7012 ACE/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7012 ACE/P4ADBB Bearing Product Overview & Core Advantages
The 7012 ACE/P4ADBB is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This metric bearing features a Back-to-Back (DB) matched arrangement and a Light preload (Class B), enabling it to handle significant combined loads—simultaneous radial and axial forces—with high stability. Its P4A tolerance class ensures superior running accuracy, making it ideal for high-speed, high-precision machinery where reliability is critical.
7012 ACE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7012 | Basic bearing series and size designation (60mm bore, 95mm OD, 36mm width) |
| ACE | Angular Contact design with a 25° contact angle |
| P4A | High precision tolerance class for superior running accuracy |
| DB | Duplex Back-to-Back mounting arrangement |
| B | Light preload classification |
7012 ACE/P4ADBB 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 and provides exceptional stability under combined radial and axial loads. With a dynamic load rating of 5850 lbf and static load rating of 5512 lbf, this bearing delivers reliable performance in demanding applications.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration. The 25° contact angle optimizes axial load carrying capacity while maintaining good radial performance.
High-Speed Capability: Featuring a phenolic resin cage and optimized internal geometry, this bearing achieves a limiting speed of 33,000 rpm. The lightweight cage material reduces centrifugal forces, enabling stable operation at high rotational speeds.
Material Excellence: Constructed from chrome steel for both rings and balls, this bearing offers excellent wear resistance and durability. The 25 precision balls with 7.938 mm diameter ensure smooth operation and load distribution.
7012 ACE/P4ADBB Bearing Typical Application Areas
The 7012 ACE/P4ADBB is ideally suited for precision applications requiring high speed, accuracy, and rigidity, including:
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Motors - Spindle motors and servo drives
- Robotics - Precision joints and rotary axes
- Aerospace Components - Guidance systems and precision mechanisms
