309-2ZNR/MT33
300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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309-2ZNR/MT33 Bearing Product Overview & Core Advantages
The 309-2ZNR/MT33 is a single row deep groove ball bearing engineered for high-performance industrial applications. This shielded bearing features an integral snap ring on its outer ring, providing secure axial location within a housing without requiring complex machining. Its metric dimensions (45mm bore, 100mm OD, 25mm width) and ABEC 1 precision make it an ideal solution for applications demanding reliable radial load capacity and simplified assembly.
309-2ZNR/MT33 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 309 | Basic bearing series with 45mm bore, 100mm OD |
| 2Z | Double-sided steel shields providing effective contaminant protection |
| NR | Snap ring groove and snap ring fitted on outer diameter |
| MT33 | Pre-lubricated with high-performance grease for extended service life |
309-2ZNR/MT33 Bearing Structural Features & Performance Benefits
Enhanced Contamination Protection: The double-sided steel shields (2Z) effectively exclude contaminants while retaining lubrication, significantly extending bearing service life in demanding environments.
Simplified Housing Design: The integrated snap ring (NR) eliminates the need for complex housing shoulders or end covers, reducing assembly time and manufacturing costs while ensuring secure axial positioning.
Optimized Load Capacity: Constructed from chrome steel throughout (rings, balls, and cage), this bearing delivers reliable radial dynamic load rating of 12,364 lbf and static load rating of 9,892 lbf, suitable for moderate to heavy radial loads.
Maintenance-Free Operation: Pre-lubricated with MT33 grease, the bearing operates effectively across a temperature range of -30°C to 120°C without requiring relubrication, reducing maintenance intervals and total cost of ownership.
309-2ZNR/MT33 Bearing Typical Application Areas
This versatile bearing finds extensive use across multiple industries:
- Electric Motors & Gearboxes: Providing reliable support for motor shafts with simplified housing retention
- Industrial Pumps & Compressors: Handling radial loads in fluid handling equipment with contaminant protection
- Material Handling Equipment: Conveyor systems and pulley assemblies requiring secure axial location
- Agricultural Machinery: Implement drives and transmission systems operating in harsh environments
- Automotive Components: Auxiliary drives and accessory systems benefiting from the snap ring retention feature
