S7018 ACEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
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S7018 ACEGA/P4A Bearing Product Overview & Core Advantages
The S7018 ACEGA/P4A is a precision angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. Operating under the P4A tolerance class, this bearing is designed to simultaneously handle combined radial and axial loads with high efficiency. Its extra light preload (Class A) ensures minimal deflection and smooth operation, making it ideal for high-speed spindles and other high-precision machinery. The sealed design with phenolic cage contributes to its robust performance in demanding environments.
S7018 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7018 | Basic bearing series designation |
| AC | Angular Contact design with 25° contact angle |
| EGA | Pre-greased with specific high-performance lubricant |
| P4A | Ultra-precision tolerance class for highest running accuracy |
S7018 ACEGA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with extremely tight dimensional control (bore and OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 25° contact angle and precision-ground raceways enable efficient handling of combined radial and axial loads, with dynamic load rating of 7605 lbf and static load rating of 6750 lbf.
High-Speed Capability: The phenolic cage provides excellent strength-to-weight ratio, contributing to the bearing's ability to reach limiting speeds of 15,000 rpm while maintaining stability.
Sealed & Lubricated Design: Factory-sealed and pre-greased for immediate installation and long-term performance, operating effectively within a temperature range of -30°C to 110°C.
Universal Matching: Designed as Universal Matchable (SU), allowing precise pairing with another identical bearing to form a matched set of 2 bearings for optimized preload and performance.
S7018 ACEGA/P4A Bearing Typical Application Areas
The S7018 ACEGA/P4A excels in applications requiring ultra-high precision and speed, including:
- Machine tool spindles for grinding, milling, and turning operations
- High-speed machining centers and precision manufacturing equipment
- Medical equipment spindles and dental handpieces
- Aerospace components and navigation systems
- Precision instruments and measuring devices
- Robotic joints and automation systems requiring high positional accuracy
