71806 ACD/HCP4DGA
Hybrid Ceramic Super Precision Bearings
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71806 ACD/HCP4DGA Bearing Product Overview & Core Advantages
The 71806 ACD/HCP4DGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and speed. This universally matchable bearing is part of a pre-loaded pair, enabling it to handle combined radial and axial loads simultaneously. Its construction with a ceramic ball and phenolic cage facilitates superior high-speed performance and thermal stability, making it an ideal choice for high-reliability, high-rigidity spindle arrangements.
71806 ACD/HCP4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71806 | Basic bearing series and size designation. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Specifies a duplex (two-bearing) set. |
| HC | Indicates the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4 | Denotes a high-precision tolerance class (ABEC 7 / ISO P4). |
| DGA | Universal Matchable (SU) arrangement with Extra Light (A) preload. |
71806 ACD/HCP4DGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, especially at high speeds up to 100,500 rpm.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent dimensional stability and low friction, further enhancing the high-speed capability and smooth operation.
High Rigidity & Load Capacity: The angular contact design and universal matching allow for a rigid bearing setup that can support significant combined loads (Radial Dynamic: 1521 lbf, Static: 1598 lbf).
Ultra-Precision: Manufactured to P4 tolerance class, this bearing guarantees minimal runout and vibration, which is critical for achieving the highest levels of machining and positioning accuracy.
71806 ACD/HCP4DGA Bearing Typical Application Areas
This high-precision angular contact ball bearing is engineered for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Coordinate Measuring Machines (CMM) and optical scanners.
- High-Frequency Motors: Spindles for PCB drilling and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes and radar positioning systems.
