S71912 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71912 CDGA/P4A Bearing Product Overview & Core Advantages
The S71912 CDGA/P4A is a super-precision double row angular contact ball bearing designed for applications demanding exceptional accuracy, high rigidity, and reliable performance. Its compact design with a 60 mm bore and 13 mm width offers a space-saving solution. This bearing is engineered to simultaneously support combined radial and bidirectional axial loads, making it ideal for high-speed spindles and other high-precision machinery where rotational accuracy and system stability are paramount.
S71912 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| 719 | High-precision angular contact ball bearing series |
| 12 | Bore diameter code (60 mm) |
| C | 15° contact angle |
| DG | Universal Matchable (SU) bearing pair |
| A | Extra light preload (Class A) |
| P4A | Tolerance class P4A, denoting very high running accuracy |
S71912 CDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides superior radial and axial rigidity, enabling the bearing to handle significant combined loads from multiple directions. This ensures minimal deflection under operational stresses.
Super-Precision & High-Speed Performance: Manufactured to P4A tolerance class with a phenolic cage, this bearing achieves extremely low noise and vibration levels. The optimized internal geometry and cage design contribute to a high limiting speed of 32,500 rpm, making it an excellent high-speed bearing.
Optimized for Precision Applications: The 15° contact angle and universal matchable (SU) designation mean two bearings can be paired to achieve precise preload and axial stiffness, which is critical for applications like machine tool spindles.
Sealed & Pre-Lubricated: As a sealed bearing type, it is pre-lubricated with grease, protecting the precision internals from contamination and providing long-term, maintenance-free operation within its specified temperature range.
S71912 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instruments: Measuring and testing equipment requiring high rotational accuracy.
- High-Frequency Motors & Spindles: Applications where minimal runout and high rigidity are essential.
- Robotics: Precision joints and arm assemblies.
