71904 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 71904 CE/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universal matchable bearing features a ceramic ball construction and P4A super-precision tolerance, making it ideal for applications requiring high rigidity, high-speed operation, and superior reliability. Its design enables it to handle combined loads efficiently, accommodating both radial and axial loads simultaneously.
71904 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71904 | Basic bearing series and size designation (20mm bore, 37mm OD, 18mm width) |
| CE | Contact angle of 15° |
| HC | Hybrid Ceramic balls (Silicon Nitride) |
| P4A | Super precision tolerance class (equivalent to ABEC 7) |
| DGA | Universal matchable bearing (can be paired in any combination) |
Structural Features and Performance Benefits
Hybrid Ceramic Construction: The use of ceramic balls provides significant advantages including reduced friction, higher speed capability, and extended service life compared to all-steel bearings. Ceramic balls are electrically insulating and have superior resistance to wear and thermal deformation.
Precision Engineering: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, critical for high-precision applications. The phenolic cage contributes to smooth operation at high speeds while providing excellent dimensional stability.
Universal Matching Capability: As a universal matchable bearing, the 71904 CE/HCP4ADGA can be paired with another identical bearing in any combination (face-to-face, back-to-back, or tandem) without requiring selective matching, simplifying installation and inventory management.
Optimized Load Capacity: With a 15° contact angle and extra light preload, this bearing delivers excellent performance under combined radial and axial loads while maintaining low operating torque and minimal heat generation.
71904 CE/HCP4ADGA Bearing Typical Application Areas
- High-speed machine tool spindles and precision machining centers
- Medical equipment and dental handpieces requiring sterile operation
- Aerospace components and navigation systems
- Semiconductor manufacturing equipment and cleanroom applications
- High-frequency motors and precision robotics
- Laboratory and analytical instruments requiring minimal vibration
