6306 TN9/C4
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Part No.
Part No.
6306 TN9/C4
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
346 g
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.013mm to 0
Width
19 mm
Width tolerance
-0.120mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
6002 lbf
Radial static load rating
3372 lbf
Limiting speed
9.6 X 1000 rpm
Lubrication
None
Radial internal clearance
C4
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Nylon
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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6306 TN9/C4 Bearing Product Overview & Core Advantages
The 6306 C4 is a single row deep groove ball bearing engineered for high-performance applications requiring exceptional radial load capacity and operational precision. Characterized by its open design and manufactured to ABEC 1 | ISO P0 tolerance standards, this bearing delivers reliable performance in a wide range of industrial settings. Its optimized internal geometry and nylon cage contribute to smooth operation and low noise levels, making it an ideal choice for applications demanding high reliability and efficiency.
6306 TN9/C4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 6306 | Standard designation for a medium-duty deep groove ball bearing with a 30mm bore, 72mm OD, and 19mm width. |
| C4 | Indicates a greater than normal radial internal clearance. This is beneficial for applications with significant thermal expansion or where interference fits are used. |
6306 TN9/C4 Bearing Structural Features & Performance Benefits
- High Radial Load Capacity: The deep groove raceway and robust construction enable it to handle significant radial dynamic loads of 6002 lbf and static loads of 3372 lbf, providing dependable support for rotating shafts.
- Optimized for Smooth Operation: The lightweight nylon cage ensures excellent guidance of the balls, reducing friction, noise, and vibration, which is critical for high-speed applications up to 9,600 rpm.
- Thermal & Fit Versatility: The specified C4 radial clearance accommodates differential thermal expansion between the bearing and housing/shaft, preventing preload and potential seizure in high-temperature or tight-fit scenarios.
- Precision Engineering: Manufactured to ABEC 1 (ISO P0) tolerance class with tight dimensional control on the bore, outside diameter, and width, ensuring predictable performance and easy installation.
- Material Integrity: Constructed from high-carbon chrome steel for both rings and balls, providing high hardness, wear resistance, and a long operational lifespan.
6306 TN9/C4 Bearing Typical Application Areas
This bearing is widely used in various industrial machinery and equipment, including:
- Electric Motors and Gearboxes
- Industrial Pumps and Fans
- Material Handling Conveyors
- Agricultural Machinery
- General Industrial Machinery requiring robust and reliable shaft support
