71912 CD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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71912 CD/P4ADGB Bearing Product Overview & Core Advantages
The 71912 CD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4A tolerance class, this bearing excels in high-precision machinery. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs to support combined loads. Preloaded with a Light / Class B preload, it ensures high system rigidity and minimizes axial and radial play, making it ideal for high-reliability applications.
71912 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71912 | Basic bearing designation (60mm bore, 85mm OD, 26mm width) |
| CD | Contact angle of 15° and specific internal design |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DGB | Universal Matchable (SU) arrangement, paired for optimal preload |
71912 CD/P4ADGB Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on bore, outside diameter, and width, ensuring minimal runout and vibration.
Optimized Contact Angle: The 15° contact angle provides an excellent balance between radial and axial load capacity, making it suitable for combined loads.
High-Speed Capability: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 31,000 rpm, reducing friction and heat generation.
Superior Rigidity: The Light preload eliminates internal clearance, resulting in high system stiffness, which is critical for maintaining precision under load.
Universal Matching: The Universal Matchable (SU) feature allows two bearings to be paired in various configurations (back-to-back, face-to-face, or tandem) to suit specific application requirements for moment loads and rigidity.
71912 CD/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Gearboxes: In applications where low noise, high speed, and accurate positioning are critical.
- High-Frequency Motors and Spindles: Supporting shafts in motors operating at very high rotational speeds.
- Medical and Laboratory Equipment: Used in centrifuges and other precision instruments that demand quiet, vibration-free operation.
- Aerospace Actuation Systems: In control surface actuators and other mechanisms where reliability and precision are paramount.
