7206 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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7206 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 7206 ACDGA/HCP4A is a single-row angular contact ball bearing engineered for ultra-high precision and high-speed performance. Designed with a 25° contact angle and manufactured to P4A super precision tolerance, this bearing excels in applications requiring exceptional rotational accuracy and rigidity. Its ceramic balls and phenolic cage contribute to reduced friction, lower operating temperatures, and significantly higher limiting speeds compared to standard steel ball bearings. As a universally matchable (SU) bearing, it can be preloaded in various configurations with other bearings from the same manufacturing lot, offering design flexibility for complex spindle arrangements.
7206 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- 7206: Basic designation indicating a medium series angular contact ball bearing with a 30mm bore.
- AC: Angular Contact design with a 25° contact angle.
- D: Signifies a high ball complement (13 balls), enhancing load capacity.
- GA: Indicates a specific universal matchable preload grouping for flexible mounting.
- /HC: Denotes the use of Hybrid Ceramic balls (Silicon Nitride).
- P4A: Specifies the tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional running accuracy.
7206 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & Low Friction: The combination of ceramic balls and a lightweight phenolic cage minimizes centrifugal forces and friction, enabling a very high limiting speed of 100,500 rpm. This results in lower heat generation and extended service life.
High Rigidity & Load Capacity: The 25° contact angle and high ball complement design provide superior stiffness and the ability to handle significant combined radial and axial loads (Dynamic: 5265 lbf, Static: 3442 lbf).
Ultra-Precision: Manufactured to P4A tolerance class with tight bore, outside diameter, and width tolerances, this bearing ensures minimal runout and vibration for critical high-precision applications.
Universal Matching: The SU/Universal Matchable designation allows for flexible mounting in duplex sets (back-to-back, face-to-face, or tandem) to achieve specific preload and rigidity requirements without selective sorting.
7206 ACDGA/HCP4A Bearing Typical Application Areas
The 7206 ACDGA/HCP4A is ideally suited for the most demanding high-speed and high-precision machinery, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Robotic Drives
- High-Frequency Motors and Spindles
- Aerospace & Defense Instrumentation
- Medical & Dental Equipment (High-speed handpieces, scanners)
