71801 CDGA/HCP4
Hybrid Ceramic Super Precision Bearings
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71801 CDGA/HCP4 Bearing Product Overview & Core Advantages
The 71801 CDGA/HCP4 is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single bearing features a 15° contact angle and an Extra Light (Class A) preload, making it ideal for managing combined loads where high rigidity and minimal deflection are critical. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance, achieving a limiting speed of 140,000 rpm. Manufactured to P4 tolerance class, it guarantees ultra-precise running accuracy, establishing it as a premier choice for the most demanding spindle and precision machinery applications.
71801 CDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71801 | Basic bearing designation, indicating a metric, ultra-light series bearing with a 12mm bore. |
| C | Specifies a 15° contact angle. |
| DG | Indicates the bearing is Universal Matchable (SU), allowing for precise preload setting when mounted in pairs or sets. |
| A | Denotes an Extra Light preload class. |
| HCP4 | Signifies the bearing is supplied lubricated and manufactured to the P4 tolerance class for superior dimensional and running accuracy. |
71801 CDGA/HCP4 Bearing Structural Features & Performance Benefits
- High-Speed & Stiffness: The combination of ceramic balls (silicon nitride) and a lightweight phenolic resin cage significantly reduces centrifugal forces and friction, enabling exceptional high-speed capabilities up to 140,000 rpm while maintaining high system rigidity.
- Precision & Accuracy: Manufactured to ABEC 7 / P4 tolerance standards with tight bore, OD, and width tolerances, this bearing ensures minimal runout and vibration for superior positional accuracy.
- Thermal Stability: The phenolic cage offers excellent dimensional stability across the operating temperature range of -30°C to 110°C, ensuring consistent performance.
- Universal Matching: The Universal Matchable (SU) designation means these bearings are manufactured to specific precision grades that allow them to be mounted in sets (typically 2 or 3) to achieve a defined preload without selective assembly, simplifying installation and optimizing stiffness.
71801 CDGA/HCP4 Bearing Typical Application Areas
This high-precision angular contact bearing is specifically designed for advanced machinery requiring the highest levels of speed and accuracy.
- High-Frequency Spindles: CNC machining centers, PCB drilling machines, and precision grinding spindles.
- Precision Instrumentation: High-speed centrifuges, optical scanners, and coordinate measuring machines (CMM).
- Semiconductor Manufacturing: Wafer handling robots and stepper motors.
- Dental & Medical Handpieces: Where compact size, high RPM, and reliability are paramount.
