71809 ACDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71809 ACDGA/P4 Bearing Product Overview & Core Advantages
The 71809 ACDGA/P4 is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered to the P4 tolerance class, this bearing delivers superior running precision. Its key advantage lies in its ability to accommodate combined loads, efficiently handling both radial and axial forces. The compact design with a 7 mm width makes it ideal for space-constrained, high-performance assemblies. Preloaded with an extra light (Class A) setting, it ensures smooth operation with minimal vibration, making it a premier choice for high-speed and high-rigidity applications.
71809 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
- 71809: Basic designation indicating a metric, light series angular contact ball bearing with a 45 mm bore.
- AC: Angular Contact design.
- D: Signifies a universally matchable (SU) bearing, allowing for precise pairing in sets.
- GA: Indicates a specific internal clearance and preload combination (Extra Light / Class A).
- P4: Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances.
71809 ACDGA/P4 Bearing Structural Features & Performance Benefits
High Rigidity and Precision: Manufactured to P4 tolerance class standards, this bearing guarantees minimal runout and exceptional dimensional stability, which is critical for the accuracy of the entire system.
Optimized for Combined Loads: The 25° contact angle is engineered to provide an excellent balance for supporting significant axial loads in one direction alongside radial loads.
High-Speed Capability: The lightweight and robust phenolic resin cage ensures stable guidance of the balls at high rotational speeds, contributing to the high limiting speed of 46,000 rpm. The cage design minimizes friction and allows for efficient lubrication.
Universal Matchability: As a Universal Matchable (SU) bearing, the 71809 ACDGA/P4 can be precisely paired with other identical bearings in sets (typically 2 or more) to achieve specific preload and stiffness characteristics, enhancing system performance.
71809 ACDGA/P4 Bearing Typical Application Areas
This high-precision bearing is ideally suited for demanding applications where speed, accuracy, and rigidity are paramount. Key industries and equipment 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 and other high-RPM electric motors.
- Aerospace Actuation Systems: Where reliability and precision under load are critical.
