7007 CE/P4ADT
7000 Series Super Precision Angular Contact Ball Bearings
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7007 CE/P4ADT Bearing Product Overview & Core Advantages
The 7007 CE/P4ADT is a precision angular contact ball bearing supplied as a matched duplex tandem (DT) set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this bearing is preloaded and manufactured to the stringent P4A tolerance class. Its primary advantage lies in its ability to handle significant combined loads (radial and axial) in one direction with high stiffness, making it ideal for high-speed and high-precision spindles.
7007 CE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series, indicating a 35 mm bore, 62 mm OD, and 28 mm width. |
| C | Designates a 15° contact angle, optimized for high-speed operation and high axial load capacity. |
| E | Indicates reinforced (optimized) internal design, providing higher load ratings and rigidity. |
| P4A | Specifies a high-precision tolerance class (superior to ABEC 7), ensuring minimal runout and vibration for precise applications. |
| DT | Denotes a Duplex Tandem arrangement. Two bearings are factory-matched and preloaded to work in tandem, significantly increasing axial load capacity and system rigidity in one direction. |
7007 CE/P4ADT Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The duplex tandem arrangement creates a highly rigid bearing system capable of withstanding heavy combined loads. The 15° contact angle and reinforced internal design (E-suffix) contribute to high axial load carrying capacity.
High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and allows for a high limiting speed of 56,000 rpm. The bearing is pre-lubricated for immediate operation.
Precision Operation: Manufactured to P4A tolerance class from high-grade chrome steel, this bearing ensures exceptional running accuracy, low noise, and minimal heat generation, which is critical for precision machinery.
Matched Set Simplicity: Supplied as a pre-configured matched set, these bearings eliminate the complexity of on-site matching and preloading, ensuring optimal performance and reliability out-of-the-box.
7007 CE/P4ADT Bearing Typical Application Areas
The 7007 CE/P4ADT is designed for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors requiring high rotational accuracy.
- Robotics: High-precision joints and actuators.
