S71914 ACB/HCP4AQGA
Hybrid Ceramic Super Precision Bearings
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S71914 ACB/HCP4AQGA Bearing Product Overview & Core Advantages
The S71914 ACB/HCP4AQGA is a super-precision angular contact ball bearing engineered for the most demanding applications. This matched set of four bearings is designed to handle combined loads (radial and axial) simultaneously, offering exceptional rotational accuracy and system rigidity. Its construction with a ceramic ball and phenolic cage enables superior high-speed performance and thermal stability. Pre-loaded and pre-lubricated, this bearing is ready for installation, providing a compact, high-reliability solution for advanced machinery.
S71914 ACB/HCP4AQGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S | Super Precision | Indicates a bearing manufactured to extremely tight dimensional and running accuracy tolerances. |
| 71914 | Basic Bearing Series & Size | Denotes a 70mm bore, 100mm OD, high-precision angular contact bearing series. |
| ACB | Contact Angle & Preload | A 25° contact angle with an Extra Light (Class A) preload for optimal stiffness and speed. |
| HCP4A | Internal Design & Tolerance | Specific internal geometry and a P4A tolerance class, exceeding ABEC 7/ISO P4 standards. |
| QGA | Grease & Cage Specification | Specifies the use of a phenolic cage and a specific high-performance grease fill. |
S71914 ACB/HCP4AQGA Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The 25° contact angle and the use of a matched set of four bearings create an exceptionally rigid system capable of supporting significant combined radial and axial loads.
Superior High-Speed Performance: The combination of ceramic (Si3N4) balls and a lightweight phenolic resin cage reduces centrifugal forces, lowers operating temperature, and allows for a very high limiting speed of 22,000 rpm.
Enhanced Durability and Longevity: Ceramic balls are harder, lighter, and more resistant to wear and corrosion than steel, significantly extending bearing service life, especially in challenging environments.
Precision and Thermal Stability: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration. The phenolic cage offers excellent dimensional stability across the operating temperature range.
S71914 ACB/HCP4AQGA Bearing Typical Application Areas
This super-precision bearing is ideally suited for high-performance machinery where accuracy, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotic Drives: Articulated arms and high-accuracy gearboxes.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and flight control actuators.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
