Understanding 6307 2Z C3: Properties and Specifications
What is 6307 2Z C3?
6307 2Z C3 is a type of ball bearing widely used in various industrial applications. The designation ‘6307’ refers to its size and series. ‘2Z’ indicates it has metal shields on both sides. ‘C3’ denotes increased internal clearance.

These bearings are designed for high-speed operations and can handle both radial and axial loads. They’re known for their durability and ability to operate in demanding conditions. The metal shields protect the bearing from contaminants, extending its lifespan.
6307 2Z C3 bearings are popular due to their versatility and reliability. They’re found in many types of machinery, from electric motors to conveyor systems. Their design allows for smooth rotation and minimal friction, making them ideal for applications requiring precision and efficiency.
Key Specifications of 6307 2Z C3 Ball Bearings
The 6307 2Z C3 ball bearings have specific technical specifications that make them suitable for various applications. Here are some key specs:
- Inner Diameter: 35 mm
- Outer Diameter: 80 mm
- Width: 21 mm
- Dynamic Load Rating: 35,100 N
- Static Load Rating: 19,000 N
- Maximum Speed: 11,000 rpm
- Weight: Approximately 0.460 kg
The C3 clearance allows for better performance in high-temperature environments. The 2Z shields provide protection against dust and other contaminants. These bearings are typically made of chrome steel, offering excellent hardness and wear resistance.
Understanding these specifications is crucial when selecting bearings for specific applications. They determine the bearing’s load capacity, speed limits, and suitability for different operating conditions.
Industrial Applications of 6307 2Z C3 Ball Bearings
Common Uses in Various Industries
6307 2Z C3 ball bearings find applications across numerous industries due to their versatility and reliability. Here’s a list of common uses:

- Electric Motors: Used in various types of electric motors, providing smooth rotation and handling both radial and axial loads.
- Pumps: Found in centrifugal pumps, supporting the shaft and managing the loads generated during operation.
- Gearboxes: Used in industrial gearboxes to support shafts and manage the forces involved in power transmission.
- Conveyors: Employed in conveyor systems, particularly in rollers and pulleys, ensuring smooth material transport.
- HVAC Systems: Used in fan motors and compressors in heating, ventilation, and air conditioning systems.
- Agricultural Machinery: Found in various farm equipment, from tractors to harvesting machines.
- Machine Tools: Used in lathes, milling machines, and other precision tools, providing accurate and smooth operation.
These bearings are valued for their ability to handle high speeds and moderate loads, making them suitable for a wide range of applications.
Advantages in Machinery and Equipment
6307 2Z C3 ball bearings offer several advantages in machinery and equipment applications. Their design and specifications contribute to improved performance and reliability.
Firstly, the C3 clearance allows for better performance in high-temperature environments. This makes them ideal for use in motors and other equipment that generate heat during operation. The increased clearance helps prevent binding due to thermal expansion.
The 2Z metal shields on both sides protect the bearing from contaminants. This feature extends the bearing’s lifespan, especially in dusty or dirty environments. It also helps retain lubricant, reducing maintenance requirements.
These bearings can handle both radial and axial loads, making them versatile in various applications. Their ability to operate at high speeds (up to 11,000 rpm) makes them suitable for fast-rotating machinery.
The precision manufacturing of 6307 2Z C3 bearings ensures smooth operation and reduced vibration. This leads to quieter machinery and less wear on related components. Their durability and reliability contribute to reduced downtime and maintenance costs.
Selecting the Right 6307 2Z C3 for Your Needs
How to Choose the Correct Size and Type
Selecting the right 6307 2Z C3 bearing is crucial for optimal performance and longevity of your machinery. Here are some steps to guide you:

- Assess the application: Consider the type of machinery, operating conditions, and load requirements.
- Check the shaft size: Ensure the bearing’s inner diameter matches your shaft size (35 mm for 6307 2Z C3).
- Evaluate the space: Make sure the outer diameter (80 mm) and width (21 mm) fit your housing.
- Consider the load: Compare the dynamic and static load ratings with your application’s requirements.
- Assess speed needs: Ensure the maximum speed (11,000 rpm) meets or exceeds your application’s needs.
- Review environmental factors: Consider temperature, contamination levels, and lubrication requirements.
- Check for any special requirements: Some applications may need specific materials or coatings.
Always consult the manufacturer’s guidelines and specifications when selecting bearings. If in doubt, seek advice from a bearing specialist or engineer.
Tips for Procurement and Handling
Proper procurement and handling of 6307 2Z C3 ball bearings are essential for ensuring their performance and longevity. Here are some tips:
- Buy from reputable suppliers: This ensures you get genuine, high-quality bearings.
- Check for proper packaging: Bearings should come in sealed packages to prevent contamination.
- Verify specifications: Always double-check that the received bearings match the ordered specifications.
- Handle with care: Use clean, dry hands or gloves when handling bearings.
- Store properly: Keep bearings in their original packaging until ready for use. Store in a clean, dry environment.
- Avoid impact: Don’t drop or knock bearings, as this can cause damage.
- Use proper installation tools: Employ the correct tools and techniques for bearing installation.
- Follow lubrication guidelines: Use the recommended type and amount of lubricant.
- Regular inspection: Once installed, regularly check bearings for signs of wear or damage.
- Keep records: Maintain documentation of bearing procurement, installation, and maintenance.
By following these guidelines, you can ensure the best performance and longest life for your 6307 2Z C3 ball bearings.







