71803 ACDGA/HCP4
Hybrid Ceramic Super Precision Bearings
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71803 ACDGA/HCP4 Bearing Product Overview & Core Advantages
The 71803 ACDGA/HCP4 is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. This single bearing features a 25° contact angle and Extra Light (Class A) preload, making it ideal for high-rigidity applications requiring minimal deflection under load. Manufactured to P4 tolerance class with ceramic balls and phenolic cage, it delivers superior rotational accuracy, reduced friction, and extended service life in demanding operational environments.
71803 ACDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| AC | Angular Contact Design | Optimized for combined radial and axial loads |
| DGA | Universal Matchable (SU) bearing | Can be paired for duplex arrangements without selective mounting |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Higher speed capability, reduced friction, and longer life |
| P4 | Precision Tolerance Class | Exceptional running accuracy and dimensional stability |
71803 ACDGA/HCP4 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (103,000 rpm) compared to all-steel equivalents. The phenolic resin cage provides excellent dimensional stability at high speeds while reducing weight.
Precision Engineering: Manufactured to P4 tolerance class with tight dimensional controls on bore diameter (17mm), outside diameter (26mm), and width (5mm), ensuring consistent performance in precision applications. The 25° contact angle and Class A preload deliver optimal stiffness and minimal runout under combined loading conditions.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be paired with identical bearings in back-to-back, face-to-face, or tandem arrangements without selective mounting, simplifying installation and maintenance.
71803 ACDGA/HCP4 Bearing Typical Application Areas
- High-Speed Machine Tool Spindles - CNC machining centers, grinding spindles
- Precision Medical Equipment - Dental handpieces, surgical tools
- Aerospace Components - Guidance systems, instrumentation
- Semiconductor Manufacturing - Wafer handling robots, precision stages
- Laboratory & Analytical Instruments - Centrifuges, precision measuring devices
