309-ZNR
300 Series Snap Ring Bearings
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Part No.
Part No.
309-ZNR
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.88 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.015mm to 0
Width
25 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Outside diameter of snap ring
106.5 mm
Width of snap ring
2.46 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
12364 lbf
Radial static load rating
9892 lbf
Limiting speed
7.5 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:
$ 21.56
/ each
In Stock
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309-ZNR Bearing Product Overview & Core Advantages
The 309-ZNR is a single row deep groove ball bearing engineered for robust performance in demanding applications. Its defining feature is the snap ring (fitted) on the outer ring, which simplifies axial location within a housing, reducing design complexity and assembly time. Manufactured from high-grade chrome steel with a stainless steel cage, this bearing offers high reliability and excellent resistance to wear. It is pre-lubricated with grease and features integral shields to protect against contamination, making it a low-maintenance solution ideal for applications requiring consistent radial load capacity and operational stability.
309-ZNR Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 309 | Standard bore diameter (45 mm), outer diameter (100 mm), and width (25 mm). | Interchangeable and readily available bearing dimensions. |
| Z | One side shielded. | Protects bearing internals from dust and debris, extending service life. |
| NR | Snap ring groove and snap ring fitted on the outer ring. | Enables secure and cost-effective axial location, simplifying housing design. |
309-ZNR Bearing Structural Features & Performance Benefits
- Snap Ring Locating Feature: The integrated snap ring provides a positive stop, ensuring precise axial positioning without the need for complex housing shoulders or lock nuts. This enhances assembly accuracy and reduces overall system costs.
- High Load Capacity: With a dynamic load rating of 12,364 lbf and a static load rating of 9,892 lbf, this bearing is built to handle significant radial loads in a compact envelope.
- Sealed and Pre-Lubricated Design: The shielded (Z) construction and factory-applied grease provide long-term lubrication and protection, resulting in a maintenance-free solution for the majority of its service life.
- Optimized for Standard Applications: Built to P0 (Normal) tolerance class with CN (Normal) radial internal clearance, it delivers reliable and cost-effective performance for general industrial use.
309-ZNR Bearing Typical Application Areas
This bearing is ideally suited for a wide range of industrial machinery where secure axial location and reliable radial load support are paramount. Key sectors include:
- Electric Motors and Gearboxes
- Material Handling Conveyors
- Agricultural Machinery
- Pumps and Fans
- Automotive Components (e.g., idler pulleys, tensioners)
