S71907 CD/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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S71907 CD/P4ADBB Bearing Product Overview & Core Advantages
The S71907 CD/P4ADBB is a precision angular contact ball bearing designed for high-performance applications. This duplex back-to-back (DB) matched set is preloaded to Light / Class B specifications, delivering exceptional system rigidity and rotational accuracy. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously while maintaining high-speed capability and operational stability. Manufactured to a P4A tolerance class, it is an ideal choice for machine tool spindles and other precision machinery requiring superior running accuracy.
S71907 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S71907 | Bearing series and size designation (35mm bore, 55mm OD, 20mm width) | Indicates a high-precision angular contact bearing with specific bearing dimensions |
| CD | Duplex bearing with Back-to-Back (DB) arrangement and specific preload | Provides high rigidity and moment load capacity |
| P4A | Tolerance class (geometric tolerances equivalent to ABEC 7) | Ensures high precision and consistent performance |
| DBB | Duplex Back-to-Back matched set | Optimized for applications requiring maximum stiffness |
S71907 CD/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity Design: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and shaft deflection, making it suitable for applications demanding extreme positioning accuracy.
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 3578 lbf and static load rating of 2902 lbf ensure reliable performance under demanding conditions.
High-Speed Performance: The phenolic cage contributes to excellent high-speed capability with lower friction and better lubrication distribution. When properly lubricated, it can achieve a limiting speed of 56,000 rpm, making it ideal for high-speed spindle applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
S71907 CD/P4ADBB Bearing Typical Application Areas
The S71907 CD/P4ADBB is specifically engineered for high-precision, high-speed applications including:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and milling spindles requiring high rigidity and accuracy
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Motors: Spindle motors and high-frequency motor applications
- Robotics: Precision robot joints and articulated arm applications
- Medical Equipment: Dental handpieces and surgical tool drives
