71922 ACD/HCP4ALDGA
Hybrid Ceramic Super Precision Bearings
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71922 ACD/HCP4ALDGA Bearing Product Overview & Core Advantages
The 71922 ACD/HCP4ALDGA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. As a universally matchable (SU) bearing supplied in a pre-lubricated set of two, it is engineered to accommodate combined radial and axial loads simultaneously. Its P4A tolerance class and ceramic ball construction deliver superior running accuracy, low heat generation, and extended service life, making it ideal for high-speed, high-rigidity spindle systems.
71922 ACD/HCP4ALDGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD). |
| ACD | Contact Angle of 25° and a Universal Matchable (SU) design. |
| HC | Hybrid Ceramic construction, featuring ceramic balls. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| ALDGA | Specific internal design and preload designation: Extra Light (Class A) preload. |
71922 ACD/HCP4ALDGA Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The 25° contact angle and robust phenolic cage enable high rigidity, effectively managing significant combined loads from multiple directions.
Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a high limiting speed of 16,000 rpm, minimizing friction and heat buildup.
Enhanced Durability and Longevity: The hybrid ceramic construction provides excellent resistance to wear and is less susceptible to lubrication failure, contributing to a longer operational lifespan in high-speed applications.
Pre-optimized for Matched Sets: Supplied as a universally matchable pair (DB or DF arrangement) with extra light preload, this bearing ensures immediate, optimal stiffness and rotational accuracy upon installation without additional adjustment.
71922 ACD/HCP4ALDGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and auxiliary power units.
- High-Frequency Motors and Spindles: Where minimal runout and thermal stability are critical.
