71911 CE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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71911 CE/HCP4ADT Bearing Product Overview & Core Advantages
The 71911 CE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) matched set features a P4A tolerance class and is preloaded, delivering superior rotational accuracy, high system rigidity, and reliable operation under combined loads. Its optimized design, utilizing ceramic balls and a phenolic cage, enables outstanding high-speed capabilities and extended service life, making it an ideal solution for high-precision spindles and machinery.
71911 CE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71911 | Bearing series and size designation (55mm bore, 80mm OD, 26mm width) |
| CE | Contact angle of 15° |
| HC | Hybrid Ceramic (Silicon Nitride balls) |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DT | Duplex Tandem arrangement (two bearings mounted in tandem for increased axial load capacity in one direction) |
71911 CE/HCP4ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem arrangement and preload create an exceptionally rigid bearing system, capable of handling significant combined radial and axial loads with minimal deflection.
Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage reduces centrifugal forces and friction, enabling a high limiting speed of 34,000 rpm. The 15° contact angle is optimized for high-speed operation.
Enhanced Durability & Temperature Resistance: Ceramic balls offer superior hardness, lower thermal expansion, and electrical insulation compared to steel, leading to reduced wear and a wider operating temperature range (-30°C to 110°C).
Precision Engineering: Manufactured to a P4A tolerance class with tight bore and outside diameter tolerances, this bearing ensures precise shaft positioning and smooth, quiet running essential for precision applications.
71911 CE/HCP4ADT Bearing Typical Application Areas
The 71911 CE/HCP4ADT is engineered for high-performance machinery where speed, precision, and reliability are critical. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Dental and Medical Handpieces
- Aerospace Instrumentation
