S7018 ACEGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7018 ACEGB/P4A Bearing Product Overview & Core Advantages
The S7018 ACEGB/P4A is a single-row angular contact ball bearing engineered for high-precision applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle is optimized to support significant combined loads (radial and axial loads simultaneously), while the light preload (Class B) ensures minimal deflection and smooth operation. The phenolic cage and premium grease lubrication contribute to its reliable performance in high-speed environments up to 15,000 rpm.
Model Code Breakdown
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| S7018 | Basic bearing series designation | Defines standard dimensions and load capacity |
| AC | 25° contact angle | Optimized for combined radial and axial loads |
| EGB | Optimized internal design and cage specification | Enhanced high-speed capability and stability |
| P4A | High precision tolerance class | Superior running accuracy and dimensional control |
S7018 ACEGB/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls (bore: -0.004mm to 0, OD: -0.004mm to 0) ensuring exceptional running accuracy and minimal vibration.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at limiting speeds of 15,000 rpm. The optimized internal geometry reduces friction and heat generation.
Superior Load Capacity: With a 25° contact angle and 28 chrome steel balls (11.112 mm diameter), this bearing delivers dynamic load rating of 7,605 lbf and static load rating of 6,750 lbf, making it suitable for demanding applications.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be paired with another identical bearing in various configurations (back-to-back, face-to-face, or tandem) to create optimized bearing sets for specific load requirements.
Sealed & Lubricated: Factory-sealed and pre-lubricated with high-quality grease, providing maintenance-free operation within the temperature range of -30°C to 110°C.
S7018 ACEGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- High-Speed Motors: Industrial motors, spindle motors, and high-frequency applications
- Precision Instruments: Measuring equipment, optical instruments, and laboratory devices
- Aerospace Components: Guidance systems, actuator mechanisms, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
