6311N/C3
6300 Series Snap Ring Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
6311N/C3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.015 mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.015 mm to 0
Width
29 mm
Width tolerance
-0.12 mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring Groove
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
16096 lbf
Radial static load rating
10116 lbf
Limiting speed
5.6 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
No drawings available at the moment, will be launched soon
Price:
$ 22.15
/ each
In Stock
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6311N/C3 Bearing Product Overview & Core Advantages
The 6311N/C3 is a single row deep groove ball bearing designed for robust performance in demanding industrial applications. This open bearing features a snap ring groove on its outer ring, enabling secure axial location within a housing without complex machining. Manufactured to ABEC 1 | ISO P0 tolerance standards, it offers reliable precision for general machinery. A key characteristic is its specified C3 radial internal clearance, which accommodates thermal expansion in applications with elevated operating temperatures or interference fits, ensuring smooth operation and extended service life.
6311N/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Benefit |
|---|---|---|
| 6311 | Standard bearing series designation indicating a metric single row deep groove ball bearing with a 55mm bore, 120mm OD, and 29mm width. | Defines the core bearing dimensions and type for interchangeability. |
| N | Signifies a snap ring groove on the outer ring. | Simplifies housing design and assembly, providing secure axial location. |
| C3 | Indicates a greater than normal radial internal clearance. | Prevents pre-loading and binding in applications with thermal expansion or heavy interference fits. |
6311N/C3 Bearing Structural Features & Performance Benefits
- Snap Ring Groove for Axial Location: The outer ring groove allows for the use of a snap ring, providing a simple and effective method for axial positioning within the housing. This eliminates the need for complex shoulder machining or end caps, reducing assembly time and cost.
- Optimized for Radial Loads: The single row deep groove construction is primarily designed to support high radial dynamic load ratings (16,096 lbf), making it a workhorse for rotating shafts.
- Accommodates Thermal Expansion: The C3 clearance is a critical feature for applications where bearing temperatures differ significantly from ambient or where press fits reduce internal clearance. This prevents overheating and premature failure.
- High-Quality Material Construction: Manufactured from chrome steel for both rings, balls, and cage, this bearing ensures high strength, durability, and consistent performance under standard operating temperatures (-30°C to 120°C).
6311N/C3 Bearing Typical Application Areas
This versatile bearing is commonly specified in a wide range of industrial machinery where reliable radial load capacity and simplified mounting are key. Typical applications include:
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Industrial Fans and Blowers
- Material Handling Conveyors
- Agricultural Machinery
- Pumps and Compressors (for non-locating positions)
