China Professional CZPT Miniature Deep Groove Ball Bearing 608 Zz bearing example

Product Description

EZO Miniature Deep Groove Ball Bearing 608 ZZ

1. Instruction of Deep Groove Ball Bearings:
Deep groove ball bearings are the most common type of rolling bearings. Their use is very widespread. The raceway grooves on both the inner and outer rings have circular arcs of slightly larger radius than that of the balls. In addition to radial loads, axial loads can be imposed in either direction. Because of their low torque, they are highly suitable for applications where high speeds and low power loss are required.  
In addition to open type bearings, these bearings often have steel shields or rubber seals installed on 1 or both sides and are prelubricated with grease. Also, snap rings are sometimes used on the periphery. As to cages, pressed steel ones are the most common.
 
2. Features of Deep Groove Ball Bearings:
Shield / closure: Open ball bearing, Z, ZZ, RS, 2RS, 2RZ
 
Ball bearings snap ring: N, NR
 
Tolerance: ABEC-1, ABEC-3, ABEC-5, ABEC-7
 
Vibration level: V4, V3, V2, V1
 
Radial play: C0, C2, C3, C4
 
Material: GCR15
 
3. Versions of Deep Groove Ball Bearings:
With 1 or 2 side rubber seal RS, 2RS
 
With 1 or 2 side metal shields Z and ZZ (2Z)
 
With a snap ring groove in outer ring N
 
With a snap ring groove in outer ring and external snap ring NR

4. More Picture of EZO Miniature Deep Groove Ball Bearings:

5. More Part Number of Deep Groove Ball Bearing 6200 Series:

 

Boundary dimensions(mm) Basic load ratings(kN) Limiting speeds(rpm) Mass(Kg) Bearing Number
d D B rs min Cr Cor Grease (Approx.) TML
20 47 14 1 12.8 6.65 16,000 0.106 6204-2RS
20 47 14 1 12.8 6.65 16,000 0.106 6204-2RSC3
20 47 14 1 12.8 6.65 18,000 0.106 6204-RS
20 47 14 1 12.8 6.65 18,000 0.106 6204-RSC3
25 52 15 1 14 7.85 13,000 0.128 6205-2RS
25 52 15 1 14 7.85 13,000 0.128 6205-2RSC3
25 52 15 1 14 7.85 15,000 0.128 6205-RS
25 52 15 1 14 7.85 15,000 0.128 6205-RSC3
30 62 16 1 19.5 11.3 11,000 0.199 6206-2RS
30 62 16 1 19.5 11.3 11,000 0.199 6206-2RSC3
30 62 16 1 19.5 11.3 13,000 0.199 6206-RS
30 62 16 1 19.5 11.3 13,000 0.199 6206-RSC3
35 72 17 1.1 25.7 15.3 9,800 0.288 6207-2RS
35 72 17 1.1 25.7 15.3 9,800 0.288 6207-2RSC3
35 72 17 1.1 25.7 15.3 11,000 0.288 6207-RS
35 72 17 1.1 25.7 15.3 11,000 0.288 6207-RSC3
40 80 18 1.1 29.1 17.8 8,700 0.366 6208-2RS
40 80 18 1.1 29.1 17.8 8,700 0.366 6208-2RSC3
40 80 18 1.1 29.1 17.8 10,000 0.366 6208-RS
40 80 18 1.1 29.1 17.8 10,000 0.366 6208-RSC3

6. Our Workshop:

7. About US

We are the bearing manufacture local in HangZhou City, we are the leading bearing factory in China, and we have 15 years export experience. And our produce equipment are import from Germany, so that our bearings quality level has reached in Europe quality. Our own brand is :  ”  DEMEK ” , also we are usually to help our clients to do the OEM service and customized non-standard bearings. Welcome to send us the inquiry.

8. Our Contact Details:

 
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OEM Service: Provide
Sealed Tyoe: Zz, 2RS, Open Type
Hardness: 59 ~ 62 HRC
Delivey Time: in Stock
Inner Diameter: 8 mm
Outer Diameter: 22 mm
Samples:
US$ 1/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

ball bearing

What are the Challenges Associated with Noise Reduction in Ball Bearings?

Noise reduction in ball bearings is a crucial consideration, especially in applications where noise levels must be minimized for operational efficiency and user comfort. While ball bearings are designed to operate smoothly, there are several challenges associated with reducing noise in their operation:

  • Vibration:

Vibration generated by the movement of rolling elements and raceways can lead to noise. Even minor irregularities in bearing components or the mounting system can cause vibration that translates into audible noise.

  • Bearing Type and Design:

The type and design of the ball bearing can impact noise generation. For example, deep groove ball bearings are known for their quiet operation, while angular contact bearings can generate more noise due to their higher contact angles.

  • Lubrication:

Improper or inadequate lubrication can result in increased friction and wear, leading to noise. Choosing the right lubricant and maintaining proper lubrication levels are essential for reducing noise in ball bearings.

  • Bearing Clearance and Preload:

Incorrect clearance or preload settings can lead to noise issues. Excessive clearance or inadequate preload can cause the rolling elements to impact the raceways, resulting in noise during rotation.

  • Material and Manufacturing Quality:

The quality of materials and manufacturing processes can affect noise levels. Inconsistent or low-quality materials, improper heat treatment, or manufacturing defects can lead to noise generation during operation.

  • Surface Finish:

The surface finish of the rolling elements and raceways can impact noise. Rough surfaces can generate more noise due to increased friction and potential irregularities.

  • Sealing and Shielding:

Seals and shields that protect bearings can influence noise levels. While they are necessary for contamination prevention, they can also cause additional friction and generate noise.

  • Operating Conditions:

External factors such as temperature, speed, and load can influence noise levels. High speeds or heavy loads can amplify noise due to increased stress on the bearing components.

  • Wear and Deterioration:

As ball bearings wear over time, noise levels can increase. Worn components or inadequate lubrication can lead to more significant noise issues as the bearing operates.

To address these challenges and reduce noise in ball bearings, manufacturers and engineers employ various techniques, such as optimizing design, selecting suitable bearing types, using proper lubrication, maintaining accurate preload settings, and ensuring high-quality materials and manufacturing processes. Noise reduction efforts are essential to improve overall product quality, meet noise regulations, and enhance user experience in various applications.

ball bearing

How do Temperature and Environmental Conditions Affect the Performance of Ball Bearings?

Temperature and environmental conditions have a significant impact on the performance and longevity of ball bearings. The operating environment can influence factors such as lubrication effectiveness, material properties, and overall bearing behavior. Here’s how temperature and environmental conditions affect ball bearing performance:

  • Lubrication:

Temperature variations can affect the viscosity and flow characteristics of lubricants. Extreme temperatures can cause lubricants to become too thin or too thick, leading to inadequate lubrication and increased friction. In high-temperature environments, lubricants can degrade, reducing their effectiveness.

  • Material Properties:

Temperature changes can alter the material properties of the bearing components. High temperatures can lead to thermal expansion, affecting bearing clearances and potentially causing interference between components. Extreme cold temperatures can make materials more brittle and prone to fracture.

  • Clearance Changes:

Temperature fluctuations can cause changes in the internal clearance of ball bearings. For instance, at high temperatures, materials expand, leading to increased clearance. This can affect bearing performance, load distribution, and overall stability.

  • Corrosion and Contamination:

Harsh environmental conditions, such as exposure to moisture, chemicals, or abrasive particles, can lead to corrosion and contamination of bearing components. Corrosion weakens the material, while contamination accelerates wear and reduces bearing life.

  • Thermal Stress:

Rapid temperature changes can result in thermal stress within the bearing components. Differential expansion and contraction between the inner and outer rings can lead to stress and distortion, affecting precision and bearing integrity.

  • Noise and Vibration:

Temperature-related changes in material properties and internal clearances can influence noise and vibration levels. Extreme temperatures can lead to increased noise generation and vibration, affecting the overall operation of machinery.

  • Lubricant Degradation:

Environmental factors like humidity, dust, and contaminants can lead to premature lubricant degradation. Oxidation, moisture absorption, and the presence of foreign particles can compromise the lubricant’s performance and contribute to increased friction and wear.

  • Seal Effectiveness:

Seals and shields that protect bearings from contaminants can be affected by temperature fluctuations. Extreme temperatures can lead to seal hardening, cracking, or deformation, compromising their effectiveness in preventing contamination.

  • Choosing Appropriate Bearings:

When selecting ball bearings for specific applications, engineers must consider the expected temperature and environmental conditions. High-temperature bearings, bearings with specialized coatings, and those with enhanced sealing mechanisms may be necessary to ensure reliable performance.

Overall, understanding the impact of temperature and environmental conditions on ball bearing performance is crucial for proper bearing selection, maintenance, and ensuring optimal operation in diverse industries and applications.

ball bearing

How do Ball Bearings Differ from Other Types of Bearings like Roller Bearings?

Ball bearings and roller bearings are two common types of rolling-element bearings, each with distinct designs and characteristics. Here’s a comparison of ball bearings and roller bearings:

  • Design:

Ball Bearings: Ball bearings use spherical balls to separate and reduce friction between the bearing’s inner and outer rings. The balls enable rolling motion and smooth contact, minimizing friction.

Roller Bearings: Roller bearings, as the name suggests, use cylindrical or tapered rollers instead of balls. These rollers have larger contact areas, distributing loads over a broader surface.

  • Friction and Efficiency:

Ball Bearings: Due to the point contact between the balls and the rings, ball bearings have lower friction and are more efficient at high speeds.

Roller Bearings: Roller bearings have a larger contact area, resulting in slightly higher friction compared to ball bearings. They are more suitable for heavy-load applications where efficiency is prioritized over high speeds.

  • Load Capacity:

Ball Bearings: Ball bearings excel at handling light to moderate loads in both radial and axial directions. They are commonly used in applications where smooth rotation and low friction are important.

Roller Bearings: Roller bearings have a higher load-carrying capacity than ball bearings. They can support heavier radial and axial loads and are preferred for applications with significant loads or impact forces.

  • Variability:

Ball Bearings: Ball bearings come in various designs, including deep groove, angular contact, and thrust ball bearings, each suitable for different applications.

Roller Bearings: Roller bearings have diverse types, including cylindrical, spherical, tapered, and needle roller bearings, each optimized for specific load and motion requirements.

  • Speed Capability:

Ball Bearings: The reduced friction in ball bearings makes them suitable for high-speed applications, such as electric motors and precision machinery.

Roller Bearings: Roller bearings can handle higher loads but are generally better suited for moderate to low speeds due to slightly higher friction.

  • Applications:

Ball Bearings: Ball bearings are used in applications where smooth motion, low friction, and moderate loads are essential, such as electric fans, bicycles, and some automotive components.

Roller Bearings: Roller bearings find applications in heavy machinery, construction equipment, automotive transmissions, and conveyor systems, where heavier loads and durability are crucial.

In summary, ball bearings and roller bearings differ in their design, friction characteristics, load capacities, speed capabilities, and applications. The choice between them depends on the specific requirements of the machinery and the type of loads and forces involved.

China Professional CZPT Miniature Deep Groove Ball Bearing 608 Zz   bearing exampleChina Professional CZPT Miniature Deep Groove Ball Bearing 608 Zz   bearing example
editor by CX 2024-03-27