S71922 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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S71922 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The S71922 ACEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. As a single bearing from a universally matchable (SU) set of three, it offers superior rigidity and running accuracy. Its key advantages include the ability to accommodate combined loads (radial and axial) simultaneously, facilitated by a 25° contact angle. Manufactured to a P4A tolerance class, it guarantees ultra-precise dimensions and minimal runout. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it an ideal choice for high-reliability, high-rotation accuracy scenarios.
S71922 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7 | Bearing Series | Indicates a high-precision angular contact ball bearing series. |
| 1922 | Size Code | Specifies the bearing dimensions: 110mm bore, 150mm OD, 20mm width. |
| AC | Contact Angle | 25° contact angle, optimized for supporting significant axial loads. |
| EGA | Preload & Cage | "E" denotes Extra light preload (Class A). "GA" indicates a Phenolic resin cage. |
| HC | Hybrid Ceramic | Signifies the use of ceramic balls (typically Silicon Nitride), reducing weight and friction. |
| P4A | Tolerance Class | Denotes an ultra-high precision bearing with extremely tight dimensional and running accuracy tolerances. |
S71922 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: Manufactured to P4A tolerance standards with a universal matchable design, this bearing provides exceptional rotational accuracy and system stiffness when mounted with its matched set, minimizing deflection under load.
Superior Load Capacity: The 25° contact angle is engineered to efficiently handle combined radial and axial loads. With a dynamic load rating of 8482 lbf, it is built for demanding performance.
Enhanced High-Speed Performance: The hybrid ceramic construction, featuring ceramic balls and a lightweight phenolic cage, significantly reduces centrifugal forces and friction. This allows for a high limiting speed of 10,000 rpm, with lower operating temperatures and reduced wear.
Pre-Lubricated and Sealed: The bearing comes sealed and pre-lubricated with grease, protecting against contamination and providing reliable, maintenance-free operation within its specified temperature range of -30°C to 110°C.
S71922 ACEGA/HCP4A Bearing Typical Application Areas
The S71922 ACEGA/HCP4A is ideally suited for high-precision, high-speed machinery where reliability and accuracy are paramount. Key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Instrumentation: In medical devices, optical scanners, and measuring equipment.
- High-Frequency Motors and Spindles: Used in PCB drilling, dental handpieces, and small turbochargers.
- Aerospace and Defense Systems: In gyroscopes, navigation systems, and other critical rotating assemblies.
