7206 CD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7206 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7206 CD/P4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This matched pair features a back-to-back (DB) arrangement and is manufactured to P4A tolerance class, ensuring superior running precision. Its primary advantage lies in its ability to support combined loads (radial and axial) simultaneously while providing high rigidity and stable operation at high speeds. The pre-lubricated design and phenolic cage contribute to reliable performance in precision spindles and other high-performance machinery.
7206 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7206 | Basic bearing designation (30mm bore, 62mm OD, 32mm width) |
| C | 15° contact angle, optimized for combined loads |
| D | Duplex (two bearings as a set) |
| P4A | High precision tolerance class (exceeds ABEC 7) |
| DB | Back-to-Back arrangement for high moment rigidity |
| C | Moderate preload (Class C) for optimal stiffness |
7206 CD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread between load centers, significantly increasing moment rigidity and operational stability. This configuration is ideal for applications subjected to overturning moments.
Superior Load Capacity: With a 15° contact angle and precision-ground raceways, this bearing efficiently handles combined radial and axial loads. The dynamic load rating of 8932 lbf and static load rating of 7200 lbf ensure reliable performance under demanding conditions.
High-Speed Performance: The phenolic cage provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling operation at limiting speeds up to 71,500 rpm. The P4A precision minimizes vibration and heat generation at high rotational speeds.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal runout for precision applications.
7206 CD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring extreme accuracy and rigidity
- High-Speed Machining Centers: Applications demanding both high rotational speeds and precise positioning
- Precision Rotary Tables: Indexing and positioning systems where minimal deflection is critical
- Industrial Pumps & Compressors: High-performance fluid handling equipment requiring reliable bearing performance
- Medical Equipment: Diagnostic imaging systems and surgical tools where precision and reliability are paramount
- Aerospace Actuation Systems: Flight control mechanisms and other critical aerospace applications
