71901 CE/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71901 CE/P4ADGB Bearing Product Overview & Core Advantages
The 71901 CE/P4ADGB is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a light preload (Class B) duplex set, it is engineered to accommodate combined radial and axial loads simultaneously. Its P4A tolerance class and optimized internal geometry ensure outstanding running accuracy and rigidity, making it ideal for high-precision spindles and other critical machinery where reliability is paramount.
71901 CE/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71901 | Bearing series and size designation (12mm bore, 24mm OD, 12mm width) |
| CE | Contact angle of 15° |
| P4A | High precision tolerance class (equivalent to ABEC 7), with enhanced running accuracy requirements |
| DGB | Universal Matchable (SU) bearing pair in a light preload (Class B) arrangement |
71901 CE/P4ADGB Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage and optimized internal design contribute to a high limiting speed of 165,000 rpm, making it an excellent high-speed bearing solution.
Rigidity & Load Capacity: The 15° contact angle and duplexed universal match design provide high rigidity and reliable performance under combined loads (Radial dynamic load: 776 lbf, Static load: 396 lbf).
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional tolerances on bore, outside diameter, and width, ensuring precise shaft positioning and smooth operation.
Material & Lubrication: Constructed from chrome steel for rings and balls, offering high durability. The bearing is pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
71901 CE/P4ADGB Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications including:
- Machine Tool Spindles
- High-Speed Grinding Spindles
- Precision Instrumentation
- Dental Handpieces
- Small High-Speed Motors
