308-2ZNR
300 Series Snap Ring Bearings
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Part No.
Part No.
308-2ZNR
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.64 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.015mm to 0
Width
23 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Outside diameter of snap ring
96.5 mm
Width of snap ring
2.46 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
10274 lbf
Radial static load rating
8093 lbf
Limiting speed
6.8 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:
$ 14.27
/ each
In Stock
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308-2ZNR Bearing Product Overview & Core Advantages
The 308-2ZNR is a single row deep groove ball bearing designed for exceptional radial load capacity and reliable performance in demanding applications. This shielded bearing features an integral snap ring on its outer ring, enabling simplified axial location within a housing without requiring complex machining. Manufactured to P0 tolerance class and pre-lubricated with grease, it offers a robust, ready-to-install solution for machinery requiring high reliability and maintenance-free operation.
308-2ZNR Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 308 | Standard bore diameter (40 mm) and dimension series |
| 2Z | Non-contact shields on both sides, providing effective contamination protection while maintaining high-speed capability |
| NR | Snap ring groove and snap ring on the outer ring, facilitating easy axial positioning and reducing assembly complexity |
308-2ZNR Bearing Structural Features & Performance Benefits
- High Radial Load Capacity: The deep groove raceway and optimized internal geometry enable it to handle significant radial dynamic loads up to 10,274 lbf, making it suitable for heavy-duty applications.
- Simplified Assembly: The integrated snap ring (fitted) eliminates the need for separate housing shoulders or complex machining, reducing installation time and cost.
- Contamination Resistance: The non-contact shields (2Z) effectively protect the bearing interior from dust and debris while allowing for a limiting speed of 6,800 rpm.
- Maintenance-Free Operation: Pre-lubricated with high-quality grease and featuring stainless steel cage, this bearing ensures long-term reliability and reduced maintenance requirements across its operating temperature range of -30°C to 120°C.
308-2ZNR Bearing Typical Application Areas
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
- Conveyor Systems
