7004 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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7004 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The 7004 ACEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and speed. Engineered to accommodate combined loads, it efficiently handles both radial and axial loads in one direction. Its P4A tolerance class ensures ultra-precision, while the ceramic ball material and phenolic cage contribute to superior high-speed performance and reduced heat generation. This bearing is pre-lubricated and features an open design, making it ideal for high-reliability systems where precision and speed are critical.
7004 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7004 | Basic bearing series, indicating a 20mm bore, 42mm OD, and 12mm width. |
| A | Contact angle of 25°, optimized for high axial load capacity. |
| CE | Indicates Ceramic balls (Silicon Nitride), offering high-speed capability and electrical insulation. |
| GA | Specifies Extra Light Preload (Class A), minimizing friction and heat at high speeds. |
| HC | Refers to the Phenolic Resin Cage, providing lightweight construction and excellent high-speed stability. |
| P4A | Denotes a super precision tolerance class, ensuring minimal runout and vibration for ultra-precise applications. |
7004 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & High-Rigidity Design: The combination of ceramic balls and a lightweight phenolic cage significantly reduces centrifugal forces, enabling a high limiting speed of 103,000 rpm. The 25° contact angle provides excellent axial rigidity and load support.
Superior Load Capacity: Engineered as an angular contact bearing, it is designed to handle significant combined (radial and axial) loads, with a dynamic load rating of 1609 lbf and a static load rating of 731 lbf.
Precision Engineering: Manufactured to P4A tolerance standards with tight bore and OD tolerances, this bearing guarantees exceptional running accuracy, making it suitable for the most demanding precision applications.
Universal Matching Capability (SU): This bearing is universally matchable, allowing two bearings to be paired in a duplex set (back-to-back or face-to-face) to accommodate complex load conditions without additional machining or selection.
7004 ACEGA/HCP4A Bearing Typical Application Areas
The 7004 ACEGA/HCP4A is ideally suited for high-performance machinery and systems, including:
- High-Speed Machine Tool Spindles
- Precision Grinding & Milling Applications
- Robotic Arm & Actuator Drives
- Aerospace & Defense Instrumentation
- Semiconductor Manufacturing Equipment
- High-Frequency Motors & Turbomachinery
