7004 CEGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7004 CEGB/P4A Bearing Product Overview & Core Advantages
The 7004 CEGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered to accommodate combined loads (radial and axial), this bearing features a light preload (Class B) and universal matching capability (SU designation), enabling precise axial play adjustment when mounted in pairs. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-speed spindles and precision machinery where minimal runout and vibration are critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7004 | Basic bearing series, 20mm bore, 42mm OD, 12mm width |
| C | 15° contact angle design |
| E | Optimized internal design for high-speed operation |
| GB | Light preload (Class B) |
| P4A | High precision tolerance class (superior to ABEC 7) |
7004 CEGB/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage and optimized internal geometry enable operation at limiting speeds up to 121,000 rpm, reducing centrifugal forces and maintaining stability under extreme rotational conditions.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for applications requiring exceptional rotational accuracy.
Superior Load Capacity: The 15° contact angle and chrome steel construction provide excellent combined load capacity, handling both radial loads (1667 lbf dynamic) and axial loads simultaneously.
Universal Matching Design: As a Universal Matchable (SU) bearing, the 7004 CEGB/P4A can be paired in any combination to achieve specific preload requirements, simplifying installation and optimizing system stiffness.
7004 CEGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines
- Precision Instrumentation: Measuring equipment, optical scanners, and laboratory apparatus
- High-Speed Motors: Servo motors, spindle motors, and high-frequency drives
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging devices
