S71914 CD/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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S71914 CD/P4ADBA Bearing Product Overview & Core Advantages
The S71914 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, it is engineered to accommodate combined loads—simultaneously handling significant radial loads and thrust loads in both directions. This configuration provides high running accuracy and system stiffness. Manufactured to P4A tolerance class and featuring a phenolic cage, it is optimized for high-speed operation and reliable performance in precision machinery.
S71914 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Designates a super-precision bearing. |
| 71914 | Basic bearing designation (70mm bore, 100mm OD, 32mm width). |
| CD | Indicates a duplex bearing in a Back-to-Back (DB) arrangement. |
| P4A | Specifies the tolerance class, denoting very high dimensional and running accuracy. |
| DBA | Further defines the specific preload level, in this case, Extra light (Class A). |
S71914 CD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & System Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread of the load-carrying races, significantly increasing the moment rigidity of the bearing system. This is critical for applications where shaft deflection must be minimized.
Superior Load Capacity: The 15° contact angle and duplex design enable the bearing to handle substantial combined radial and axial loads from both directions simultaneously.
Optimized High-Speed Performance: The lightweight and robust phenolic resin cage ensures stable operation and reduced centrifugal forces at the limiting speed of 28,000 rpm. The grease lubrication is suitable for the specified high-speed and temperature range.
Precision Engineering: Adherence to the P4A tolerance class ensures minimal runout and vibration, which is essential for achieving high levels of machining or operational accuracy.
S71914 CD/P4ADBA Bearing Typical Application Areas
The S71914 CD/P4ADBA is ideally suited for high-precision, high-speed applications, including:
- Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes
- Robotic Drives and Rotary Joints
- Aerospace and Defense Positioning Systems
