71911 CE/HCPA9ADGA
Hybrid Ceramic Super Precision Bearings
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71911 CE/HCPA9ADGA Bearing Product Overview & Core Advantages
The 71911 CE/HCPA9ADGA is a precision angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. This universal matchable (SU) bearing is designed to accommodate combined loads—simultaneously handling radial loads and axial loads in one direction—making it ideal for high-precision arrangements. Its construction with a phenolic cage and ceramic balls enables superior high-speed performance, while the PA9A tolerance class ensures extremely tight dimensional control for optimal system rigidity and minimal runout.
71911 CE/HCPA9ADGA Bearing Model Code Explained, Specifications & Naming Convention
| 71911 | Basic bearing series and size designation (55mm bore, 80mm OD, 26mm width) |
| CE | Contact angle of 15° |
| HC | Hybrid ceramic balls for enhanced speed capability and reduced friction |
| PA9A | Ultra-precision tolerance class with extremely tight dimensional control |
| DGA | Universal matchable (SU) designation for paired mounting arrangements |
71911 CE/HCPA9ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of ceramic balls with steel rings provides superior high-speed capability, reduced friction, and extended service life compared to all-steel designs. The lower density of ceramic balls reduces centrifugal forces, enabling operation at the limiting speed of 34,000 rpm.
Precision Engineering: Manufactured to PA9A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, this bearing ensures exceptional dimensional stability and minimal runout for applications requiring the highest levels of precision.
Optimized Cage Design: The phenolic cage offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the bearing's overall high-speed performance and reliability.
Universal Matchability: As a universal matchable (SU) bearing, the 71911 CE/HCPA9ADGA can be paired with another identical bearing in various configurations to accommodate complex load requirements while maintaining preload control.
71911 CE/HCPA9ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional rigidity and accuracy
- High-Speed Motors: Electric motors and generators operating at elevated speeds where ceramic hybrid technology provides advantages
- Aerospace Systems: Critical rotating components in aircraft auxiliary systems and instrumentation
- Medical Equipment: High-speed dental handpieces and surgical tools demanding precision and reliability
- Semiconductor Manufacturing: Precision positioning systems and wafer handling equipment
