7206 ACD/P4ATBTC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7206 ACD/P4ATBTC Bearing Product Overview & Core Advantages
The 7206 ACD/P4ATBTC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This triplex back-to-back (TBT) matched set delivers superior performance under combined loads, handling significant radial and axial forces simultaneously. Manufactured to P4A tolerance class with a 25° contact angle and moderate preload (Class C), it is engineered for high-speed operation, offering excellent running accuracy and stability in precision machinery.
7206 ACD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7206 | Basic bearing series, indicating a 30mm bore, 62mm OD, and 16mm width per single bearing. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates a duplex (two-bearing) set. In this context, it is part of the triplex set designation. |
| /P4A | Specifies the tolerance class P4A, denoting very high precision for dimensional and running accuracy. |
| TB | Arrangement is Back-to-Back. |
| T | Indicates a Triplex set, consisting of three matched bearings. |
| C | Specifies a Moderate Preload (Class C). |
7206 ACD/P4ATBTC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The triplex back-to-back arrangement creates an extremely rigid bearing system, capable of withstanding heavy combined radial and axial loads and overturning moments. This configuration significantly increases the overall moment stiffness of the application.
Precision & High-Speed Performance: The P4A tolerance class ensures minimal runout and vibration, which is critical for high-speed spindles. The phenolic cage offers low weight and excellent performance at high rotational speeds, contributing to the limiting speed of 100,500 rpm.
Optimized Material & Design: Constructed from chrome steel for both rings and balls, the bearing provides high durability and fatigue life. The open seal type allows for optimal lubrication flow, which is essential for the high-speed thermal management of the preloaded set.
7206 ACD/P4ATBTC Bearing Typical Application Areas
The 7206 ACD/P4ATBTC is ideally suited for high-performance machinery where maximum rigidity and precision are non-negotiable. Key applications include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling heads.
- Precision Rotary Tables: Indexing and rotary tables requiring high axial and moment load capacity.
- High-Frequency Spindles: Applications in PCB drilling and precision engraving.
- Industrial Pumps & Compressors: For shafts subjected to significant combined loads.
