311-ZN
300 Series Snap Ring Bearings
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Part No.
Part No.
311-ZN
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.5 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Shielded
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
Outer Ring Dimensions
Outer ring locating feature
Snap Ring Groove
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:
$ 33.91
/ each
In Stock
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311-ZN Bearing Product Overview & Core Advantages
The 311-ZN is a single row deep groove ball bearing designed for robust performance in demanding applications. Engineered with metric dimensions and manufactured to ABEC 1 | ISO P0 tolerance standards, this bearing offers a reliable solution for handling significant radial loads. Its shielded design provides effective protection against contamination while maintaining low friction. The inclusion of a snap ring groove on the outer ring facilitates secure and simplified axial location within a housing, enhancing mounting precision and operational stability.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 311 | Standard bearing series designation, indicating the bearing dimensions (55mm bore, 120mm OD, 29mm width). |
| ZN | Suffix indicating a snap ring groove on the non-sealed side of the outer ring. This feature allows for secure axial positioning. |
311-ZN Bearing Structural Features & Performance Benefits
- High Load Capacity: The single row deep groove ball bearing construction is optimized to carry substantial radial dynamic load ratings of 17,805 lbf and radial static load ratings of 15,062 lbf.
- Contamination Protection: The shielded (ZZ) seal type effectively excludes larger contaminants, prolonging bearing life and reliability in various environments.
- Simplified Mounting & Axial Location: The snap ring groove on the outer ring provides a positive locating feature, simplifying assembly and enhancing the rigidity of the overall assembly.
- Standard Precision & Clearance: Manufactured to ABEC 1 (ISO P0) tolerance class with CN group radial internal clearance, ensuring consistent performance and interchangeability for general industrial applications.
311-ZN Bearing Typical Application Areas
This bearing is ideally suited for a wide range of industrial machinery and equipment, including:
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Industrial Pumps and Fans
- Material Handling Conveyors
- Agricultural Machinery
