71901 CE/PA9ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71901 CE/PA9ADGA Bearing Product Overview & Core Advantages
The 71901 CE/PA9ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered with an Extra Light (Class A) preload and manufactured to PA9A tolerance class, this bearing delivers superior running accuracy and rotational stability. Its 15° contact angle is optimized to handle combined loads, efficiently supporting both radial and axial forces. The universal matchable (SU) design allows for flexible mounting arrangements in pairs, providing high rigidity and precise shaft positioning in compact installations.
71901 CE/PA9ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71901 | Bearing series and size designation (12mm bore, 24mm OD) |
| CE | Contact angle of 15° |
| PA9A | High-precision tolerance class (PA9A) |
| DGA | Universal Matchable (SU) designation for paired mounting |
71901 CE/PA9ADGA Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to PA9A tolerance class with an Extra Light preload, this bearing ensures minimal runout and high system rigidity, critical for precision applications.
- Optimized Load Capacity: The 15° contact angle and robust chrome steel construction enable efficient handling of combined radial and axial loads.
- High-Speed Capability: The lightweight phenolic resin cage and optimized internal geometry contribute to a high limiting speed of 165,000 rpm, making it suitable for high-speed spindles.
- Universal Matching: The SU (Universal Matchable) feature allows two bearings to be mounted in any combination (face-to-face, back-to-back) to achieve the required stiffness and preload, simplifying inventory and assembly.
71901 CE/PA9ADGA Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for demanding applications where accuracy and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers and grinding spindles.
- Precision Instruments: Measuring devices and optical equipment.
- High-Speed Motors: Spindles for PCB drilling and small precision motors.
- Robotics: Joints and actuators requiring high rigidity and precision.
