7004 ACEGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7004 ACEGA/P4A Bearing Product Overview & Core Advantages
The 7004 ACEGA/P4A is a single row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and speed capability. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its 25° contact angle provides excellent capacity for combined radial and axial loads, while the Extra Light (A) preload ensures minimal deflection and high system rigidity. The universal matching (SU) design allows for flexible mounting arrangements in pairs, making it ideal for precision spindles and high-speed applications.
7004 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7004 | Basic bearing series with 20mm bore, 42mm OD, 12mm width |
| AC | Angular Contact design with 25° contact angle |
| EGA | Extra Light Preload (Class A) for minimal deflection |
| P4A | High Precision Tolerance Class for superior running accuracy |
7004 ACEGA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and consistent performance.
Optimized Load Capacity: The 25° contact angle enables efficient handling of combined radial and axial loads, with a dynamic load rating of 1609 lbf and static load rating of 731 lbf.
High-Speed Capability: Featuring a phenolic resin cage and precision-ground chrome steel balls, the bearing achieves a limiting speed of 103,000 rpm while maintaining stability.
Precision Preload: The Extra Light (A) preload minimizes axial and radial play, providing enhanced system rigidity and precise rotational characteristics for demanding applications.
7004 ACEGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding spindles
- Precision Instruments - Measuring equipment and optical devices requiring minimal runout
- High-Speed Motors - Servo motors and spindle motors in industrial automation
- Medical Equipment - Dental handpieces and laboratory instrumentation
- Aerospace Components - Guidance systems and auxiliary power units
