71934 CD/P4ADBB
71900 Series Super Precision Angular Contact Ball Bearings
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71934 CD/P4ADBB Bearing Product Overview & Core Advantages
The 71934 CD/P4ADBB is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set features a P4A tolerance class and light preload (Class B), making it ideal for machine tool spindles and other high-precision machinery. Its configuration enables it to withstand combined loads (radial and axial) simultaneously while maintaining high running accuracy and system stability.
71934 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71934 | Basic bearing designation indicating size series and bore diameter |
| C | 15° contact angle design |
| D | Duplex back-to-back arrangement |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| DB | Duplex back-to-back mounting (confirmed from matched arrangement) |
| B | Light preload classification |
71934 CD/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The duplex back-to-back configuration creates a rigid bearing system that minimizes deflection under load, ensuring exceptional positioning accuracy. Combined with P4A tolerance class, this bearing delivers superior running precision essential for high-speed machining applications.
Optimized Load Capacity: With a 15° contact angle and duplex arrangement, this bearing efficiently handles combined radial and axial loads in both directions. The phenolic cage provides excellent strength and dimensional stability at high speeds.
High-Speed Performance: The lightweight phenolic cage material and optimized internal geometry contribute to the bearing's ability to operate at high rotational speeds up to 16,250 rpm, making it suitable for demanding spindle applications.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, this bearing offers excellent wear resistance and fatigue life, ensuring long-term reliability in precision applications.
71934 CD/P4ADBB Bearing Typical Application Areas
- Machine Tool Spindles - High-precision milling, grinding, and turning centers
- Precision Gearboxes - Industrial transmission systems requiring high accuracy
- High-Speed Machining Centers - Applications demanding exceptional rotational accuracy
- Industrial Pumps & Compressors - Where combined loads and precision are critical
- Robotics & Automation - Precision positioning systems and rotary tables
- Aerospace Components - Flight control systems and auxiliary power units
