7004 FE/HCP4ADGAGMM0
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7004 FE/HCP4ADGAGMM0 Bearing Product Overview & Core Advantages
The 7004 FE/HCP4ADGAGMM0 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered as a universally matchable (SU) bearing in a set of two, it delivers superior rigidity and can accommodate combined radial and axial loads. Featuring ceramic balls and P4A super precision tolerances, this bearing offers high-speed capability, reduced friction, and extended service life in critical machinery.
Model Code Detailed Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7004 | Basic bearing series, 20mm bore, 42mm OD, 24mm width |
| FE | Precision design and manufacturing specifications |
| HCP4A | P4A tolerance class - super precision grade |
| DG | Universal matchable (SU) designation |
| AG | Contact angle specification (18°) |
| MM0 | Special manufacturing process indicator |
7004 FE/HCP4ADGAGMM0 Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The angular contact design with 18° contact angle provides optimal load distribution, enabling the bearing to handle both radial and axial loads simultaneously. The universal matching capability allows for precise preload control when mounted in pairs, significantly increasing system rigidity.
High-Speed Performance: Utilizing ceramic balls (Si3N4) reduces centrifugal forces and provides superior high-speed capability up to 121,000 rpm. The phenolic cage ensures smooth operation at extreme speeds while maintaining dimensional stability.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore: -0.004mm to 0, OD: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
Advanced Material Selection: The combination of chrome steel rings with ceramic balls reduces friction, minimizes heat generation, and provides excellent wear resistance in demanding operating conditions.
7004 FE/HCP4ADGAGMM0 Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- High-Speed Motors - Industrial spindles and servo motors requiring extreme precision
- Medical Equipment - Dental handpieces and surgical tool drives
- Aerospace Systems - Guidance systems and auxiliary power units
- Semiconductor Manufacturing - Wafer handling robots and precision positioning stages
- Test & Measurement Equipment - Coordinate measuring machines and optical instruments
