6311-2Z
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Part No.
Part No.
6311-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.42 kg
Tolerance class
P6
Seal type
Shielded
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
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
16658 lbf
Radial static load rating
10116 lbf
Limiting speed
6.3 X 1000 rpm
Lubrication
Grease
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:
$ 24.78
/ each
In Stock
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6311-2Z Bearing Product Overview & Core Advantages
The 6311-2Z is a single row deep groove ball bearing designed for exceptional performance in demanding applications. Engineered with metric dimensions and manufactured to P6 tolerance class, it offers high precision and reliable operation. Its core advantage lies in its ability to handle significant radial loads while also accommodating moderate axial loads in both directions. The inclusion of integrated shields (2Z) and factory-applied grease lubrication makes it a robust, low-maintenance solution, ensuring long service life and consistent performance in a wide operating temperature range.
6311-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Code | Technical Meaning & Advantage |
|---|---|---|
| Basic Designation | 6311 | Standard single row deep groove ball bearing with a 55 mm bore, 120 mm OD, and 29 mm width. |
| Seal/Shield Type | 2Z | Features steel shields on both sides. This provides effective protection against contamination while allowing for higher limiting speeds compared to contact seals. |
6311-2Z Bearing Structural Features & Performance Benefits
- High Load Capacity & Rigidity: The single row deep groove raceway design, combined with chrome steel rings and balls, provides a high radial dynamic load rating of 16,658 lbf and a radial static load rating of 10,116 lbf, ensuring stable operation under significant loads.
- Optimized High-Speed Performance: The use of a lightweight, durable stainless steel cage and the low-friction characteristics of the shielded design contribute to a high limiting speed of 6,300 rpm.
- Precision & Reliability: Manufactured to P6 tolerance class with a standard CN radial internal clearance, this bearing guarantees precise running accuracy and smooth operation, which is critical for high-performance machinery.
- Long-Term, Maintenance-Free Operation: The 2Z shields effectively retain the factory-applied grease and exclude contaminants. This sealed-for-life construction, suitable for a temperature range of -30°C to 120°C, eliminates the need for re-lubrication in many applications.
6311-2Z Bearing Typical Application Areas
This versatile bearing is ideally suited for a wide range of industrial applications requiring reliability and high performance, including:
- Electric Motors and Generators
- Industrial Gearboxes
- Pumps and Compressors
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
- General Industrial Machinery requiring a robust, sealed bearing solution.
