S7012 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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S7012 CD/P4ADGA Bearing Product Overview & Core Advantages
The S7012 CD/P4ADGA is a high-precision double row angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to simultaneously handle combined radial and axial loads from both directions, this bearing features a universal matchable (SU) design and extra light preload (Class A) for optimal performance in high-speed spindle arrangements. Its compact design, sealed construction, and P4A tolerance class make it an ideal solution for machine tools and other high-reliability precision equipment.
S7012 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7012 | Basic bearing series and size designation |
| CD | 15° contact angle and specific internal design |
| P4A | High precision tolerance class exceeding ABEC 7 |
| DGA | Universal matchable (SU) pairing designation |
S7012 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design provides superior rigidity and can handle significant combined radial and axial loads in both directions, making it suitable for complex loading conditions.
Precision Performance: Manufactured to P4A tolerance class with extremely tight dimensional tolerances (bore/OD: -0.004mm to 0), ensuring minimal runout and vibration for high-precision applications.
Optimized High-Speed Operation: The phenolic resin cage and 15° contact angle contribute to stable operation at high speeds, with a limiting speed of 31,000 rpm. The extra light preload (Class A) minimizes friction and heat generation.
Sealed & Lubricated for Life: As a sealed bearing pre-filled with grease, it offers protection against contamination and is effectively maintenance-free within its specified temperature range of -30°C to 110°C.
S7012 CD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers, grinding spindles
- Precision Industrial Equipment - PCB drilling machines, precision measuring instruments
- High-Speed Rotating Machinery - Turbines, compressors, and pumps
- Robotics & Automation - High-precision robotic joints and positioning systems
- Aerospace & Defense - Gyroscopes, navigation systems, and radar equipment
