S71913 ACD/P4ADBC
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71913 ACD/P4ADBC Bearing Product Overview & Core Advantages
The S71913 ACD/P4ADBC is a precision duplex back-to-back angular contact ball bearing designed for demanding applications requiring high rigidity and exceptional running accuracy. Operating under P4A tolerance class, this bearing excels at simultaneously handling combined radial and axial loads from both directions. Its moderate preload (Class C) ensures optimal stiffness and minimizes deflection, making it ideal for high-precision, high-reliability systems where rotational accuracy is paramount.
S71913 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Indicates a high-precision angular contact ball bearing series. |
| 1913 | Specifies the bore diameter (65 mm) and series size. |
| ACD | Denotes a duplex back-to-back (DB) arrangement of two bearings. |
| P4A | Specifies the high precision tolerance class, exceeding standard ABEC 7/ISO P4 levels. |
| DBC | Indicates a specific preload level (Moderate / Class C) applied to the duplex set. |
S71913 ACD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads and provides exceptional stability. With a 25° contact angle and a radial dynamic load rating of 7178 lbf, it is engineered to handle significant combined loads.
Precision & Speed Performance: Manufactured to P4A tolerance class with tight dimensional controls on the bore diameter and outside diameter, this bearing ensures minimal runout and smooth operation. The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 31,000 rpm.
Durability & Maintenance: Constructed from chrome steel for both rings and balls, the bearing offers high wear resistance. It comes sealed and pre-lubricated with grease, providing long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S71913 ACD/P4ADBC Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision and rigidity are critical, including:
- Machine Tool Spindles
- High-Speed Precision Drives
- Industrial Pumps and Compressors
- Robotic Actuators and Precision Gearboxes
