6321
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Part No.
Part No.
6321
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
8090 g
Tolerance class
ABEC-1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
105 mm
Bore diameter tolerance
-0.02mm to 0
Outside diameter
225 mm
Outside diameter tolerance
-0.03mm to 0
Width
49 mm
Width tolerance
-0.200mm to 0
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
41365 lbf
Radial static load rating
34396 lbf
Limiting speed
2.6 X 1000 rpm
Lubrication
Required
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 121.58
/ each
In Stock
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6321 Bearing Product Overview & Core Advantages
The 6321 single row deep groove ball bearing is a metric precision bearing engineered for exceptional radial load capacity and high-speed operation. Its open design and ABEC-1 tolerance class make it a versatile and cost-effective solution for a wide range of industrial applications requiring reliable performance. The bearing is constructed from high-grade chrome steel for durability and features a stainless steel cage for stability at its limiting speed of 2,600 rpm.
6321 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 63 | Bearing series, indicating medium width and a robust design for high radial dynamic load rating. |
| 21 | Bore diameter code, corresponding to a 105 mm bore. |
| Open | No seals or shields, allowing for higher speeds and customizable lubrication. |
6321 Bearing Structural Features & Performance Benefits
- High Radial Load Capacity: The single row deep groove raceway and optimized geometry enable a high radial dynamic load rating of 41,365 lbf and a radial static load rating of 34,396 lbf, making it ideal for applications with significant radial forces.
- Precision & High-Speed Operation: Manufactured to ABEC-1 precision class with a CN radial internal clearance, this bearing ensures smooth running and low vibration. The stainless steel cage provides mechanical integrity at the limiting speed of 2,600 rpm.
- Robust Construction: Rings and balls made from chrome steel (Gcr15) offer high hardness and wear resistance, ensuring a long service life under demanding conditions.
- Standard Internal Clearance: The CN clearance is the standard group, providing a balance of fit and operational performance for most general applications.
6321 Bearing Typical Application Areas
- Industrial Gearboxes and Transmissions
- Electric Motors and Generators
- Material Handling Conveyor Systems
- Agricultural Machinery
- Pumps and Compressors
- General Industrial Machinery
