S71910 CB/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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S71910 CB/P4ADBA Bearing Product Overview & Core Advantages
The S71910 CB/P4ADBA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability and can accommodate combined loads (radial and axial loads from both directions simultaneously). Manufactured to the stringent P4A tolerance class, it delivers high running accuracy and is preloaded for extra-light operational conditions, making it ideal for high-speed, high-precision machinery where reliability is paramount.
S71910 CB/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Designates a super-precision bearing series. |
| 71910 | Basic bearing designation indicating size series and 50 mm bore diameter. |
| C | Specifies a 15° contact angle, optimized for high-speed operation. |
| B | Indicates a 40° pressure angle variant (standard for this series). |
| P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy. |
| DB | Signifies the bearings are supplied as a duplex back-to-back matched set. |
| A | Indicates a specific preload level (Extra light / Class A). |
S71910 CB/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The back-to-back duplex arrangement creates a wide effective spread between load centers, significantly increasing moment rigidity and operational stability under complex loading conditions.
Superior Load Capacity: The angular contact design with a 15° contact angle is engineered to handle significant combined radial and axial loads from both directions efficiently.
Optimized High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 34,000 rpm. The sealed design and pre-applied grease lubrication ensure consistent performance at high rotational speeds.
Precision Engineering: Manufactured from chrome steel and held to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications demanding the highest levels of precision.
S71910 CB/P4ADBA Bearing Typical Application Areas
The S71910 CB/P4ADBA is ideally suited for high-performance applications in:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Robotics: In robotic arm joints and gears where high positional accuracy and moment load capacity are essential.
- High-Frequency Spindles: Used in PCB drilling, dental drills, and other applications with very high rotational speeds.
- Medical Equipment: In centrifuges and scanner gantries that demand quiet, smooth, and reliable operation.
- Aerospace & Defense Systems: For gyroscopes, radar systems, and other critical navigation and control components.
