71922 ACD/HCP4ATGA
Hybrid Ceramic Super Precision Bearings
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71922 ACD/HCP4ATGA Bearing Product Overview & Core Advantages
The 71922 ACD/HCP4ATGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This universal matchable bearing is supplied in a set of three, allowing for flexible mounting configurations to handle combined loads efficiently. Its defining features include a P4A super-precision tolerance class, a phenolic resin cage for high-speed operation, and ceramic balls that reduce centrifugal forces and thermal expansion. This combination delivers superior high-speed performance, extended service life, and reliable operation in high-accuracy spindles and machinery.
71922 ACD/HCP4ATGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71922 | Basic bearing series and size designation | Indicates a light series bearing with a 110mm bore, 150mm OD, and 60mm width. |
| ACD | 25° Contact Angle | Optimized for carrying significant axial loads in one direction and radial loads. |
| HC | Hybrid Ceramic | Features ceramic balls for reduced weight, lower friction, and superior high-speed capability. |
| P4A | Tolerance Class | Denotes super-precision tolerances for running accuracy, essential for high-performance spindles. |
| TGA | Cage Type & Preload | Phenolic cage (T) and Extra Light preload (A). The cage ensures high-speed stability. |
71922 ACD/HCP4ATGA Bearing Structural Features & Performance Benefits
Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and ceramic balls significantly reduces centrifugal forces and inertial mass. This allows the bearing to achieve its high limiting speed of 16,000 rpm with minimal heat generation and wear.
Exceptional Rigidity and Load Capacity: The 25° contact angle and robust internal geometry are designed to handle substantial combined radial and axial loads (Dynamic: 28,575 lbf, Static: 45,900 lbf). This provides a rigid support system that minimizes deflection under load.
Ultra-Precision Operation: Manufactured to P4A tolerance class with tight dimensional control on the bore, outside diameter, and width, this bearing ensures exceptional running accuracy and minimal vibration, which is critical for applications like machine tool spindles.
Universal Matchability (SU): Supplied as a universal matchable set, these bearings can be arranged in back-to-back, face-to-face, or tandem configurations. This flexibility allows engineers to tailor the bearing setup to achieve the desired preload and stiffness for the specific application.
71922 ACD/HCP4ATGA Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- High-Frequency Machine Tool Spindles: For milling, grinding, and drilling centers.
- Precision Robotics: In high-accuracy robotic arms and joints.
- Aerospace & Defense Systems: In gyroscopes, radar systems, and other precision instruments.
- High-Speed Motors and Turbines: Where extreme rotational speeds are required.
