71906 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
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71906 CD/P4ADBA Bearing Product Overview & Core Advantages
The 71906 CD/P4ADBA is a precision angular contact ball bearing designed for applications requiring exceptional accuracy and reliability. Manufactured to P4A tolerance class, this bearing delivers superior running precision. Its duplex back-to-back (DB) arrangement provides high rigidity and excellent stability, making it capable of withstanding combined loads (radial and axial). The extra light preload (Class A) ensures minimal friction and optimal performance in high-speed applications, while the phenolic cage contributes to smooth operation at the limiting speed of 100,500 rpm.
71906 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Basic bearing designation (30mm bore, 47mm OD, 18mm width) |
| C | 15° contact angle |
| D | Duplex back-to-back (DB) arrangement |
| P4A | High precision tolerance class (exceeds ABEC 7) |
| DB | Duplex back-to-back mounting |
| A | Extra light preload |
71906 CD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and maintains shaft alignment under combined radial and axial loads.
Precision Performance: Manufactured to P4A tolerance standards with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for precision applications.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at high speeds, supporting the limiting speed of 100,500 rpm.
Optimized Load Capacity: With a dynamic load rating of 2565 lbf and static load rating of 2059 lbf, this bearing delivers reliable performance in demanding applications.
Temperature Performance: Chrome steel construction and phenolic cage enable stable operation across a temperature range of -30°C to 110°C.
71906 CD/P4ADBA Bearing Typical Application Areas
- Machine tool spindles and high-precision machining centers
- High-speed spindles for grinding and milling applications
- Precision industrial pumps and compressors
- Robotic arm joints and automation equipment
- Medical equipment and precision instruments
- Aerospace positioning systems and guidance mechanisms
