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| Bore (d) | 25 mm |
|---|---|
|
Outer (D) |
37 mm |
| Width (B) | 7 mm |
| Weight (g) | 22 g |
| Dynamic(C) | 300 kgf |
| Static(Co) | 234 kgf |
1.E-Bike Bearings - Introduction to 6805 Bearings
2.Where will we see the 6805 bearings
An Overview
The 6805 thin section bearing is a common bearing model widely used in industries such as bicycles, low-noise electric motors, automobiles, motorcycles, and general machinery. It is the most widely used type of bearing in the mechanical industry. In this article, we will delve into the dimensions of the 6805 bearings.
| Bore (d) | 25 mm |
|---|---|
|
Outer (D) |
37 mm |
| Width (B) | 7 mm |
| Weight (g) | 22 g |
| Dynamic(C) | 300 kgf |
| Static(Co) | 234 kgf |
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Inner diameter of the 6805 bearings
The inner diameter of the 6805 bearing is 25 millimeters. It can accommodate shafts with a diameter of 25 millimeters.
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Outer diameter of the 6805 bearings
The outer diameter of the 6805 bearing is 37 millimeters. This refers to the diameter of the outer ring of the bearing. Make sure that your application space can accommodate the outer diameter of the 6805 bearing.
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Width diameter of the 6805 bearings
The width of the 6805 bearing is 7 millimeters. This refers to the distance between the inner and outer rings of the bearing. Ensure that this dimension is suitable for your application to ensure proper installation and operation.
6805 Detailed Dimension Information 
The 6805 bearing is a common and widely used bearing model. Understanding its inner diameter, outer diameter, and width dimensions is crucial for selecting the appropriate bearing. Based on your application requirements, load, speed, temperature, and quality criteria, choose the suitable size of the 6805 bearing for your application to ensure good performance and reliability.
The 6805 bearing is typically composed of an inner ring, an outer ring, ball bearings, and a cage (also known as a retainer). The groove on the raceway is slightly larger than the radius of the steel balls. As the balls and raceway make point contact, the bearing can withstand both bi-directional axial loads and radial loads. It is commonly used in pairs under normal circumstances to reduce the internal axial forces caused by the load and to handle radial loads.
The sealing covers for the 6805 bearing mainly come in three types: ZZ, 2RS, and OPEN.
The 6805 OPEN type bearing cover is a design without a cover, allowing the internal components of the bearing to be exposed to the external environment. This design makes the bearing more susceptible to contamination from dirt, dust, and other external particles. Therefore, the 6805 OPEN type bearing is more suitable for applications in clean environments or where regular cleaning is required.
6805 ZZ refers to the 6805 bearing with metal shields as the outer cover. The metal shields effectively block dust, contaminants, and other external particles from entering while retaining the lubricant within the bearing.
6805 2RS refers to the 6805 bearing with rubber seals as the outer cover. The rubber seals provide enhanced protection by effectively blocking moisture, dust, and other contaminants from entering. This sealing method is commonly used in harsh environments and applications that require stricter protection.
When choosing the appropriate bearing outer cover mode for your needs, consider the following factors
Application environment: Determine the potential sources of contamination and other external particles in your application environment. Based on the environmental conditions, choose between open type, metal shields, or rubber seals to provide the appropriate protection.
Precision and speed requirements: Consider the precision and speed requirements of your application. Open type bearings are typically suitable for low precision and lower speed applications, while metal shields and rubber seals offer higher protection and are suitable for medium and high precision requirements.
Maintenance requirements: Consider your maintenance needs for the bearings. Open type bearings require regular cleaning and lubrication, while metal shields and rubber seals can reduce maintenance requirements.
It is widely used in components such as engines, transmissions, wheel hubs, and electric motors. The bearings are designed to withstand high-speed rotation and loads, providing smooth operation and durability, thus ensuring the reliability and performance of automobiles.
The 6805 bearing is commonly used in electric bicycles. Electric bicycles rely on electric motors to provide pedal assistance, making cycling easier and more efficient. The 6805 bearing is applied to various parts of electric bicycles, such as the bottom bracket, hub, motor components, and frame. Its low friction and durability contribute to enhancing the overall performance and efficiency of electric bicycles.
The 6805 bearing is a key component widely used in multiple industries. From the automotive industry to the bicycle sector, this bearing plays an indispensable role in many critical equipment. Its high-speed operation, durability, and reliability make it the preferred choice in these industries.
Further reading:
E-Bike Bearings | 6906 Bearing Dimensions
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