71915 CD/P4ADBA
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71915 CD/P4ADBA Bearing Product Overview & Core Advantages
The 71915 CD/P4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a duplex back-to-back (DB) matched set, this bearing configuration provides high stiffness and excellent stability under combined loads, including radial and bidirectional axial loads. Manufactured to P4A tolerance class, it ensures superior running accuracy, making it ideal for high-speed spindles and precision machinery where reliability and performance are critical.
71915 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing designation (75mm bore, 105mm OD, 32mm width) |
| C | 15° contact angle design |
| D | Duplex back-to-back (DB) arrangement |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DB | Duplex back-to-back mounting |
| A | Extra light preload classification |
71915 CD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back arrangement creates a wide effective spread between load centers, significantly increasing moment rigidity and operational stability under complex loading conditions.
Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads in both directions. The radial dynamic load rating of 13,162 lbf and static load rating of 16,875 lbf ensure reliable performance in demanding applications.
Precision High-Speed Performance: The phenolic resin cage provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling high-speed operation up to 36,000 rpm. The P4A tolerance class guarantees minimal runout and vibration for smooth, precise rotation.
Optimized Material Selection: Manufactured from chrome steel for both rings and balls, the bearing offers high hardness, wear resistance, and dimensional stability across the operating temperature range of -30°C to 110°C.
71915 CD/P4ADBA Bearing Typical Application Areas
The 71915 CD/P4ADBA is specifically engineered for high-precision, high-speed applications including:
- Machine tool spindles for milling, grinding, and turning centers
- High-frequency motor spindles in precision manufacturing
- Precision rotary tables and indexing heads
- Medical equipment spindles requiring exceptional accuracy
- Aerospace positioning systems and instrumentation
- Robotic arm joints and precision automation equipment
