71913 CD/P4ADFB
71900 Series Super Precision Angular Contact Ball Bearings
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71913 CD/P4ADFB Bearing Product Overview & Core Advantages
The 71913 CD/P4ADFB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This duplex face-to-face (DF) matched set is preloaded to Light / Class B specifications, ensuring optimal performance under combined loads. Its primary advantage lies in its ability to handle significant radial and axial loads simultaneously, making it ideal for high-precision, high-reliability machinery where stability and minimal deflection are critical. The bearing operates effectively within a wide temperature range and comes pre-lubricated for immediate use.
71913 CD/P4ADFB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing series, indicating a high-precision angular contact design with a 65mm bore, 90mm OD, and 26mm width. |
| C | Designates a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates the bearing is part of a duplex (matched pair) set. |
| P4A | Specifies the tolerance class, denoting very high precision levels for runout and dimensional accuracy. |
| DF | Specifies the matched arrangement as Face-to-Face (DF). This configuration provides high rigidity and is effective for moment loads. |
| B | Indicates the specific preload level applied to the matched set, in this case, Light / Class B. |
71913 CD/P4ADFB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex face-to-face (DF) arrangement creates a highly rigid bearing system capable of withstanding combined radial and axial loads from both directions. This setup significantly increases system stability and reduces shaft deflection under operational stresses.
Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and exceptional dimensional consistency, which is crucial for applications requiring high rotational accuracy and smooth operation.
Optimized High-Speed Capability: The 15° contact angle and phenolic cage contribute to excellent high-speed performance. The phenolic cage is lightweight and offers superior guidance at the limiting speed of 31,000 rpm.
Material & Construction: Constructed from chrome steel for both rings and balls, the bearing provides high durability and fatigue resistance. The open seal type allows for efficient lubrication management in controlled environments.
71913 CD/P4ADFB Bearing Typical Application Areas
The 71913 CD/P4ADFB is engineered for high-performance applications, including:
- Machine Tool Spindles: For milling, grinding, and turning centers requiring high precision and rigidity.
- High-Speed Precision Drives: In applications such as electric motors and spindles where high rotational speeds are critical.
- Industrial Pumps & Compressors: Where reliable performance under combined loads is necessary.
- Precision Instrumentation: For medical devices, metrology equipment, and optical systems demanding minimal runout.
