China factory 6808 2RS Thin Wall Shielded 40*52*7 mm ABEC3 Deep Groove Ball Bearing wheel bearing

Product Description

Product Description

6800 series deep groove ball bearings
product-list-1.html

 

Bearing NO (mm)Boundary Dimensions (Kn) (Kn) (r/min)
Limit Rotational Speed
(Kg)
Weight
d D B Dynamic Load Rating
Cr
Static Load Rating
Cor
Grease Lubrication Oil Lubrication
6800 10 19 5 1.72 0.84 34000 40000 0.0053
6801 12 21 5 1.92 1.04 32000 38000 0.0068
6802 15 24 5 2.07 1.26 28000 34000 0.0075
6803 17 26 5 2.63 1.57 26000 30000 0.0083
6804 20 32 7 4.0 2.47 22000 26000 0.02
6805 25 37 7 4.5 3.15 18000 22000 0.571
6806 30 42 7 4.7 3.65 15000 18000 0.026
6807 35 47 7 4.9 4.1 14000 16000 0.571
6808 40 52 7 6.35 5.5 12000 14000 0.033
6809 45 58 7 6.6 6.15 11000 13000 0.041
6810 50 65 7 6.4 6.2 9500 11000 0.054
6811 55 72 9 8.8 8.5 8500 10000 0.081
6812 60 78 10 11.5 10.9 8000 9500 0.101
6813 65 85 10 11.9 12.1 7500 8500 0.12
6814 70 90 10 12.1 12.7 6700 8000 0.13
6815 75 95 10 12.5 13.9 6300 7500 0.14
6816 80 100 13 12.7 14.5 6000 7100 0.15
6817 85 110 13 18.7 20 5600 6700 0.27
6818 90 115 13 19.0 21 5300 6300 0.28
6819 95 120 13 19.3 22 5000 6000 0.29
6820 100 125 13 19.6 23 4800 5600 0.31
Note:Above-mentioned products include its modification series,such as Z,2Z,RS,and 2RS etc.

 

Detailed Photos

 


Black chamfer with rubber seal

Black chamfer with white dust cover

open UG

white chamfer with yellow dust cover

ceramic ball bearing

THE USE OF THE BEARING
Some tips on use
Rolling bearing is a precise part. Therefore it should be used carefully. No matter how high performance the bearing has, it can be obtained by improper use, the followings are the points for attention to use bearings.
(1) Keep clean the bearing and its surrounding areas
It is harmful to the bearing even by tiny dust which can not be seen by human eyes. Therefore it should always keep clean the surrounding environments in order to prevent the bearing from dust corrosion.
(2) Use bearing carefully
Scar and indentation can essily be produced out of strong impact to the bearing in use and become the cause of accidents. Therefore special caution should be given to its use.
(3) Use the appropriate operating tool
Avoid using a hammer or heavy direct tap on a bearing or sleeve, must use appropriate tools such as press or heating.
(4) Be careful to the rust corrosion of the bearings
The sweat in the hands will cause rust in operating the bearings. Therefore your hands should be cleanly washed and dried before operation. You’d better wear gloves in doing the work. 
(5) Handler should familiar with bearing
(6) Establish bearing handling criteri
·Bearing storage
.Bearing and surrounding cleaning
.Dimension of mounting parts and inspection
.Machining quality
.Mounting handing
.After mounting inspection
·Disassembly handing
·Keep maintain
·Adding lubricant

 

Installation Instructions

 Bearing mounting
 Precautions for proper mounting of bearing
1) Bearing preparation
Bearing should not be unpacked until before mounting due to spray anti-corrosion oil and pack anti-corrosion paper. In addition, spray anti-corrosion oil on bearing have good lubricate function. For general purpose, just directly using bearing fill-in grease bearings, without cleaning. However, bearing for instrument or high speed rotating must be cleaned with clean filtered oil in order to remove the anti-corrosion oil. At that time, the bearings are easy to corrosion could not storage long term.
2) Inspection of shafts and housings
Cleaning shaft and housing, confirming no scratched or machine burrs, no CZPT and cutting piece in housing. Secondly comppare with drawing, the shaft and housing of dimension, form and machining quality should be inspected.
chart 1 Measure location for shaft diameter                                                                         chart 2  Measure location for housing bore diameter                       

As chart 1 and chart 2 showing, divided several locations to be measure on shaft and housing bore diameters, It should be careful inspected perpendicular between shaft, housing fillet dimension and shoulder.
Before mounting bearing, it should be sprayed mechanical oil on fitting surface after check out the shaft and housing.

Bearing storage
Before leaving the factory, the bearing is sprayed proper rust-inhibiting oil and packed rust-inhibiting paper. The quality of bearing is guaranteed, if the packing is not broken.
For long-term storage, if the humidity less than 65% and the temperature about 20, it should storage on shelf which is higher 30cm than ground.
In addition, storage occasion should avoid sunshine and contact with cold wall.

Pictures about packaging

 

Company Profile

Our Advantages

1. World-Class Bearing: We provide our customers with all types of indigenous bearing with world-class quality.
2. OEM or Non-Stand Bearings: Any requirement for Nonstandard bearings is Easily Fulfilled by us due to its vast knowledge and links in the industry.
3. Genuine products With Excellent Quality: The company has always proved the 100% quality products it provides with genuine intent.
4. After Sales Service and Technical Assistance: The company provides after-sales service and technical assistance as per the customer’s requirements and needs.
5. Quick Delivery: The company provides just-in-time delivery with its streamlined supply chain. 
SAMPLES
1. Samples quantity: 1-10 PCS are available. 
2. Free samples: It depends on the Model No., material and quantity. Some of the bearings samples need client to
    pay samples charge and shipping cost. 
3. It’s better to start your order with Trade Assurance to get full protection for your samples order. 

CUSTOMIZED
The customized LOGO or drawing is acceptable for us. 

MOQ
1. MOQ: 10 PCS standard bearings. 
2. MOQ: 1000 PCS customized your brand bearings. 

OEM POLICY
1. We can printing your brand (logo, artwork)on the shield or laser engraving your brand on the shield. 
2. We can custom your packaging according to your design
3. All copyright own by clients and we promised don’t disclose any info.

 

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Motor Parts: Motor Bearing
Water Pump Parts: Water Pump Bearing
Air Compressor Parts: Air Compressor Bearing
Samples:
US$ 50/Piece
1 Piece(Min.Order)

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black or white or as required
Customization:
Available

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

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 do shielded bearings handle radial and axial loads?

Shielded bearings are designed to handle both radial and axial loads, although the specific load capacities may vary depending on the bearing design and size. Here’s a detailed explanation of how shielded bearings handle radial and axial loads:

Radial Loads: Radial loads are forces that act perpendicular to the bearing’s axis, causing it to rotate. Shielded bearings can handle radial loads by distributing the load evenly across the rolling elements, races, and the bearing’s internal structure. The rolling elements, typically balls or rollers, transmit the load from the outer race to the inner race. The races are the ring-like structures that contain the rolling elements and guide their movement. The distribution of the load helps prevent localized stress and ensures that the bearing can support the applied radial load without excessive deformation or premature failure.

The load-carrying capacity of a shielded bearing under radial loads depends on various factors, such as the bearing’s size, design, materials, and the number and size of the rolling elements. Manufacturers provide load ratings for shielded bearings, which indicate the maximum radial load that the bearing can sustain under specific operating conditions. It’s crucial to consider these load ratings and ensure that the applied radial load falls within the recommended limits to prevent bearing failure.

Axial Loads: Axial loads are forces that act parallel to the bearing’s axis, causing it to move in the axial direction. Shielded bearings can handle axial loads to some extent, but their capacity to resist axial loads is generally lower compared to their radial load capacity. The ability of a shielded bearing to handle axial loads depends on its design, including the type of rolling elements and the presence of additional features such as cages or thrust washers.

In applications with predominantly axial loads, specialized bearing designs like thrust bearings or angular contact bearings may be more suitable. These bearings are specifically engineered to handle higher axial loads and provide enhanced axial load-carrying capabilities.

It’s important to note that the load-carrying capacities of shielded bearings may also be influenced by factors such as the speed of rotation, operating temperature, lubrication, and the presence of any external forces or moments acting on the bearing. Therefore, it’s crucial to consult the manufacturer’s specifications and guidelines to determine the appropriate bearing type and size for a given load application.

By understanding the load requirements of your application and selecting the appropriate shielded bearing with sufficient load capacity, you can ensure reliable and efficient operation while minimizing the risk of premature failure or damage to the bearing.

shielded bearing

What is a shielded bearing?

A shielded bearing refers to a type of rolling bearing that incorporates shields to protect the internal components from contamination and retain lubrication. Here’s a detailed explanation of what a shielded bearing is:

A shielded bearing is a type of rolling bearing that consists of an inner ring, an outer ring, rolling elements (such as balls or rollers), and shields. The shields are typically made of metal, such as steel or stainless steel, and are designed to cover the rolling elements and the raceways of the bearing.

The primary purpose of the shields is to prevent solid contaminants, such as dust, dirt, or debris, from entering the bearing and causing damage to the internal components. By acting as a physical barrier, the shields reduce the risk of premature wear, corrosion, and failure of the bearing. They also help retain the lubricating grease or oil within the bearing, ensuring proper lubrication and reducing friction and heat generation.

Shielded bearings are commonly used in various applications and industries, including automotive, industrial machinery, appliances, and electric motors. They are suitable for environments where the risk of contamination is moderate and where regular maintenance and relubrication can be performed.

It’s important to note that shielded bearings provide a certain level of protection against solid contaminants but do not provide a complete seal. They are not intended for applications where liquid or heavy contamination is present. For more demanding applications or environments where higher levels of protection are required, sealed bearings or other specialized bearing arrangements may be necessary.

Shielded bearings are often designated with the suffix “Z” or “ZZ” in the bearing model or part number to indicate the presence of shields. For example, a shielded deep groove ball bearing may be labeled as “6204-Z” or “6204-ZZ” to signify that it has shields on one or both sides.

When installing or handling shielded bearings, it’s important to follow proper procedures and precautions to avoid damaging the shields or introducing contaminants. Regular inspection and maintenance, including periodic relubrication, are also essential to ensure the continued effectiveness of the shields and the optimal performance of the bearing.

Overall, shielded bearings offer a practical and cost-effective solution for protecting rolling bearings from solid contamination and maintaining adequate lubrication in various applications. The specific design, materials, and performance characteristics of shielded bearings may vary depending on the manufacturer and the type of bearing.

China factory 6808 2RS Thin Wall Shielded 40*52*7 mm ABEC3 Deep Groove Ball Bearing   wheel bearingChina factory 6808 2RS Thin Wall Shielded 40*52*7 mm ABEC3 Deep Groove Ball Bearing   wheel bearing
editor by CX 2024-03-29

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