71910 CD/P4AQT
71900 Series Super Precision Angular Contact Ball Bearings
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71910 CD/P4AQT Bearing Product Overview & Core Advantages
The 71910 CD/P4AQT is a precision angular contact ball bearing designed for the most demanding applications requiring exceptional accuracy and rigidity. This P4A tolerance class bearing is supplied in a Quadruplex Tandem (QT) matched arrangement, consisting of four preloaded bearings. This configuration is engineered to deliver superior axial rigidity and handle significant combined loads (radial and axial) in one direction, making it ideal for high-precision spindles and other critical machinery components where minimal deflection is paramount.
71910 CD/P4AQT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71910 | Basic bearing series and size designation. |
| C | Designates a 15° contact angle, optimized for high-speed operation and high axial load capacity. |
| D | Indicates that the bearing is part of a matched set. |
| P4A | Specifies a high-precision tolerance class with enhanced running accuracy, tighter than ABEC 7/ISO P4. |
| QT | Denotes the Quadruplex Tandem arrangement. Four bearings are mounted in tandem to maximize axial load capacity and stiffness in one direction. |
71910 CD/P4AQT Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The Quadruplex Tandem (QT) arrangement with applied preload creates an exceptionally rigid bearing system. This design significantly increases the axial stiffness, allowing the set to withstand heavy combined loads and maintain precise shaft positioning under demanding conditions.
Optimized for High-Speed Operation: Featuring a lightweight and robust phenolic cage, this bearing is engineered for high-speed performance. The cage ensures stable ball guidance and reduces centrifugal forces, contributing to a high limiting speed of 46,000 rpm. The 15° contact angle further enhances its suitability for high-speed applications.
Precision and Durability: Manufactured to P4A tolerance class from high-grade chrome steel for both rings and balls, this bearing guarantees exceptional running accuracy, low noise, and long service life. The bearings are pre-lubricated for immediate operation.
71910 CD/P4AQT Bearing Typical Application Areas
The 71910 CD/P4AQT is specifically designed for high-performance machinery where ultimate precision and rigidity are non-negotiable. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- High-Speed Robotic Drives: Applications requiring precise and rapid angular positioning.
- Advanced Medical Equipment: Dental handpieces and imaging device rotors.
