71917 ACD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71917 ACD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71917 ACD/HCP4ADGA is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This universally matchable (SU) bearing is designed to handle combined loads, offering robust support for both radial and significant axial loads in one direction. Its P4A tolerance class ensures ultra-precise running accuracy, while the ceramic ball construction contributes to lower friction, higher speed capability, and extended service life. Preloaded with an extra light (Class A) preload, it is ideal for spindle arrangements requiring high rigidity and minimal deflection under operational stresses.
71917 ACD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71917 | Basic bearing series and size designation. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a universally matchable (SU) bearing, designed to be paired in a back-to-back or face-to-face arrangement. |
| HC | Indicates the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Denotes a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards for enhanced running accuracy. |
| DGA | Specifies a phenolic (polyamide) cage and that the bearing is lubricated from the factory. |
71917 ACD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation, enabling higher limiting speeds (28,000 rpm). This hybrid design also provides superior resistance to electrical erosion and operates effectively in marginal lubrication conditions.
High Rigidity & Load Capacity: The 25° contact angle and optimized internal geometry are engineered to support high combined loads, offering excellent axial load capacity while maintaining high radial load ratings (Dynamic: 16,088 lbf, Static: 20,588 lbf).
Precision & Stability: Manufactured to P4A tolerance class with an extra light preload, this bearing ensures minimal runout and superior rotational accuracy, which is critical for high-speed applications to prevent vibration and ensure finish quality.
Optimized for High-Speed Operation: The lightweight phenolic cage is ideal for high-speed applications, offering excellent strength and guidance with minimal centrifugal forces. The factory-applied lubrication is formulated for the specified temperature range of -30°C to 110°C.
71917 ACD/HCP4ADGA Bearing Typical Application Areas
The 71917 ACD/HCP4ADGA is a premier choice for high-performance machinery where speed, precision, and reliability are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and spindle drives requiring high rigidity and accuracy.
- High-Frequency Motors & Spindles: Applications where electrical insulation and high-speed capability are needed.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
- Medical Equipment: Dental handpieces and high-speed surgical drills.
