S7012 ACE/P4ADBC
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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S7012 ACE/P4ADBC Bearing Product Overview & Core Advantages
The S7012 ACE/P4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and rotational accuracy. This matched pair features a back-to-back (DB) arrangement with a moderate preload (Class C), enabling it to support significant combined loads—simultaneously handling radial forces and axial loads from both directions. Manufactured to P4A tolerance class, it delivers superior running accuracy and is pre-lubricated with grease for long-term, maintenance-free operation, making it ideal for high-speed, high-rigidity spindles and precision machinery.
S7012 ACE/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S7012 | Basic bearing designation (60mm bore, 95mm OD, 36mm width) |
| ACE | 25° contact angle and optimized internal design |
| P4A | High precision tolerance class (exceeds ABEC 7) |
| DB | Duplex Back-to-Back mounting arrangement |
| C | Moderate preload level for enhanced rigidity |
S7012 ACE/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads. With a 25° contact angle and moderate preload, this bearing pair provides excellent stability and can support substantial combined radial and axial loads in both directions.
Precision & High-Speed Performance: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration. The phenolic cage and optimized internal geometry contribute to smooth operation at the specified limiting speed of 31,000 rpm.
Durability & Maintenance-Free Operation: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance. Being sealed and pre-lubricated with grease, it operates reliably across a temperature range of -30°C to 110°C without requiring relubrication in many applications.
S7012 ACE/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles - High-speed milling, grinding, and turning centers
- Precision Spindles - PCB drilling, engraving machines, and semiconductor equipment
- High-Frequency Motors - Spindle motors and high-RPM industrial drives
- Robotics - Precision joints and rotary actuators requiring high rigidity
- Medical Equipment - Dental handpieces and laboratory instrumentation
