305270 D
Double Row Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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305270 D Bearing Product Overview & Core Advantages
The 305270 D is a metric double row angular contact ball bearing engineered for applications demanding high precision and robust load-carrying capacity. This precision bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and axial loads from both directions. Its open design, combined with a P6 (ABEC-3) tolerance class, ensures exceptional running accuracy, making it ideal for high-reliability machinery where precise shaft guidance is critical. The optimized internal geometry contributes to its high rigidity and stable performance under demanding operational conditions.
305270 D Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 305270 | The basic bearing designation, defining the core bearing dimensions (260mm bore, 369.5mm OD, 92mm width). |
| D | Signifies a specific internal design and contact angle, optimized for handling combined loads with high rigidity. |
305270 D Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball complement and steep contact angle provide a very high rigid support system, enabling the bearing to withstand heavy radial dynamic load ratings of 89,325 lbf and radial static load ratings of 159,750 lbf.
Precision & Speed: Manufactured to a P6 tolerance class and featuring a lightweight, durable stainless steel cage, the bearing maintains precision at a limiting speed of 1,700 rpm. The open design facilitates efficient lubrication management for optimal thermal control.
Material & Durability: Constructed from chrome steel for both rings and balls, the bearing offers high fatigue life and wear resistance. The specified load point distance of 246 mm ensures stable moment load capacity.
305270 D Bearing Typical Application Areas
The 305270 D is suited for heavy-duty industrial applications requiring high precision and reliability, including:
- Industrial Gearboxes and heavy machinery spindles.
- Large Pumps and Compressors for handling significant radial and axial forces.
- Precision Machine Tools and indexing heads requiring high rigidity.
- Material Handling Equipment such as large conveyors and turntables.
