7207 CD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7207 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7207 CD/P4ADBC is a precision duplex angular contact ball bearing specifically designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched set excels at handling combined radial and axial loads from both directions simultaneously. Manufactured to P4A tolerance class with a moderate preload (Class C), it delivers superior running accuracy, high system stiffness, and stable performance in demanding high-speed operations up to 41,000 rpm.
7207 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7207 | Basic bearing series, indicating a 35mm bore, 72mm OD, and 34mm width. |
| C | 15° contact angle, optimized for high-speed performance and moderate axial load capacity. |
| D | Duplex (two bearings supplied as a set). |
| P4A | High precision tolerance class (equivalent to ABEC 7), ensuring minimal runout and vibration. |
| DB | Back-to-Back arrangement, providing high moment rigidity and excellent stability under complex loads. |
| C | Moderate preload (Class C) applied, enhancing system stiffness and rotational accuracy. |
7207 CD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a wide effective spread between load centers, significantly increasing the bearing set's resistance to moment loads and tilting moments, resulting in exceptional system rigidity.
Superior Load Capacity: With a 15° contact angle and duplex design, this bearing set efficiently handles combined loads, including substantial radial forces and bidirectional axial thrust.
Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the P4A precision and optimized internal geometry contribute to smooth operation at the high limiting speed of 41,000 rpm.
Pre-Configured for Performance: Supplied as a matched set with moderate preload, it eliminates the need for complex axial adjustment during installation, ensuring immediate optimal performance and simplifying the assembly process.
7207 CD/P4ADBC Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for applications where high rotational accuracy, rigidity, and speed are critical. Key industries and equipment include:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes and Drives
- Industrial Pumps and Compressors
- Medical and Laboratory Equipment
- Robotic Arm Joints and Precision Actuators
