707 CE/P4A
Miniature Super Precision Angular Contact Ball Bearings
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Main Dimensions
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707 CE/P4A Bearing Product Overview & Core Advantages
The 707 CE/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4 (ABEC-7) tolerance class, this bearing is preloaded and pre-lubricated, ensuring immediate high rigidity and smooth operation. Its primary advantage lies in its ability to handle combined loads, efficiently supporting both radial and significant axial loads in one direction. The compact design, featuring a 7 mm bore and 6 mm width, makes it ideal for space-constrained, high-precision assemblies requiring superior reliability and positional accuracy.
707 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 707 | Basic Bearing Series/Size | Denotes the compact metric series with a 7 mm bore, 19 mm OD, and 6 mm width. |
| C | 15° Contact Angle | Optimized for high-speed operation and excellent axial load capacity. |
| E | Optimized Internal Design | Features a larger ball complement and redesigned raceways for increased load rating. |
| P4 | Tolerance Class (ABEC-7) | Guarantees extremely tight dimensional and running accuracy for precision applications. |
| A | Preload Level (Light) | Provides increased rigidity, reduces runout, and improves system responsiveness. |
707 CE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and light preload (A) work in tandem to eliminate internal clearance, resulting in exceptional shaft positioning accuracy and stiffness, which is critical for minimizing deflection under load.
- Superior Load Capacity: The 15° contact angle and optimized internal design (E) with 8 precision balls enable the bearing to handle significant combined radial and axial loads simultaneously.
- High-Speed Performance: The lightweight phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to the high limiting speed of 190,000 rpm. The standard lubrication is formulated for high-speed operation.
- Material Integrity: Constructed from high-grade chrome steel for both rings and balls, the bearing offers excellent wear resistance and long-term durability under demanding conditions.
707 CE/P4A Bearing Typical Application Areas
- High-Speed Spindles for CNC machining centers and PCB drilling machines
- Precision Instrumentation and optical encoders
- High-Frequency Motors and turbo-molecular pumps
- Medical Device Drives and dental handpieces
- Aerospace Actuators and guidance systems
