7206 CD/P4AQBTC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7206 CD/P4AQBTC Bearing Product Overview & Core Advantages
The 7206 CD/P4AQBTC is a precision angular contact ball bearing supplied as a Quadruplex Tandem Back-to-Back (QBT) matched set. This configuration is engineered to deliver exceptional system rigidity and handle significant combined loads, including high thrust loads in both directions. Manufactured to a P4A tolerance class, it guarantees superior running accuracy, making it ideal for demanding, high-precision applications requiring maximum stiffness and reliability in a compact design.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7206 | Basic bearing series and size designation (30mm bore, 62mm OD). |
| CD | Indicates a 15° contact angle and specific internal design. |
| P4A | Denotes a high precision tolerance class, superior to ABEC-7. |
| QBT | Signifies a Quadruplex (4-bearing) Tandem Back-to-Back matched arrangement. |
7206 CD/P4AQBTC Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The Quadruplex Tandem Back-to-Back (QBT) arrangement creates an extremely rigid bearing system, capable of supporting high combined radial and axial loads from both directions. This is critical for applications where shaft deflection must be minimized.
High-Speed Capability: The phenolic cage is lightweight and robust, contributing to lower centrifugal forces and stable operation at the high limiting speed of 71,500 rpm. The 15° contact angle provides an optimal balance between radial load capacity and thrust load handling.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional control on the bore, outside diameter, and width, this bearing ensures smooth, quiet, and vibration-free operation, which is essential for high-precision machinery.
Pre-lubricated and Ready for Use: The bearing is supplied lubricated, ensuring immediate operational readiness and protection during the initial run-in period.
7206 CD/P4AQBTC Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is specifically designed for advanced applications, including:
- High-Speed Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Robotic Drives and Actuators
- Aerospace and Defense Positioning Systems
- High-Frequency Motors and Spindles
- Other machinery where extreme stiffness, high-speed operation, and precision are paramount.
