S71922 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71922 ACE/HCP4A Bearing Product Overview & Core Advantages
The S71922 ACE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a single-row bearing with a 25° contact angle, it is optimized to handle combined loads (simultaneous radial and axial loads) efficiently. Its defining characteristics include a P4 (ABEC-7) tolerance class for superior running accuracy, a phenolic resin cage for high-speed capability, and ceramic balls that reduce weight and centrifugal forces, enabling higher limiting speeds and extended service life. This bearing is preloaded and comes pre-lubricated, making it a ready-to-install solution for high-rigidity, high-reliability systems.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| 719 | Indicates a high-precision angular contact ball bearing series. |
| 22 | Specifies the bore diameter code (110 mm). |
| ACE | Signifies a 25° contact angle and a specific internal design optimized for high-speed operation and stiffness. |
| HC | Denotes the use of hybrid ceramic balls (silicon nitride). |
| P4A | Specifies the P4 (ABEC-7) tolerance class and likely indicates a specific preload level (A). |
S71922 ACE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration, which is critical for precision spindles. The preload eliminates internal clearance, significantly increasing system stiffness and rotational accuracy.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and hybrid ceramic balls drastically reduces centrifugal forces and operating temperatures. This allows the bearing to achieve a high limiting speed of 12,300 rpm.
- Enhanced Load Capacity: The 25° contact angle is optimally designed to handle substantial axial loads in one direction while also supporting significant radial loads, making it ideal for combined load applications.
- Long Service Life and Reliability: Ceramic balls are harder and smoother than steel, leading to reduced wear. They are also electrically insulating and resistant to corrosion, contributing to exceptional durability and reliability in challenging environments.
- Sealed and Lubricated: The sealed design protects the bearing from contaminants, and it is supplied pre-lubricated, ensuring optimal performance from the first rotation and reducing maintenance requirements.
S71922 ACE/HCP4A Bearing Typical Application Areas
The S71922 ACE/HCP4A is designed for high-performance machinery where precision, speed, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Motors for CNC machinery and PCB drilling.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
