311SF
200, 300 & 6400 Series Industrial Single Row Deep Groove Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
311SF
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.5 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.015mm to 0
Width
29 mm
Width tolerance
-0.15mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
17805 lbf
Radial static load rating
15062 lbf
Limiting speed
6.3 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
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:
$ 28.57
/ each
In Stock
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311SF Bearing Product Overview & Core Advantages
The 311SF metric single row deep groove ball bearing is engineered for robust radial load applications requiring reliable performance. Manufactured to ABEC 1 | ISO P0 tolerance standards, this open-type bearing offers a cost-effective solution for general industrial use. Its chrome steel construction throughout (rings, balls, and cage) ensures consistent durability and a long service life under demanding operating conditions.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 311 | Standard bearing series designation, indicating specific bearing dimensions (55mm bore, 120mm OD, 29mm width). |
| SF | Manufacturer-specific suffix. Consult factory documentation for precise interpretation. |
| Open (No Seal) | No contact seals, enabling higher limiting speeds and suitability for applications where external sealing is provided. |
| CN Clearance | Standard radial internal clearance for normal operating conditions and fits. |
311SF Bearing Structural Features & Performance Benefits
- Optimized Radial Load Capacity: The single row deep groove raceway geometry is specifically designed to support high radial dynamic load ratings of 17,805 lbf and radial static load ratings of 15,062 lbf, providing reliable performance in heavy-duty applications.
- High-Speed Capability: The open design and one-piece chrome steel cage contribute to a high limiting speed of 6,300 rpm, making it suitable for various motor and drive applications.
- Precision & Consistency: Manufactured to ABEC 1 precision class standards, this bearing ensures smooth, low-vibration operation and consistent running accuracy.
- Robust Material Construction: The use of chrome steel for all critical components (rings, balls, cage) provides excellent resistance to wear and fatigue, enhancing overall bearing life.
311SF Bearing Typical Application Areas
- Electric Motors and Generators
- Industrial Gearboxes
- Material Handling Equipment (Conveyors, Pulleys)
- Agricultural Machinery
- General Industrial Machinery requiring reliable radial load support
