Overview of the 6307 2RSR Bearing
What Is the 6307 2RSR?
The 6307 2RSR is a type of ball bearing widely used in various industrial applications. It’s a sealed bearing,

indicated by the “2RS” in its name. This means it has rubber seals on both sides to keep lubricant in and
contaminants out. The “R” stands for rubber, while “6307” specifies its size and type.
These bearings are known for their durability and low maintenance requirements. They’re designed to operate
smoothly in a wide range of conditions. The 6307 2RSR is part of the 6300 series, which are deep groove ball
bearings. These are versatile and can handle both radial and axial loads.
Key Specifications and Features
The 6307 2RSR bearing has several important specifications:
- Inner diameter: 35 mm
- Outer diameter: 80 mm
- Width: 21 mm
- Dynamic load rating: 27,000 N
- Static load rating: 15,300 N
- Maximum speed: 7,500 rpm
Key features of this bearing include:
- Sealed design for protection against contaminants
- Pre-lubricated for easy installation and reduced maintenance
- Deep groove design for high-speed operation
- Ability to handle both radial and axial loads
- Made from high-quality steel for durability
These features make the 6307 2RSR suitable for a wide range of applications where reliability and low
maintenance are crucial.
Applications of the 6307 2RSR in Various Industries
Common Uses in Machinery and Equipment
The 6307 2RSR bearing finds extensive use in various types of machinery and equipment. Its versatility and

durability make it a popular choice across multiple industries. Here are some common applications:
- Electric motors: The bearing supports motor shafts, ensuring smooth rotation.
- Pumps and compressors: It helps maintain alignment in rotating components.
- Conveyor systems: The bearing is used in rollers and pulleys.
- Agricultural machinery: It’s found in various moving parts of farm equipment.
- HVAC systems: The bearing supports fan shafts in air handling units.
In these applications, the 6307 2RSR’s sealed design is particularly valuable. It prevents contamination in
dusty or wet environments. This extends the bearing’s life and reduces maintenance needs. The bearing’s
ability to handle both radial and axial loads also makes it suitable for diverse mechanical systems.
The Role of 6307 2RSR in Automotive Performance
In the automotive industry, the 6307 2RSR bearing plays a crucial role in enhancing vehicle performance and
reliability. It’s commonly used in:
- Alternators: The bearing supports the rotor shaft.
- Water pumps: It ensures smooth operation of the pump impeller.
- Transmission systems: The bearing is used in various gearbox components.
- Wheel hubs: Some vehicle models use this bearing in wheel assemblies.
The 6307 2RSR’s sealed design is particularly beneficial in automotive applications. It protects against road
dust, water, and other contaminants. This helps maintain the bearing’s performance over time, even in harsh
driving conditions.
The bearing’s ability to handle high speeds is also valuable in automotive use. It can withstand the rapid
rotations typical in engine and transmission components. This contributes to the overall efficiency and
longevity of the vehicle’s mechanical systems.
Alternative Bearing Options and Their Relationship to 6307 2RSR
Comparing the 6307 2RSR with Other Bearings
While the 6307 2RSR is a versatile bearing, there are other options that may be suitable for specific

applications. Let’s compare it with some alternatives:
- 6307 ZZ: This bearing has metal shields instead of rubber seals. It offers less protection against
contaminants but can operate at higher speeds.
- 6307 Open: This bearing has no seals or shields. It’s suitable for applications where external lubrication
is preferred.
- 6307 C3: This has a greater internal clearance, making it ideal for applications with higher temperatures.
- 6207 2RSR: This bearing has a smaller outer diameter (72mm vs 80mm) but the same inner diameter as the 6307
2RSR.
- 6308 2RSR: This is a larger bearing with a 40mm inner diameter and 90mm outer diameter.
Each of these alternatives has its own strengths. The choice depends on specific application requirements such
as load capacity, speed, and operating environment.
Identifying the Best Alternative for Your Industrial Needs
Choosing the right bearing for your industrial needs involves considering several factors:
- Load requirements: Assess both radial and axial loads the bearing will face.
- Speed: Consider the maximum operating speed of your application.
- Environment: Evaluate factors like temperature, humidity, and presence of contaminants.
- Maintenance: Determine if regular lubrication is possible or if a sealed bearing is preferable.
- Space constraints: Check the available space for the bearing in your equipment.
- Cost: Consider both initial cost and long-term maintenance expenses.
For applications similar to those suited for the 6307 2RSR, but with different specific requirements, consider:
- 6307 ZZ for higher speed applications in clean environments
- 6307 Open for systems with central lubrication
- 6307 C3 for high-temperature operations
- 6207 2RSR for applications with tighter space constraints
- 6308 2RSR for heavier load requirements
Remember, while these alternatives may seem similar, small differences can significantly impact performance and
longevity. Always consult with a bearing specialist or the equipment manufacturer when selecting an alternative
to ensure it meets your specific needs.







