You know that Bearings ensure smooth operation, reduce friction, and extend the life of components. One such bearing that stands out is the 6906 bearing. It is designed with a slim profile, able to handle high load capacity, and it also offers reliable performance in various industries.
This guide dives you deep into everything you need to know about 6906 bearings, from their specific dimensions and components to the types available and their practical applications. So, if you’re in need of a durable or compact design, then 6906 bearing is an ideal choice for a wide range of mechanical uses, and you are at the right place!
Information About 6906 bearing
| Part Number | 6906 | Cage Material | Nylon |
| System of Measurement | Metric | Radial LoDynamic Radial Load ad | 1470 lbf |
| Bearing Type | Ball | Static Radial Load | 1080 lbf |
| For Load Direction | Radial | Max Speed (X1000 rpm) | 13 |
| Construction | Single Row | Lubrication | Required |
| Inner Ring Type | Standard | Shaft Mount Type | Press Fit |
| Seal Type | Open | Temperature Range | -30° to 110 °C |
| Bore Dia | 30 mm | ABEC Rating | ABEC3(Available in ABEC3/5/7) |
| Bore Dia Tolerance | -0.002mm to 0 | Radial Clearance Trade No. | C3 （Available in C1/2/4/5/6) |
| Outer Dia | 47mm | Radial Clearance | 0.002mm to 0.013mm |
| Outer Dia Tolerance | -0.002mm to 0 | RoHS | Compliant |
| Width | 9 mm | REACH | Compliant |
| Width Tolerance | -0.01mm to 0 | Weight | 48 g |
| Bearing material | Chrome Steel SAE-52100 | Lubrication | Chevron SRI-2 Grease |
| Sealed type | Open,Shield,Rubber |
6906 Bearing Dimensions
The 6906 bearing is classified as an open-type thin section deep groove radial ball bearing, with a standard radial internal clearance. Its dimensions are 30x47x9mm, which makes it ideal for applications where space constraints are a concern, while still providing excellent load-carrying capabilities.
The 6906 bearing is part of the thin-section deep groove radial ball bearing family. Here are the essential dimensions that define it:
- The inner diameter of the 6906 bearing is 30mm and can accommodate a shaft with a diameter of 8 mm. When you select 6906 bearings, make sure to confirm the size of the shaft.
- The outer diameter of 6906 bearing is 47mm. This refers to the diameter size of the outer ring of the 6906 bearing. When you choose the 6906 bearing, make sure the application space can accommodate the outer ring size.
- The width of the 6906 bearing is 9mm. Width refers to the distance between the inner and outer rings of the bearing. Ensure the bearing width is sized appropriately for your application for proper installation and operation.
Components of 6906 Bearings
As mentioned before, bearings are composed of four parts, namely the inner ring, outer ring, rolling elements and retainer. 6906 bearings are no exception. The inner and outer rings are usually made of high-quality bearing steel, while the balls are made of steel materials. The cage, usually made of a material such as nylon or steel, evenly spaced the balls within the bearing and reduced friction.
- Inner and Outer Rings:
These rings form the raceway for the bearing’s rolling elements. The inner ring fits onto the rotating shaft, while the outer ring is secured in the housing, both of which are engineered to precise tolerances. - Ball Bearings:
The rolling elements of the 6906 bearing are steel balls. These balls are housed between the inner and outer rings, reducing friction and allowing smooth, efficient rotational movement. - Cage:
The cage ensures that the steel balls are evenly spaced within the bearing, preventing contact between them and reducing wear over time. - Lubrication:
The bearing often comes pre-lubricated, though its open design also allows for periodic re-lubrication to extend its lifespan and enhance performance.
3 Types of 6906 Bearings
The 6906 bearing comes in several variants, each designed to handle different operating environments and conditions:
- 6906 Open Type:
This version features no seals or shields, allowing for easy maintenance and re-lubrication. It’s best suited for applications in cleaner environments where dust and moisture exposure is minimal. - 6906ZZ (Metal Shielded):
The ZZ type has metal shields on both sides, protecting the internal components from contaminants like dust and debris. It’s ideal for indoor machinery or applications with moderate exposure to external elements. - 6906-2RS (Rubber Sealed):
The 2RS version is sealed with rubber on both sides, offering superior protection against water, dirt, and other contaminants. This makes it suitable for harsher environments where contamination could affect performance.
Let us dig deep in these types and provide you with strong technical support in choosing the right bearing.
Bearing seals are typically made of nitrile rubber. High temperature applications commonly use silicone or fluorine rubbers.
Silicone rubber: MQ/PMQ/VMQ/PVMP
Temperature range: -70 to 200 degrees Celsius
Hardness: 25 to 80
Characteristics: High temperature and cold resistance, good wear resistance, and aging resistance to sunlight and ozone.
Limitations: Poor surface wear and crack resistance.
Hydrogenated (nitrile rubber): HNBR/NEM
Temperature range: -35~165 degrees Celsius
Hardness: 50~90;
Features: Heat resistance, high ductility, chemical and corrosion resistance
Limitations: Not suitable for ultra-low temperature conditions, avoid sunlight Direct sunlight and chemical attack.
Fluorine rubber: FKM/FPM
Temperature range: -28~200 degrees Celsius
Hardness: 50~95
Properties: high temperature resistance, chemical corrosion resistance, corrosion resistance to petroleum products
Limitations: cannot be used at low temperatures.
Polypropylene rubber: ACM Rubber
Temperature range: -18~175 degrees Celsius
Hardness: 40~90.
Features: strong resistance to hot oil, sunlight and ozone erosion and strong crack resistance.
Limitations: It has poor waterproof performance and is not suitable for ultra-low temperature working conditions.
What Is the Difference Between 6906 Zz and 6906 2rs?
6906-2RS and 6906-ZZ are ball bearings with a diameter of 30 mm that are used in many applications. The 6906-2RS ball bearing has two contact rubber seals, one on each side of the ball bearing. 6906-ZZ ball bearings have two non-contact metal shields on each side.
If your application requires a 6906 ball bearing with only one seal or shield you can get one of the shields or seals off of this ball bearing. As a high quality ball bearing, this 30mm inch bearing can handle electric motor demands.
As indicated by the suffix letters, the 6906 bearing has the following seal and dust cover configurations:
- ZZ type: It refers to radial ball bearings with metal dust covers.
- Shield/Protected: Generally, ZZ bearings have a steel or other metal shield on both sides. In addition to protecting the bearing interior from dust, these shields also block some light contaminants from entering.
- Lubrication: Guards prevent the lubricant inside the bearing from escaping, minimizing contamination risks.
What Is a Deep Groove Ball 6906 Bearing?
The most widely used type of bearings are deep groove ball bearings, which have four parts: balls, an outer ring, an inner ring, and a cage. Rolling balls are inserted between the bearing’s inner and outer rings to sustain axial and radial loads while reducing rotational friction.
Deep groove ball bearings with deep arcuate grooves on both the inner and outer rings can receive radial load, axial load in both directions, or combined load that is a combination thereof. They are Ideal for high-speed rotation.
The deep groove ball bearing 6906 is narrow and can also be used with limited space. Here are a few features that a 6906 deep groove ball bearing poses:
Features
- Thin section bearing with a thin cross section.
- Suitable for space-saving installation in radial and axial directions.
- Extra light series with compact dimensions and low weight.
- Suitable for radial loads and light axial loads in both directions.
- Offers high running accuracy and quiet running.
- Contact lip seal on both sides made of rubber (2RS) for high sealing effect.
Characteristics of 6906 Bearings
The 6906 bearing is widely used in various occasions, such as power tools, electric vehicles, and electric skateboards. vehicles, wind turbines, fans, machine tools and water pumps, etc. They have low friction and are optimized for low noise and vibration, allowing for high rotational speeds.
However, 6906 bearings offer several features that make it a top choice for engineers and designers. These include:
- High Load Capacity:
It can handle significant radial and axial loads, making it a perfect choice for machinery that requires strong support. - Low Friction:
The precision-machined components and deep groove design minimize friction, ensuring efficient rotational movement. - Compact and Lightweight:
Despite its ability to handle large loads, the 6906 maintains a slim profile, so that it can fit into tight spaces. - Durable and Reliable:
Built from high-quality materials, this bearing is designed to withstand tough conditions and ensure long-term performance. - Small Size:
If we talk about the size then it poses a miniature design so that it can be handy but don’t go on the size, it can handle a lot of loads.
- Easy Installation:
The compact size and lightweight design shows how much this bearing is easy to install.
Typical Applications of 6906 Bearings
6906 bearings are often used in a wide range of industries and applications due to their miniature size, load capacity, and versatility, here are a few of the industries where it is applicable:
- Automotive Industry:
The 6906 bearing is used in various automotive components, such as alternators, where it provides reliable rotational support under high loads.
- Electric Motors:
It is frequently used in electric motors, offering smooth operation and reducing wear and tear on the motor’s moving parts.
- Heavy Machinery
The bearing’s ability to handle both radial and axial loads makes it an excellent choice for industrial equipment that experiences continuous operation.
- Bicycle
6906 bearings provide smooth movement, support for high-end bicycles, and smooth rear swing arm action due to which one can enjoy a comfortable ride.
- Conveyor system
In material handling and conveying systems, 6906 bearings are used to support rotating components such as rollers and pulleys, ensuring smooth and efficient movement of goods in factories, warehouses and distribution centers.
Conclusion
The 6906 bearing is an important component across a variety of industries, known for its ability to handle both radial and axial loads efficiently while maintaining a compact design. So, if you are looking for a 6906 bearing for your industry, then we hope this guide helped you!
Make sure to choose the right type of 6906 bearing—whether open, ZZ, or 2RS— because it ensures long-lasting performance and reduced maintenance, making it a profitable investment in your equipment’s efficiency.
So, If you are ready to upgrade your machinery with high-quality 6906 bearings, Contact BYWB bearings today to explore our wide range of products and experience unmatched durability and precision.
