7012 ACD/HCP4ADT
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7012 ACD/HCP4ADT Bearing Product Overview & Core Advantages
The 7012 ACD/HCP4ADT is a precision angular contact ball bearing configured as a Duplex Tandem (DT) matched set. Engineered for applications demanding exceptional accuracy and rigidity, this bearing is preloaded and manufactured to a P4A super-precision tolerance class. Its core advantage lies in its ability to handle high axial loads in a single direction with maximum stiffness, making it an ideal choice for high-speed spindles and other precision machinery where positional accuracy is paramount. The use of ceramic balls further enhances its performance by reducing centrifugal forces, enabling higher limiting speeds, and providing superior operation in demanding conditions.
7012 ACD/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7012 | Basic bearing series and size designation (60mm bore, 95mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates a Duplex (two-bearing) set. |
| HC | Refers to the Hybrid Ceramic construction (steel rings with ceramic balls). |
| P4A | Denotes a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DT | Specifies the Duplex Tandem mounting arrangement, where two bearings are matched to share axial loads in the same direction. |
7012 ACD/HCP4ADT Bearing Structural Features & Performance Benefits
- Maximum Rigidity & Axial Load Capacity: The Duplex Tandem (DT) arrangement combines two bearings to provide exceptional stiffness and the highest possible capacity for unidirectional axial loads. This configuration is essential for applications requiring minimal axial deflection under heavy loads.
- High-Speed Performance: The combination of a lightweight phenolic cage and ceramic (Si3N4) balls significantly reduces rotating mass and centrifugal force. This allows for a higher limiting speed (39,000 rpm) and lower operating temperatures compared to all-steel equivalents.
- Precision & Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and superior rotational accuracy, which is critical for the performance of machine tool spindles and other high-precision equipment.
- Preloaded & Ready-to-Mount: The set is supplied preloaded, eliminating internal clearance and ensuring immediate, precise performance upon installation without requiring complex adjustment.
7012 ACD/HCP4ADT Bearing Typical Application Areas
- High-Speed Machine Tool Spindles (Milling, Grinding, Drilling)
- Precision CNC Machining Centers
- High-Frequency Routing & Spindles
- High-Performance Dental & Medical Handpieces
- Advanced Robotics & Automation (Precision rotary joints and axes)
