7012 CE/HCP4ADBA
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 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 7012 CE/HCP4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and running accuracy. This back-to-back (DB) matched set features an Extra Light (Class A) preload, making it ideal for high-speed spindles and other precision machinery. Its construction with ceramic balls and a phenolic cage enables superior performance, including reduced friction, lower operating temperatures, and extended service life under demanding conditions. This bearing is engineered to handle combined loads efficiently, providing high rigidity and rotational precision.
7012 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7012 | Basic bearing designation indicating a metric series angular contact ball bearing with a 60mm bore, 95mm OD, and 36mm width. |
| C | Designates a 15° contact angle, optimized for high-speed applications and moderate axial loads. |
| E | Indicates an optimized internal design for enhanced performance. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), offering advantages in high-speed and high-temperature applications. |
| P4A | Denotes a high precision tolerance class (equivalent to ABEC 7 / ISO P4), ensuring extremely tight dimensional and running accuracy. |
| DB | Specifies a Duplex Back-to-Back mounting arrangement, which provides high moment rigidity and excellent stability. |
| A | Indicates the specific preload level: Extra Light (Class A). |
7012 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back (DB) duplex arrangement creates a wide effective spread of the load-carrying balls, significantly increasing the bearing's resistance to moment loads and providing exceptional operational stiffness.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls reduces centrifugal forces and friction, enabling a high limiting speed of 34,000 rpm and smoother operation.
- Enhanced Durability and Life: Hybrid ceramic balls are harder, lighter, and more resistant to wear and degradation than steel, leading to a longer operational life, especially in contaminated or poorly lubricated environments.
- Precision & Accuracy: Manufactured to P4A tolerance class with a defined preload, this bearing ensures minimal runout and consistent, precise rotational performance critical for high-accuracy applications.
7012 CE/HCP4ADBA Bearing Typical Application Areas
The 7012 CE/HCP4ADBA is engineered for high-performance applications where precision, speed, 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 rotary axes.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Frequency Motors and Spindles: Used in PCB drilling, dental handpieces, and small precision motors.
