7012 ACDTP/HCP4B
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 ACDTP/HCP4B Bearing Product Overview & Core Advantages
The 7012 ACDTP/HCP4B is a high-precision angular contact ball bearing engineered 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, making it ideal for high-speed spindles and precision machinery. Its core advantages include the ability to accommodate combined radial and axial loads simultaneously, superior high-speed performance facilitated by its phenolic cage and ceramic balls, and availability with preload for enhanced system stiffness and reduced vibration.
7012 ACDTP/HCP4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7012 | Standard bearing series number (60mm bore, 95mm OD, 18mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| DTP | Indicates a duplex (tandem) pair configuration, mounted and preloaded by the manufacturer. |
| HC | Refers to the Hybrid Ceramic construction (steel rings with ceramic balls). |
| P4 | Specifies the P4 (ABEC-7) tolerance class for ultra-precision operation. |
| B | Indicates a 40° contact angle (Note: This may be a conflict with the provided 25°; please verify specifications). |
7012 ACDTP/HCP4B Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The use of silicon nitride ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds compared to all-steel bearings. This construction also provides superior resistance to wear and electrical arcing.
Phenolic Cage: The lightweight and robust phenolic resin cage ensures excellent dimensional stability and low friction at high speeds, contributing directly to the bearing's high-speed capability of 15,000 rpm.
Precision & Rigidity: Manufactured to P4 tolerance class and supplied as a preloaded duplex pair (DTP), this bearing set delivers maximum system rigidity, precise running accuracy, and minimal axial/radial runout.
Load Capacity: The 25° contact angle is optimized to handle significant combined loads, with a high dynamic load rating of 8775 lbf and a static load rating of 7538 lbf.
7012 ACDTP/HCP4B Bearing Typical Application Areas
This high-performance bearing is ideally suited for applications where high speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy actuators.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units.
- High-Frequency Motors and Spindles: For PCB drilling and dental handpieces.
