7004 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
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7004 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 7004 CE/HCP4ADBA is a high-precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This metric system bearing features a back-to-back (DB) matched arrangement, providing superior stability and the ability to withstand combined radial and axial loads. Manufactured to an ultra-precise P4A tolerance class and preloaded to Extra Light (Class A), it delivers optimal performance in high-speed, high-rigidity scenarios. The combination of a phenolic cage and ceramic balls significantly enhances its high-speed capabilities and service life.
7004 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7004 | Basic bearing series, indicating a 20mm bore, 42mm OD, and 24mm width. |
| C | Designates a 15° contact angle. |
| E | Indicates an optimized internal design for higher load capacity and performance. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Denotes an ultra-high precision tolerance class, exceeding ABEC 7/ISO P4. |
| DB | Specifies the Duplex Back-to-Back mounting arrangement. |
| A | Indicates the preload level: Extra Light (Class A). |
7004 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread, providing maximum moment stiffness and excellent operational stability under complex loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic (Si3N4) balls reduce centrifugal forces, enabling a high limiting speed of 63,000 rpm. This hybrid construction also minimizes heat generation.
- Exceptional Load Capacity: The optimized internal geometry and 15° contact angle allow the bearing to efficiently support significant combined radial and axial loads (Dynamic: 2722 lbf, Static: 1508 lbf).
- Ultra-Precision Operation: Manufactured to P4A tolerance class with extremely tight dimensional runouts, this bearing ensures minimal vibration and superior running accuracy for critical applications.
- Pre-optimized for Performance: The bearings are supplied as a matched set with a defined Extra Light preload, eliminating the need for complex adjustment during installation and ensuring immediate, optimal performance.
7004 CE/HCP4ADBA Bearing Typical Application Areas
This high-performance bearing is engineered for the most demanding precision applications, including:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Dental and Medical Handpieces
- Aerospace Gyroscopes and Instrumentation
- Semiconductor Manufacturing Equipment
