71917 ACE/HCP4ALDGA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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71917 ACE/HCP4ALDGA Bearing Product Overview & Core Advantages
The 71917 ACE/HCP4ALDGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable bearing is designed to accommodate combined loads (radial and axial) simultaneously, making it ideal for high-rigidity, high-speed configurations. Its P4A super-precision tolerance and ceramic ball construction deliver superior rotational accuracy, reduced heat generation, and extended service life in critical machinery.
71917 ACE/HCP4ALDGA Bearing Model Code Explained, Specifications & Naming Convention
| 71917 | Basic designation: 85mm bore, 120mm OD, 36mm width |
| ACE | 25° contact angle, universal matchable design |
| HC | Hybrid ceramic balls for enhanced performance |
| P4A | Super precision tolerance class |
| LDGA | Light preload, phenolic cage, lubricated |
71917 ACE/HCP4ALDGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (28,000 rpm) and extended service life.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
Optimized Cage Design: The phenolic resin cage provides excellent dimensional stability at high speeds while reducing weight and improving lubrication flow.
Universal Matchability: As a Universal Matchable (SU) bearing, it can be paired in any combination to create preloaded sets without specific mounting positions, simplifying installation and maintenance.
Enhanced Load Capacity: With a 25° contact angle and robust construction, it delivers superior performance under combined radial and axial loads (dynamic: 10,395 lbf, static: 9,900 lbf).
71917 ACE/HCP4ALDGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles
- Medical Equipment: Dental handpieces, surgical tools, and imaging systems
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
- High-Speed Motors: CNC spindle motors and high-frequency electric motors
