71916 ACD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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71916 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 71916 ACD/P4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing features a back-to-back (DB) matched arrangement, providing superior stability under combined radial and axial loads. Its moderate preload (Class C) ensures optimal stiffness and rotational accuracy, making it ideal for high-precision machinery where minimal deflection is critical. The phenolic cage and chrome steel construction contribute to its high-speed capability and long service life.
71916 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71916 | Bearing series and size designation |
| AC | Angular Contact design with 25° contact angle |
| D | Duplex bearing arrangement |
| P4A | High precision tolerance class with enhanced running accuracy |
| DB | Back-to-Back mounting configuration for high moment rigidity |
| C | Moderate preload classification |
71916 ACD/P4ADBC Bearing Structural Features & Performance Benefits
Enhanced Rigidity: The duplex back-to-back arrangement creates a wide effective spread between load centers, significantly increasing system stiffness and resistance to moment loads. This configuration is essential for applications requiring high positional accuracy.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads in both directions. The dynamic load rating of 12,578 lbf and static load rating of 16,538 lbf ensure reliable performance under demanding operating conditions.
High-Speed Performance: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at high speeds, supporting the limiting speed of 28,000 rpm. The lightweight construction reduces centrifugal forces, enhancing high-speed capability.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore and OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
71916 ACD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring extreme rigidity and accuracy
- Precision Gearboxes: Industrial transmission systems demanding high-speed operation and load capacity
- Robotic Systems: Joint and articulation points in industrial robots where precision and stiffness are critical
- Medical Equipment: High-speed dental handpieces and surgical tools requiring reliable precision bearings
- Aerospace Components: Actuator systems and auxiliary power units needing high-performance angular contact bearings
