S71912 ACD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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S71912 ACD/P4ADGA Bearing Product Overview & Core Advantages
The S71912 ACD/P4ADGA is a high-precision double row angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered to simultaneously handle combined radial and axial loads from both directions, this bearing features a compact design that saves space. Its P4A tolerance class and universal matchable (SU) designation ensure superior running accuracy and simplified mounting in preloaded arrangements, making it an ideal choice for high-rigidity, high-speed spindles and precision machinery.
S71912 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance & Advantage |
|---|---|---|
| S71912 | Basic bearing designation | Denotes a double row angular contact ball bearing with a 60mm bore, 85mm OD, and 26mm width. |
| ACD | Contact Angle & Design | Specifies a 25° contact angle, optimized for supporting significant axial loads. |
| P4A | Tolerance Class | Indicates a super-precision grade with extremely tight dimensional and running accuracy tolerances. |
| DGA | Universal Matching & Preload | Signifies the bearing is Universal Matchable (SU) and comes with an Extra Light (Class A) preload for high rigidity and minimal runout. |
S71912 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The double row design provides a significantly stiffer support structure compared to single row bearings, enabling it to handle substantial combined loads with high stability. The 25° contact angle is specifically engineered for optimal axial load carrying capacity.
Superior High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 36,000 rpm. This makes the bearing exceptionally suitable for demanding high-speed applications.
Precision and Longevity: Manufactured to P4A tolerance class with chrome steel rings and balls, this bearing guarantees exceptional running accuracy and long service life. The universal matchable (SU) feature allows any two bearings to be mounted together without selective matching, simplifying installation and ensuring consistent preload.
S71912 ACD/P4ADGA Bearing Typical Application Areas
The S71912 ACD/P4ADGA is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for electric motors requiring ultra-high rotational speeds.
- Robotics: High-accuracy joints and rotary actuators.
