S71909 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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S71909 ACD/HCP4A Bearing Product Overview & Core Advantages
The S71909 ACD/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to a P4 (ABEC-7) tolerance class, this bearing is optimized to handle combined loads with high reliability. Its compact design, featuring a ceramic ball and phenolic cage, provides superior high-speed performance and rigidity, making it an ideal choice for high-rotation precision machinery.
S71909 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series.
- 1909: Standard size designation (Bore: 45mm, OD: 68mm, Width: 12mm).
- ACD: Angular Contact design with a 25° contact angle and preload applied.
- HC: Denotes the use of Hybrid Ceramic balls (Silicon Nitride).
- P4: Indicates a P4 tolerance class (ABEC-7), signifying ultra-precision manufacturing.
- A: Specific internal design and preload specification.
S71909 ACD/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 25° contact angle and preload enables the bearing to support significant combined radial and axial loads simultaneously, providing exceptional operational stability.
Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage reduces centrifugal forces and inertial mass, allowing for a high limiting speed of 20,000 rpm. This construction also minimizes heat generation and wear.
Precision and Longevity: Manufactured to P4 precision standards with a sealed and lubricated design, this bearing ensures consistent performance, low noise, and extended service life in precision applications.
S71909 ACD/HCP4A Bearing Typical Application Areas
The S71909 ACD/HCP4A is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Motors and Drives
- Precision Grinding Spindles
- Aerospace and Defense Systems
- Medical and Dental Equipment
