7018 ACEGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7018 ACEGA/P4A Bearing Product Overview & Core Advantages
The 7018 ACEGA/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle provides optimal performance for combined radial and axial loads, while the phenolic cage enables high-speed operation up to 15,000 rpm. As a universal matchable bearing, it can be paired with another identical bearing to create precisely preloaded sets for maximum system rigidity.
7018 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| AC | 25° Contact Angle | Optimized for combined radial and axial loads |
| EGA | Extra Light Preload (Class A) | Reduced friction and optimal high-speed performance |
| P4A | High Precision Tolerance Class | Exceptional running accuracy and dimensional stability |
7018 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 for precision applications.
Optimized Load Capacity: With a 25° contact angle and 28 chrome steel balls of 11.112mm diameter, this bearing achieves a dynamic load rating of 7605 lbf and static load rating of 6750 lbf, providing reliable performance under combined loads.
High-Speed Capability: The phenolic cage material and optimized internal geometry enable a limiting speed of 15,000 rpm, making it ideal for high-speed spindle applications.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be precisely paired with another identical bearing to create preloaded sets that deliver maximum system rigidity and accuracy.
7018 ACEGA/P4A Bearing Typical Application Areas
Machine Tool Spindles: High-precision machining centers and CNC lathes requiring exceptional running accuracy
Precision Grinding Spindles: Applications demanding high rotational speeds and minimal vibration
High-Speed Motors: Electric motors and generators operating at elevated speeds
Aerospace Systems: Critical rotating components in aircraft systems and instrumentation
Medical Equipment: High-speed dental handpieces and medical imaging devices
