S71917 ACE/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The S71917 ACE/P4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This duplex back-to-back (DB) arrangement bearing set is preloaded to Extra Light / Class A specifications, delivering superior rotational accuracy and system rigidity. Engineered to handle combined radial and axial loads simultaneously, it features a sealed design with phenolic cage construction for optimal performance in high-speed and precision environments.
S71917 ACE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71917 | Precision angular contact ball bearing series with 85mm bore diameter |
| ACE | 25° contact angle with enhanced internal design |
| P4A | High precision tolerance class for exceptional running accuracy |
| DB | Duplex Back-to-Back arrangement for improved moment load capacity |
Structural Features and Performance Benefits
High Rigidity and Stability: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and maintains precise shaft positioning under combined loading conditions.
Precision Performance: Manufactured to P4A tolerance class with extra light preload, this bearing ensures minimal runout and vibration for applications requiring exceptional rotational accuracy.
Optimized High-Speed Capability: The phenolic cage material and 25° contact angle contribute to stable operation at high rotational speeds up to 28,000 rpm, while the sealed design retains lubrication effectively.
Enhanced Load Capacity: With 23 chrome steel balls of 11.112mm diameter, this bearing delivers high dynamic and static load ratings (10,395 lbf dynamic / 9,900 lbf static) for reliable performance in demanding applications.
S71917 ACE/P4ADBA Bearing Typical Application Areas
- Machine tool spindles and high-precision machining centers
- High-speed spindles for grinding and milling applications
- Precision rotary tables and indexing systems
- Medical equipment and dental handpieces
- Aerospace positioning systems and instrumentation
- Robotic arm joints and precision automation equipment
