707 CEGA/P4A
Miniature Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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707 CEGA/P4A Bearing Product Overview & Core Advantages
The 707 CEGA/P4A is a single row angular contact ball bearing designed for ultra-high precision applications requiring exceptional rotational accuracy and speed capability. Manufactured to the stringent P4A tolerance class, this bearing delivers superior running accuracy. Its 15° contact angle is optimized for handling combined loads, efficiently supporting significant axial loads in one direction alongside radial loads. The phenolic cage and precision-ground chrome steel components contribute to its high-speed performance and smooth operation, making it an ideal choice for high-precision spindles and other demanding machinery.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 707 | Basic Bearing Series/Size | Defines the core dimensions: 7mm bore, 19mm OD, 6mm width. |
| CE | Contact Angle & Design | Indicates a 15° contact angle and optimized internal design for high-speed operation. |
| GA | Preload Level | Signifies Extra Light (Class A) preload, minimizing friction and heat generation for very high speeds. |
| P4A | Tolerance Class | Denotes a super precision tolerance grade, ensuring extremely tight dimensional and running accuracy. |
707 CEGA/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The combination of a lightweight phenolic resin cage, a 15° contact angle, and extra light preload enables a very high limiting speed of 110,000 rpm. This makes it a premier choice for ultra-high-speed spindle applications.
Precision & Rigidity: Manufactured to P4A super precision standards, this bearing guarantees minimal runout and vibration. The single-row design, when mounted in a Universal Matchable (SU) set, provides high system rigidity and precise axial positioning.
Combined Load Capacity: As an angular contact ball bearing, it is engineered to support combined radial and axial loads simultaneously. The specific internal geometry efficiently manages thrust loads in one direction.
Optimized for Matched Sets: The Universal Matchable (SU) designation means individual bearings are manufactured to be interchangeable in sets (typically 2 or more) to achieve specific preload and rigidity characteristics without selective mounting.
707 CEGA/P4A Bearing Typical Application Areas
The 707 CEGA/P4A is engineered for the most demanding high-precision and high-speed applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and drilling spindles.
- Precision Instruments: Measuring devices, optical scanners, and laboratory equipment.
- High-Frequency Motors: Spindles for PCB drilling and semiconductor manufacturing equipment.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and radar systems.
