7018 FEGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7018 FEGA/P4A Bearing Product Overview & Core Advantages
The 7018 FEGA/P4A is a single-row angular contact ball bearing engineered for applications demanding exceptional precision and high-speed performance. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and rotational stability. Its 18° contact angle is optimized to support significant combined loads, handling both radial and axial forces efficiently. With an extra light preload (Class A) and universal matching capability, it is ideal for high-precision spindles and other demanding machinery requiring minimal deflection and high rigidity.
7018 FEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7018 | Basic bearing series, indicating a metric, single-row angular contact design with a 90mm bore. |
| FE | Optimized internal geometry for enhanced performance and speed capability. |
| GA | Indicates a universally matchable (SU) bearing. Two bearings can be mounted in a back-to-back (DB) or face-to-face (DF) arrangement to adjust preload and rigidity. |
| P4A | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances, suitable for the most demanding applications. |
7018 FEGA/P4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured from high-grade chrome steel for rings and balls, the bearing ensures long-term dimensional stability and wear resistance. The phenolic cage contributes to smooth operation at high speeds and is suitable for the specified temperature range.
Superior Load Capacity: The angular contact design with an 18° contact angle provides excellent capability for combined radial and axial loads. With a dynamic load rating of 8055 lbf and a static load rating of 7088 lbf, it offers reliable performance under significant stress.
High-Speed Performance: The optimized internal design and lightweight phenolic cage enable a high limiting speed of 15,000 rpm, making it suitable for high-speed spindle applications.
Precision & Rigidity: The extra light preload (Class A) minimizes system deflection and ensures high positional accuracy, which is critical in precision machining and instrumentation.
7018 FEGA/P4A Bearing Typical Application Areas
The 7018 FEGA/P4A is designed for high-performance machinery where precision and speed are paramount. Typical applications include:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Speed Machining Centers
- Precision Instrumentation and measuring equipment
- Robotic Drives and automation systems
- Medical Equipment spindles
