S7012 ACB/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 ACB/P4A Bearing Product Overview & Core Advantages
The S7012 ACB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing is distinguished by its 25° contact angle and P4 (ABEC-7) tolerance class, enabling it to handle significant combined loads—both radial and axial—simultaneously. Its preload availability ensures minimal axial and radial play, resulting in superior system stiffness, precise shaft positioning, and smooth operation at high speeds. The phenolic resin cage and factory-applied lubrication contribute to its high-performance capabilities in high-speed and high-reliability scenarios.
S7012 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7012 | Basic bearing series and size designation. |
| ACB | Angular Contact Bearing design with a specific contact angle and internal design. |
| P4A | Indicates a P4 (ABEC-7) tolerance class and a specific internal clearance/geometry group for preload matching. |
S7012 ACB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 25° contact angle and P4 precision grade provide excellent resistance to deflection under load, ensuring high system stiffness and accurate rotational performance.
- Superior Load Capacity: Engineered to support substantial combined radial and axial loads, making it ideal for applications with complex loading conditions.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and effective lubrication allow for a high limiting speed of 17,000 rpm.
- Sealed and Lubricated for Life: As a sealed bearing pre-filled with high-quality grease, it is protected from contamination and is effectively maintenance-free within its specified operating conditions and temperature range.
- Durable Construction: Manufactured from chrome steel for both rings and balls, ensuring high durability and a long service life.
S7012 ACB/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Aerospace and Defense Actuation Systems
