7007 ACEGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7007 ACEGA/P4A Bearing Product Overview & Core Advantages
The 7007 ACEGA/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Positioned in the P4A tolerance class, it offers superior dimensional and running accuracy. Its 25° contact angle and extra light preload (Class A) make it ideally suited for handling combined loads, particularly high-speed applications where minimal friction and heat generation are critical. The bearing is universally matchable (SU), allowing for precise axial clearance control when mounted in pairs, ensuring optimal stiffness and rotational precision.
7007 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series, indicating a 35mm bore, 62mm OD, and 14mm width. |
| AC | Angular Contact design, optimized for combined radial and axial loads. |
| E | Reinforced design, typically indicating optimized internal geometry for higher capacity and rigidity. |
| GA | Specifies a universally matchable bearing supplied with Extra Light (Class A) preload. |
| P4A | Indicates a high-precision tolerance class with strict limits on dimensional and running accuracy. |
7007 ACEGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design and reinforced internal structure provide high rigidity, enabling the bearing to effectively support combined radial and axial loads. The 25° contact angle is optimal for applications with significant axial forces.
High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and reduced friction, which is essential for achieving the high limiting speed of 56,000 rpm. The open design facilitates efficient lubrication and cooling.
Precision and Accuracy: Manufactured to P4A tolerance class with tight dimensional controls on bore, outside diameter, and width, this bearing ensures minimal runout and vibration, which is critical for precision spindles and high-accuracy machinery.
Universal Matching Capability: As a universally matchable (SU) bearing, it can be paired with another identical bearing in various configurations (back-to-back, face-to-face, or tandem) to create a preloaded bearing set that delivers enhanced system stiffness and precise rotational performance.
7007 ACEGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning spindles requiring high precision and rigidity.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Speed Motors and Drives: Electric spindles and servo motors where low friction and high-speed capability are paramount.
- Aerospace and Defense Systems: Gyroscopes, radar equipment, and other critical rotational mechanisms.
