71917 ACE/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 ACE/HCP4ADGA Bearing Product Overview & Core Advantages
The 71917 ACE/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing is designed to handle combined loads with its 25° contact angle, providing robust support for both radial and axial forces. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy and rotational precision. Key advantages include its capability for high-speed operation up to 28,000 rpm, enhanced by ceramic balls and a phenolic cage, making it ideal for applications where reliability and precision are paramount.
71917 ACE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | 25° contact angle, universal matchable (SU) design |
| HC | Hybrid Ceramic: Features ceramic balls for reduced friction and higher speed capability |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards |
| DGA | Preloaded pair: Extra light preload (Class A), supplied as a matched set of 2 bearings |
71917 ACE/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces friction, heat generation, and wear. This enables higher limiting speeds (28,000 rpm), extended service life, and improved performance in lubricant-starved conditions.
Precision & Rigidity: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration. The 25° contact angle and universal matchable design allow for flexible mounting arrangements (DB, DF, DT) to optimize system stiffness and handle combined radial and axial loads efficiently.
High-Speed Phenolic Cage: The lightweight and robust phenolic resin cage provides excellent dimensional stability and low friction at high rotational speeds, contributing to the bearing's overall high-speed performance and smooth operation.
Matched Set Performance: Supplied as a preloaded pair (DGA), these bearings are universally matchable, ensuring simplified installation and immediate optimal performance with consistent preload and running accuracy.
71917 ACE/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Robotics: Arm joints and rotary actuators where accuracy, speed, and reliability are critical.
- High-Frequency Spindles: PCB drilling, dental handpieces, and other applications demanding very high rotational speeds.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
- Medical Equipment: Centrifuges and high-speed dental or surgical hand tools.
