71812 CDGA/HCP4
Hybrid Ceramic Super Precision Bearings
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71812 CDGA/HCP4 Bearing Product Overview & Core Advantages
The 71812 CDGA/HCP4 is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing features a 15° contact angle and is supplied as a Universal Matchable (SU) set, allowing for precise preload control when mounted in pairs. Its core advantages include superior running accuracy due to its P4 tolerance class, high-speed capability enabled by a phenolic cage and ceramic balls, and the ability to accommodate combined radial and axial loads efficiently.
71812 CDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71812 | Basic bearing series and size designation (60mm bore, 78mm OD, 10mm width). |
| C | Specifies a 15° contact angle. |
| DG | Indicates a Universal Matchable (SU) bearing, designed to be paired for controlled preload. |
| A | Signifies an Extra light preload (Class A). |
| HCP4 | Denotes a P4 tolerance class for high precision, and the bearing is lubricated. |
71812 CDGA/HCP4 Bearing Structural Features & Performance Benefits
High-Precision & Rigidity: Manufactured to P4 tolerance class with tight dimensional control on bore, outside diameter, and width, ensuring minimal runout and superior system rigidity.
High-Speed Performance: The combination of a lightweight phenolic cage and ceramic balls significantly reduces centrifugal forces, enabling a high limiting speed of 33,000 rpm.
Load Capacity: The 15° contact angle is optimized to handle significant combined loads, efficiently supporting both radial and axial forces.
Universal Matching: As a Universal Matchable (SU) bearing, it can be mounted in pairs (back-to-back, face-to-face, or tandem) to create a preloaded set, increasing stiffness and rotational accuracy.
71812 CDGA/HCP4 Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Spindles for PCB drilling and milling
- Precision Grinding Spindles
- High-Speed Automation & Robotics
- Medical Equipment and Dental Handpieces
