China best 6304 ZZ 20*52*15mm P0 P6 P5 P4 P2 ABEC-1 3 5 7 9 Deep Groove Ball Bearing, With Single Row, Shielded On Both Sides, Steel Cage, C0 C2 C3 Clearance, Metric bearing distributors

Product Description

6304 ZZ 20*52*15mm P0 P6 P5 P4 P2 ABEC-1 3 5 7 9 Deep Groove Ball Bearing, With Single Row,
Shield On Both Sides, Steel Cage, C0 C2 C3 Clearance, Metric

Deep groove ball bearings are the most widely used bearing type and are particularly versatile. They
have low friction and are optimized for low noise and low vibration which enables high rotational speeds.
They accommodate radial and axial loads in both directions, are easy to mount, and require less
maintenance than other bearing types.

Product Name  DEEP GROOVE BALL BEARING
Model Number 6304 ZZ
Material Gcr15/ Carbon Steel/ Stainless Steel/ Si3N4/ ZrO2
Cage Steel/Nylon,Brass
Seal Type: Open,  Z, ZZ, RS, 2RS, 2RZ
Grease Great Wall; Shift; Mobile or as requested
Precision P0, P6, P5, P4, P2 or as requested
Vibration Z1V1, Z2V2, Z3V3, Z4V4 or as requested
Clearance  C0,C2,C3 or as requested 

 

Product Number Seal Type Bore Dia (d) Outer Dia (D) Width (B) Dynamic Load Static Load MAX SPEED
Rating Rating (GREASE)
(Cr) (N) (Cor) (N) (X1000 RPM)
6300 Open 10 mm 35mm 11mm 8100 3450 22
6300 2RS Sealed 10 mm 35mm 11mm 8100 3450 22
6300 ZZ Shielded 10 mm 35mm 11mm 8100 3450 22
6301 Open 12 mm 37mm 12mm 9700 4200 20
6301 2RS Sealed 12 mm 37mm 12mm 9700 4200 20
6301 ZZ Shielded 12 mm 37mm 12mm 9700 4200 20
6302 Open 15 mm 42mm 13mm 11400 5450 17
6302 2RS Sealed 15 mm 42mm 13mm 11400 5450 17
6302 ZZ Shielded 15 mm 42mm 13mm 11400 5450 17
6303 Open 17 mm 47mm 14mm 13600 6650 15
6303 2RS Sealed 17 mm 47mm 14mm 13600 6650 15
6303 ZZ Shielded 17 mm 47mm 14mm 13600 6650 15
6304 Open 20 mm 52mm 15mm 15900 7850 14
6304 2RS Sealed 20 mm 52mm 15mm 15900 7850 14
6304 ZZ Shielded 20 mm 52mm 15mm 15900 7850 14
6305 Open 25 mm 62mm 17mm 20600 11300 11
6305 2RS Sealed 25 mm 62mm 17mm 20600 11300 11
6305 ZZ Shielded 25 mm 62mm 17mm 20600 11300 11
6306 Open 30 mm 72mm 19mm 26700 15000 9.6
6306 2RS Sealed 30 mm 72mm 19mm 26700 15000 9.6
6306 ZZ Shielded 30 mm 72mm 19mm 26700 15000 9.6
6307 Open 35 mm 80mm 21mm 33400 19300 8.5
6307 2RS Sealed 35 mm 80mm 21mm 33400 19300 8.5
6307 ZZ Shielded 35 mm 80mm 21mm 33400 19300 8.5
6308 Open 40 mm 90mm 23mm 40700 24000 7.5
6308 2RS Sealed 40 mm 90mm 23mm 40700 24000 7.5
6308 ZZ Shielded 40 mm 90mm 23mm 40700 24000 7.5
6309 Open 45 mm 100mm 25mm 53000 32000 6.7
6309 2RS Sealed 45 mm 100mm 25mm 53000 32000 6.7
6309 ZZ Shielded 45 mm 100mm 25mm 53000 32000 6.7
6310 Open 50 mm 110mm 27mm 62000 38300 6
6310 2RS Sealed 50 mm 110mm 27mm 62000 38300 6
6310 ZZ Shielded 50 mm 110mm 27mm 62000 38300 6
6311 Open 55 mm 120mm 29mm 71600 45000 5.6
6311 2RS Sealed 55 mm 120mm 29mm 71600 45000 4
6311 ZZ Shielded 55 mm 120mm 29mm 71600 45000 5.6
6312 Open 60 mm 130mm 31mm 81900 52200 5.3
6312 2RS Sealed 60 mm 130mm 31mm 81900 52200 3.6
6312 ZZ Shielded 60 mm 130mm 31mm 81900 52200 5.3
6313 Open 65 mm 140mm 33mm 92700 59900 4.8
6313 2RS Sealed 65 mm 140mm 33mm 92700 59900 3.4
6313 ZZ Shielded 65 mm 140mm 33mm 92700 59900 4.8
6314 Open 70 mm 150mm 35mm 104000 68200 4.5
6314 2RS Sealed 70 mm 150mm 35mm 104000 68200 3.2
6314 ZZ Shielded 70 mm 150mm 35mm 104000 68200 4.5
6315 Open 75 mm 160mm 37mm 113000 77200 4.3
6315 2RS Sealed 75 mm 160mm 37mm 113000 77200 2.8
6315 ZZ Shielded 75 mm 160mm 37mm 113000 77200 4.3
6316 Open 80 mm 170mm 39mm 123000 86700 4
6316 2RS Sealed 80 mm 170mm 39mm 123000 86700 2.8
6316 ZZ Shielded 80 mm 170mm 39mm 123000 86700 4
6317 Open 85 mm 180mm 41mm 133000 96800 3.8
6317 2RS Sealed 85 mm 180mm 41mm 133000 96800 2.6
6317 ZZ Shielded 85 mm 180mm 41mm 133000 96800 3.8
6318 Open 90 mm 190mm 43mm 143000 107000 3.6
6318 2RS Sealed 90 mm 190mm 43mm 143000 107000 2.4
6318 ZZ Shielded 90 mm 190mm 43mm 143000 107000 3.6
6319 Open 95 mm 200mm 45mm 153000 119000 3
6319 2RS Sealed 95 mm 200mm 45mm 153000 119000 2.4
6319 ZZ Shielded 95 mm 200mm 45mm 153000 119000 3
6320 Open 100 mm 215mm 47mm 173000 141000 2.8
6320 2RS Sealed 100 mm 215mm 47mm 173000 141000 2.2
6320 ZZ Shielded 100 mm 215mm 47mm 173000 141000 2.8
6321 Open 105 mm 225mm 49mm 184000 153000 2.6
6321 2RS Sealed 105 mm 225mm 49mm 184000 153000 2
6321 ZZ Shielded 105 mm 225mm 49mm 184000 153000 2.6

                                                                        

About Us

HENGLI Machinery Company is a well-established Chinese bearing supplier. We design, manufacture and
wholesale bearings.Our specialized manufacturer of Spherical Roller Bearing Cylindrical Roller Bearing,
XIHU (WEST LAKE) DIS. Rolling Bearing Co., Ltd was established in 1970 and is accredited by the Chinese Ministry of Machine
Building.We invested in 2 additional specialized bearing factories, which allow us to provide our clients with
top of the line products such as Needle Roller Bearings, Spherical Plain Bearings, Rod Ends Bearings, 
Ball Joint Bearings, Tapered Roller Bearings,Cam Follower Bearings, Thrust Bearings, Wheel Hub
Bearings 
and Non-Standard Bearings.

FAQ
Q1 – What is our advantages?

     A    – Manufacturer – Do it only with the Best;

            -Your Choice make different. 

Q2 – Our Products

 A   – Spherical Roller Bearing, Cylindrical Roller Bearing, Needle Roller Bearing, Cam Followers,
        Thrust Bearing

      – Spherical Plain Bearing, Rod End, Ball Joint, Wheel Hub, Tapered Roller Bearing

Q3 – Process of our production

 A – Heat Treatment – Grinding – Parts Inspection – Assembly – Final Inspection – Packing

Q4 – How to customize bearing(non-standard) from your company?

 A -We offer OEM,Customized(Non-standard) service and you need to provide drawing and detailed
     Technical Data.

Q5 –   What should I care before installation?

 A   – Normally, the preservative with which new bearings are coated before leaving the factory does
        not need to be 
removed; it is only necessary to wipe off the outside cylin­drical surface and bore,
        if the grease is not compatible 
with the preservative, it is necessary to wash and carefully dry the
        bearing.

      -Bearings should be installed in a dry, dust-free room away from metal working or other machines
       producing 
swarf and dust.

Q6 – How to stock and maintenance my bearings right? 

 A   – Do not store bearings directly on concrete floors, where water can condense and collect on the
         bearing;

      -Store the bearings on a pallet or shelf, in an area where the bearings will not be subjected to high
       humidity 
or sudden and severe temperature changes that may result in condensation forming;

      -Always put oiled paper or, if not available, plastic sheets between rollers and cup races of tapered
       roller bearings.
                                                        

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Contact Angle: 0
Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Single
Load Direction: Radial Bearing
Material: Bearing Steel
Samples:
US$ 1/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

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Customized Request

shielded bearing

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 lubricant that is specifically recommended by the bearing manufacturer for the intended application and operating conditions. Consider factors such as temperature range, speed, load, and environmental conditions when selecting the lubricant. Common types of lubricants used for shielded bearings include grease and oil.

2. Determine the lubrication interval: The frequency of lubrication depends on the operating conditions and the manufacturer’s recommendations. In some cases, bearings come pre-lubricated and may not require immediate lubrication. However, it’s important to establish a lubrication schedule based on factors such as operating hours, speed, and load to ensure consistent lubrication throughout the bearing’s lifespan.

3. Clean the bearing and surrounding area: Before lubrication, ensure that the bearing and its surrounding area are clean and free from dirt, dust, and contaminants. Use appropriate cleaning methods and tools to remove any debris that could potentially contaminate the lubricant and affect the bearing’s performance.

4. Choose the lubrication method: There are several methods to lubricate shielded bearings, including manual lubrication and automated lubrication systems:

  1. Manual lubrication: For manual lubrication, carefully apply the lubricant to the bearing while ensuring even distribution. Use the manufacturer’s recommended quantity of lubricant and avoid over-lubrication, as it can lead to excess heat generation, increased friction, and premature bearing failure. Pay attention to evenly coat the rolling elements and races with the lubricant.
  2. Automated lubrication systems: In applications with high-speed or hard-to-reach bearings, automated lubrication systems can provide more precise and consistent lubrication. These systems can be programmed to deliver the appropriate amount of lubricant at regular intervals, ensuring optimal lubrication without the need for manual intervention.

5. Monitor and inspect: Regularly monitor the condition of the lubricant and the bearing’s performance. Check for any signs of contamination, degradation, or inadequate lubrication. Implement a routine inspection schedule to detect any potential issues early and take corrective actions as necessary. If the lubricant appears dirty or contaminated, or if the bearing shows signs of abnormal wear or increased friction, it may be necessary to clean and re-lubricate the bearing.

6. Follow manufacturer guidelines: Always refer to the manufacturer’s recommendations and guidelines for lubrication procedures, lubricant types, quantities, and maintenance intervals specific to the shielded bearing model and application. Manufacturers often provide detailed instructions and specifications to ensure proper lubrication and maximize the bearing’s performance and lifespan.

By following these steps and adhering to the manufacturer’s guidelines, you can ensure that the shielded bearings are properly lubricated, promoting smooth operation, reducing friction and wear, and prolonging the bearing’s service life.

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

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 best 6304 ZZ 20*52*15mm P0 P6 P5 P4 P2 ABEC-1 3 5 7 9 Deep Groove Ball Bearing, With Single Row, Shielded On Both Sides, Steel Cage, C0 C2 C3 Clearance, Metric   bearing distributorsChina best 6304 ZZ 20*52*15mm P0 P6 P5 P4 P2 ABEC-1 3 5 7 9 Deep Groove Ball Bearing, With Single Row, Shielded On Both Sides, Steel Cage, C0 C2 C3 Clearance, Metric   bearing distributors
editor by CX 2024-03-23

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