71915 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71915 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 71915 ACDGA/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single bearing features an extra light preload (Class A) and is manufactured to a P4A tolerance class, ensuring superior running accuracy and minimal vibration. Its 25° contact angle is optimized to handle significant combined loads—simultaneous radial and axial forces. The use of a phenolic cage and ceramic balls contributes to its high-speed capability, low friction, and extended service life, making it ideal for high-reliability, high-rotation applications.
71915 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71915 | Basic bearing series and size designation | Indicates a metric, 75mm bore, 105mm OD, 16mm width bearing. |
| AC | Angular Contact | Designed to support combined radial and axial loads. |
| D | High Ball Count & Contact Angle | Optimized internal geometry (25° contact angle, 26 balls) for high load capacity and rigidity. |
| GA | Universal Matchable (SU) with Light Preload | Bearing is universally matchable with other bearings of the same code. "A" denotes extra light preload for precise, low-friction operation. |
| HCP4A | Tolerance Class & Cage Material | "HC" indicates a phenolic cage. "P4A" specifies a super-precision tolerance class with enhanced dimensional and running accuracy. |
71915 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 25° contact angle and high ball count (26) provides excellent stiffness and the ability to handle demanding combined loads.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls reduces centrifugal forces, enabling a high limiting speed of 22,000 rpm.
- Exceptional Precision and Low Vibration: Manufactured to P4A tolerance class with tight dimensional control on the bore, OD, and width, this bearing ensures smooth, quiet, and precise operation.
- Optimized for Matched Sets: As a Universal Matchable (SU) bearing, it can be directly paired with another identical bearing to form a preloaded duplex set, simplifying assembly and enhancing system rigidity.
71915 ACDGA/HCP4A Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for advanced machinery requiring high speed, accuracy, and rigidity. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Robotics (Articulated arms and high-accuracy joints)
- High-Frequency Motors and Spindles
- Medical and Dental Equipment (High-speed handpieces, scanners)
- Aerospace Instrumentation (Gyroscopes, navigation systems)
