6308-2RS1NR/C3
6300 Series Snap Ring Bearings
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Part No.
Part No.
6308-2RS1NR/C3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
620 g
Tolerance class
ABEC 1 | ISO P0
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.015mm to 0
Width
23 mm
Width tolerance
-0.120mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
915 lbf
Radial static load rating
5395 lbf
Limiting speed
7.5 X 1000 rpm
Lubrication
None
Radial internal clearance
C3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
Price available upon request.
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6308-2RS1NR/C3 Bearing Product Overview & Core Advantages
The 6308-2RS1NR/C3 is a single row deep groove ball bearing engineered for high reliability and robust performance in demanding applications. Its core advantages stem from its sealed design and specific internal configuration. This bearing is preeminent for its ability to handle significant radial loads and moderate axial loads in both directions. The combination of a snap ring groove, integral seals, and a C3 radial internal clearance makes it an ideal, compact solution for applications requiring simplified mounting, contamination protection, and stable operation under varying thermal conditions.
6308-2RS1NR/C3 Bearing Model Code Explained, Specifications & Naming Convention
| 6308 | Basic series number, indicating a medium series bearing with a 40mm bore and 90mm outside diameter. |
| 2RS1 | Denotes the bearing is equipped with contact seals on both sides. The "RS1" type seals provide excellent protection against contamination and grease leakage. |
| NR | Indicates the outer ring has a snap ring groove. This feature allows for simplified axial location within a housing, reducing the need for complex housing shoulders and covers. |
| C3 | Specifies a greater than normal radial internal clearance. This is essential for applications where thermal expansion is a concern, preventing pre-load and seizure, ensuring smooth operation. |
6308-2RS1NR/C3 Bearing Structural Features & Performance Benefits
- Robust Sealing & Contamination Resistance: The 2RS1 contact seals effectively shield the internal components from dust, moisture, and other contaminants while retaining lubricant. This significantly extends bearing service life and enables reliable operation in harsh environments.
- Simplified Assembly & Axial Location: The snap ring groove (NR) on the outer ring facilitates easy and secure axial positioning. This design feature streamlines the assembly process and can lead to cost savings by simplifying housing design.
- Optimized for Thermal Stability: The C3 radial internal clearance is a critical feature for applications subject to significant temperature fluctuations or where fits result in a reduction of internal clearance. It prevents excessive pre-loading that can lead to overheating and premature failure.
- High Load Capacity & Durability: Manufactured from high-grade chrome steel for both rings and balls, this bearing offers a high dynamic and static load rating, ensuring long-term durability and performance under substantial radial loads.
6308-2RS1NR/C3 Bearing Typical Application Areas
The 6308-2RS1NR/C3 is versatile and finds use across numerous industries. Key application areas include:
- Electric Motors and Generators: Ideal for end-shield mounting where the snap ring simplifies assembly.
- Industrial Gearboxes and Transmissions: Provides reliable support for shafts under heavy radial loads.
- Material Handling Equipment: Conveyor pulleys, rollers, and other machinery requiring sealed, maintenance-friendly bearings.
- Agricultural Machinery: Withstands the demanding, dirty conditions typical in farm equipment.
- General Industrial Machinery: A go-to solution for pumps, blowers, and fans where contamination protection and ease of installation are paramount.
