6311 NRJEM
6300 Series Snap Ring Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
6311 NRJEM
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.41 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.013mm to 0
Width
29 mm
Width tolerance
-0.15mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
16658 lbf
Radial static load rating
10116 lbf
Limiting speed
8 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:
$ 20.6
/ each
In Stock
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6311 NRJEM Bearing Product Overview & Core Advantages
The 6311 NRJEM is a single row deep groove ball bearing designed for exceptional radial load capacity and reliable performance in demanding applications. Featuring a snap ring groove on its outer ring for secure axial positioning, this open-type bearing offers high versatility. Manufactured to ABEC 1 | ISO P0 tolerance standards with standard CN radial internal clearance, it delivers consistent operation and is constructed entirely from durable chrome steel for extended service life.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 6311 | Standard bearing series designation indicating dimensions: 55mm bore, 120mm OD, 29mm width. |
| NR | Outer ring features a snap ring groove for simplified axial location and housing design. |
| JEM | JEM suffix is not a standard SKF designation. Please verify the specific manufacturer's code for precise technical details. |
6311 NRJEM Bearing Structural Features & Performance Benefits
- High Radial Load Capacity: The optimized single row deep groove raceway geometry enables a high dynamic load rating of 16,658 lbf, making it suitable for substantial radial forces.
- Simplified Assembly & Positioning: The integrated snap ring groove (NR) on the outer ring allows for secure axial fixation within the housing, reducing design complexity and assembly time.
- Robust Construction: All components, including rings, balls, and cage, are manufactured from chrome steel, providing high hardness, wear resistance, and long-term durability.
- Standard Precision & Clearance: Conforms to ABEC 1 (ISO P0) tolerance class with CN normal radial internal clearance, ensuring reliable performance for a wide range of general industrial applications.
- Versatile Lubrication Options: The open design allows for the use of various greases or oils, enabling customization based on specific speed and temperature requirements (up to 120°C).
6311 NRJEM Bearing Typical Application Areas
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
- General Industrial Machinery requiring reliable radial load support with axial positioning.
