7002 CEGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7002 CEGA/P4A Bearing Product Overview & Core Advantages
The 7002 CEGA/P4A is a single row angular contact ball bearing designed for high-precision applications requiring superior running accuracy and high-speed capability. Manufactured to the exacting P4A tolerance class, this bearing delivers exceptional dimensional stability and rotational precision. Its 15° contact angle is optimized to support significant combined loads, effectively managing both radial and axial forces. The bearing comes pre-lubricated and features a phenolic cage, contributing to its high limiting speed of 127,000 rpm. As a Universal Matchable (SU) bearing, it can be precisely paired with another identical bearing to form a duplex set, enabling customized preload and stiffness characteristics for demanding spindle and machine tool applications.
7002 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Benefit |
|---|---|---|
| CE | Enhanced internal design with optimized internal geometry. | Improves running accuracy, reduces noise and vibration, and allows for higher operational speeds. |
| GA | Light preload (Class A). | Reduces axial and radial play, enhancing system rigidity and positioning accuracy without generating excessive heat. |
| P4A | High precision tolerance class, superior to ABEC 7. | Guarantees tight dimensional and running accuracy tolerances for applications requiring the highest levels of precision and smooth operation. |
7002 CEGA/P4A Bearing Structural Features & Performance Benefits
- High-Precision Construction: Manufactured to P4A tolerance standards with a bore and outside diameter tolerance of -0.004mm to 0, ensuring exceptional dimensional consistency and facilitating precise fits in housings and on shafts.
- Optimized Internal Geometry (CE): The enhanced internal design, including a 15° contact angle and precisely sized chrome steel balls, provides excellent performance under combined radial and axial loads.
- High-Speed Capability: The lightweight phenolic resin cage offers superior strength and guidance at high rotational speeds, contributing to the high limiting speed. The cage's self-lubricating properties also reduce friction.
- Universal Matching (SU): This bearing is universally matchable, allowing two bearings to be paired in various arrangements (back-to-back, face-to-face, or tandem) to achieve specific stiffness and moment load capacity requirements.
- Pre-lubricated for Immediate Use: Arrives with factory-applied lubrication, ready for installation and initial operation, simplifying the assembly process.
7002 CEGA/P4A Bearing Typical Application Areas
The 7002 CEGA/P4A is engineered for high-performance applications where precision, speed, and reliability are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling heads.
- Precision Instruments: Measuring devices, optical scanners, and laboratory equipment.
- High-Frequency Motors: Spindles for PCB drilling and small precision motors.
- Robotics: Joints and actuators in robotic arms requiring high accuracy and responsiveness.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and control surface actuators.
