71913 ACEGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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71913 ACEGA/HCP4AL Bearing Product Overview & Core Advantages
The 71913 ACEGA/HCP4AL is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a single bearing from a universally matchable (SU) pair, it is designed to accommodate combined radial and axial loads simultaneously. Its defining features include a P4A super-precision tolerance class, a ceramic ball construction, and an extra light preload (Class A), making it ideal for high-speed spindles and other high-rigidity, high-rotation accuracy scenarios.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing series and size designation (65mm bore, 90mm OD, 13mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| EGA | Specific internal design and cage designation. |
| HC | Hybrid Ceramic construction, indicating ceramic balls and steel rings. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
71913 ACEGA/HCP4AL Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This enables higher limiting speeds (36,000 rpm), extended service life, and improved performance in lubricant-starved conditions.
- Phenolic Resin Cage: The lightweight and robust phenolic cage contributes to smooth operation at high speeds, offering excellent dimensional stability and low friction.
- High Rigidity & Precision: The P4A tolerance class and extra light preload (Class A) ensure minimal runout and precise shaft positioning, which is critical for applications requiring high rotational accuracy and system stiffness.
- Superior Load Capacity: With a 25° contact angle, this bearing is optimized to handle significant combined loads, providing reliable performance under complex loading conditions.
- Universal Matchability (SU): This bearing is one of a universally matchable pair, allowing for flexible mounting arrangements (DB, DF, DT) to achieve the required preload and rigidity without selective sorting.
71913 ACEGA/HCP4AL Bearing Typical Application Areas
The 71913 ACEGA/HCP4AL is specifically designed for high-performance machinery where precision, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Motors & Spindles: Electric spindles for PCB drilling and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and auxiliary power units (APUs).
