as per the customer’s requirements and needs.
6. Quick Delivery: The company provides just-in-time delivery with its streamlined supply chain.
7. Cost Saving: We provide long-life, shock-resistant, and high-reliability bearings with excellent quality and better performance. Resulting in increased cost savings.
8. Attending customer queries promptly: We believe that if customers are satisfied then it proves our worth well. Customers are always given quick support. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Contact Angle: 15°
Aligning: Non-Aligning Bearing
Separated: Unseparated
US$ 0/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

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:

  1. Gather the necessary tools and equipment for the bearing replacement, including appropriate wrenches, bearing pullers, and lubricants.
  2. Ensure the equipment is turned off and all power sources are disconnected.
  3. Follow any safety procedures and wear appropriate personal protective equipment (PPE) as required.

2. Bearing removal:

  1. Identify the location of the shielded bearing that needs to be replaced.
  2. If applicable, remove any external components, such as covers or seals, that may be covering the bearing.
  3. Use the appropriate tools, such as a bearing puller or press, to carefully remove the damaged or worn shielded bearing from its housing. Apply force evenly and avoid causing any damage to the surrounding components.
  4. Inspect the housing and shaft for any signs of damage or wear. Clean the area and remove any debris or contaminants.

3. Bearing installation:

  1. Prepare the new shielded bearing by ensuring it matches the specifications and size of the old bearing.
  2. If necessary, apply a thin layer of lubricant to the bearing’s inner and outer races to facilitate smooth installation.
  3. Position the new shielded bearing into the housing or onto the shaft, aligning it properly.
  4. Apply appropriate force using a press or suitable installation tool to ensure the bearing is fully seated in its designated position. Take care not to apply excessive force, as it can damage the bearing or its surrounding components.
  5. If applicable, reinstall any external components, such as covers or seals, that were removed during the bearing removal process.

4. Post-installation steps:

  1. Clean the area around the newly installed shielded bearing to remove any lubricant or debris.
  2. If necessary, apply the recommended lubricant to the bearing according to the manufacturer’s guidelines.
  3. Perform a visual inspection to ensure the bearing is properly seated, aligned, and secured.
  4. If the equipment has multiple bearings, repeat the above steps for each bearing that needs to be replaced.

5. Testing and verification:

  1. Once the shielded bearing replacement is complete, reassemble any remaining components and ensure they are properly secured.
  2. Turn on the equipment and perform functional tests to verify the proper operation of the bearing replacement.
  3. Monitor the equipment during operation and check for any abnormal noises, vibrations, or temperature changes that may indicate issues with the bearing replacement.
  4. If any problems are detected, stop the equipment and inspect the bearing installation to identify and address the underlying cause.

It’s important to note that the above steps provide a general guideline for replacing shielded bearings. The specific procedure may vary depending on the equipment, bearing type, and manufacturer’s recommendations. Always refer to the equipment and bearing manufacturer’s instructions for detailed guidance and follow proper maintenance and safety protocols throughout the bearing replacement process.

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

What are the advantages of using shielded bearings?

Shielded bearings offer several advantages over other types of bearings. Here’s a detailed explanation of the advantages of using shielded bearings:

  • Contamination Protection: One of the main advantages of shielded bearings is their ability to provide protection against contamination. The shields act as a physical barrier, preventing dust, dirt, moisture, and other contaminants from entering the bearing. This helps maintain the cleanliness of the internal components, reducing the risk of premature wear, damage, or failure.
  • Lubrication Retention: Shielded bearings also help retain lubrication within the bearing. The shields help to contain the lubricant and prevent it from escaping or being contaminated by external factors. This ensures that the rolling elements and raceways are adequately lubricated, reducing friction and wear, and promoting smoother operation and extended bearing life.
  • Simplicity and Cost-Effectiveness: Shielded bearings are relatively simple in design, consisting of an outer shield and an inner ring with rolling elements. This simplicity makes them easy to install and maintain. Additionally, shielded bearings tend to be more cost-effective compared to other bearing types, making them suitable for a wide range of applications.
  • Space-Saving: Shielded bearings have a compact design and do not require additional sealing components. This makes them space-saving and allows for more efficient use of available space in various applications and systems.
  • Speed and Temperature Capability: Shielded bearings are capable of operating at high speeds and handling moderate temperature variations. They are designed to provide stable performance and low friction even under demanding operating conditions.
  • Versatility: Shielded bearings are available in a variety of sizes, configurations, and materials to suit different application requirements. They can be used in a wide range of industries and systems, including automotive, industrial machinery, appliances, and more.
  • Easy Replacement: In the event of bearing failure or maintenance requirements, shielded bearings are relatively easy to replace. The shields can be removed to access the internal components for inspection, lubrication, or replacement, simplifying the maintenance process.

It’s important to note that while shielded bearings offer advantages in terms of contamination protection and lubrication retention, they may not provide the same level of sealing effectiveness as sealed bearings or other specialized bearing types. The choice of bearing type should be based on the specific requirements and operating conditions of the application.

By leveraging the advantages of shielded bearings, you can enhance the performance, reliability, and service life of rotating equipment and systems.

China Standard Double Shielded Deep Groove Ball Bearing 6203zznr 6203nr 6303zz Nr CZPT Ball Bearing with Snap Ring   with Hot sellingChina Standard Double Shielded Deep Groove Ball Bearing 6203zznr 6203nr 6303zz Nr CZPT Ball Bearing with Snap Ring   with Hot selling
editor by CX 2024-03-23

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