7012 ACD/HCP4A
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
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7012 ACD/HCP4A Bearing Product Overview & Core Advantages
The 7012 ACD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied with a preload, making it ideal for supporting combined radial and axial loads in a single direction. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance and thermal stability. Manufactured to P4 (ABEC-7) tolerance, it guarantees minimal runout and vibration, ensuring reliability in the most demanding precision machinery.
7012 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7012 | Basic bearing series, indicating a 60 mm bore, 95 mm OD, and 18 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a high preload for maximum rigidity and precise shaft positioning. |
| HCP4A | Indicates the bearing is supplied lubricated and is manufactured to a P4 tolerance class (ABEC-7). |
7012 ACD/HCP4A Bearing Structural Features & Performance Benefits
Optimized for High-Speed and High Rigidity: The combination of ceramic (Si3N4) balls and a lightweight phenolic resin cage significantly reduces centrifugal forces, enabling a high limiting speed of 24,000 rpm. This design also provides excellent dimensional stability under thermal loads.
Superior Load Capacity: The 25° contact angle and preload are optimized to handle significant combined loads, offering high resistance to both radial and single-direction axial forces.
Precision Engineering: Manufactured to P4 tolerance with tight dimensional controls on the bore diameter, outside diameter, and width, this bearing ensures minimal vibration and precise rotational accuracy for critical applications.
Ready-to-Install: The bearing is pre-lubricated, simplifying installation and ensuring immediate, optimal performance from startup.
7012 ACD/HCP4A Bearing Typical Application Areas
The 7012 ACD/HCP4A is ideally suited for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- High-Frequency Motors and Spindles: For PCB drilling and semiconductor manufacturing equipment.
