71909 ACE/HCP4ALDGA
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
71909 ACE/HCP4ALDGA Bearing Product Overview & Core Advantages
The 71909 ACE/HCP4ALDGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a universal matchable (SU) bearing supplied in a pre-set pair, it delivers superior rigidity and can accommodate combined radial and axial loads simultaneously. Its construction with ceramic balls and a P4A tolerance class ensures low heat generation, high-speed capability, and extended service life in precision machinery.
71909 ACE/HCP4ALDGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71909 | Basic bearing series and size designation |
| ACE | Specific internal design and contact angle (25°) |
| HC | Hybrid Ceramic (Silicon Nitride balls) |
| P4A | High Precision Tolerance Class (superior to ABEC 7) |
| L | Light Preload |
| DGA | Universal Matchable (SU) bearing pair |
71909 ACE/HCP4ALDGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings with ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (41,000 rpm) and longer service life compared to all-steel bearings.
Precision Engineering: Manufactured to P4A tolerance class with extremely tight dimensional tolerances (bore: -0.004mm to 0), this bearing ensures minimal runout and vibration for superior rotational accuracy.
Universal Matching Capability: As Universal Matchable (SU) bearings supplied in a matched pair of 2, they can be arranged in various configurations (back-to-back, face-to-face, or tandem) to optimize load capacity and system rigidity for specific application requirements.
Optimized Cage Design: The phenolic cage provides excellent guidance at high speeds while offering reduced weight and friction characteristics.
71909 ACE/HCP4ALDGA Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding applications
- Medical Equipment - Dental handpieces and surgical tools requiring sterile operation
- Aerospace Systems - Guidance systems and auxiliary power units
- Semiconductor Manufacturing - Wafer handling robots and precision positioning stages
- High-Speed Motors - CNC spindle motors and turbo-molecular pumps
