71917 CE/HCP4ADBB
Hybrid Ceramic Super Precision Bearings
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71917 CE/HCP4ADBB Bearing Product Overview & Core Advantages
The 71917 CE/HCP4ADBB is a high-precision duplex angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. This matched arrangement of two bearings in a back-to-back (DB) configuration provides superior stability and can accommodate combined radial and axial loads simultaneously. Manufactured to a P4A tolerance class and featuring a light preload (Class B), it is engineered for high-speed operation, making it an ideal choice for precision machinery and high-rigidity spindle systems.
71917 CE/HCP4ADBB Bearing Model Code Explained, Specifications & Naming Convention
- 71917: Basic bearing series and size designation (85mm bore, 120mm OD, 36mm width)
- C: 15° contact angle
- E: Optimized internal design
- HC: Hybrid Ceramic - featuring ceramic balls and steel rings
- P4A: High precision tolerance class
- DB: Duplex Back-to-Back mounting arrangement
- B: Light preload classification
71917 CE/HCP4ADBB Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, minimizes heat generation, and extends service life, particularly in high-speed applications.
High Rigidity & Load Capacity: The duplex back-to-back arrangement creates a rigid bearing system capable of handling substantial combined loads and moment loads, ensuring precise shaft positioning and minimal deflection.
Superior High-Speed Performance: The phenolic resin cage and ceramic balls enable exceptional limiting speeds up to 17,000 rpm while maintaining dimensional stability and reducing centrifugal forces.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional tolerances (bore/OD: -0.004mm to 0), this bearing ensures consistent performance and accurate rotational characteristics in precision applications.
71917 CE/HCP4ADBB Bearing Typical Application Areas
This high-precision duplex angular contact bearing is specifically designed for applications requiring exceptional accuracy, high speeds, and rigid support:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment
- High-Speed Motors: Industrial motors and servo drives
- Medical Equipment: Dental handpieces, laboratory instrumentation
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
