S7012 ACE/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7012 ACE/P4A Bearing Product Overview & Core Advantages
The S7012 ACE/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to a P4 (ABEC-7) tolerance class, it delivers superior running precision. Its key advantage lies in its ability to support combined loads—significant radial loads alongside high unidirectional axial loads—thanks to its specific 25° contact angle. This bearing is preloaded and lubricated from the factory, ensuring high rigidity, smooth operation, and immediate readiness for installation in high-speed and high-rigidity spindle arrangements.
Model Code Breakdown
- S7012: Basic model number denoting a 60 mm bore, 95 mm OD, and 18 mm width.
- ACE: Internal design suffix. 'A' indicates a 25° contact angle and optimized internal geometry for high performance. 'CE' signifies specific internal clearance and preload characteristics.
- P4A: P4 denotes the tolerance class (equivalent to ABEC-7), ensuring extremely tight dimensional and running accuracy. The 'A' suffix indicates a specific preload grouping for consistent performance when used in matched sets.
S7012 ACE/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: Manufactured to P4 precision standards with a phenolic resin cage, this bearing ensures minimal vibration and high running accuracy, which is critical for machine tool spindles.
Superior Load Capacity: The 25° contact angle and robust construction enable it to handle high combined radial and axial loads simultaneously, providing stable and reliable support.
Optimized High-Speed Performance: The lightweight phenolic cage and high-quality steel components contribute to a high limiting speed of 18,000 rpm, making it suitable for high-speed applications.
Ready-to-Use & Sealed: The bearing comes sealed and pre-lubricated, protecting against contamination and providing long-term, maintenance-free operation within its specified temperature range.
S7012 ACE/P4A Bearing Typical Application Areas
The S7012 ACE/P4A is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles (e.g., CNC machining centers, grinding spindles)
- High-Frequency Motors
- Precision Robotic Drives
- High-Speed Pumps and Compressors
