7018 ACD/P4ADGC
7000 Series Super Precision Angular Contact Ball Bearings
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7018 ACD/P4ADGC Bearing Product Overview & Core Advantages
The 7018 ACD/P4ADGC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. As a universal matchable (SU) bearing supplied in pre-matched pairs, it delivers superior performance under combined loads while maintaining precise axial positioning. Manufactured to P4A tolerance class with a 25° contact angle and moderate preload (Class C), this bearing offers optimized stiffness for high-precision spindles and rotating systems. Its phenolic cage and chrome steel construction ensure reliable operation at high speeds up to 16,000 rpm.
7018 ACD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACD | 25° Contact Angle, Universal Matchable Design | Optimized for combined radial and axial loads, enables flexible mounting arrangements |
| P4A | High Precision Tolerance Class | Superior running accuracy and dimensional stability for precision applications |
| DGC | Pre-lubricated with High-performance Grease | Ready for immediate use with optimized lubrication for the specified temperature range |
7018 ACD/P4ADGC Bearing Structural Features & Performance Benefits
High Rigidity Design: The dual bearing arrangement with moderate preload provides exceptional system stiffness, minimizing deflection under heavy combined loads and ensuring precise rotational accuracy.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing efficiently handles substantial radial loads and bidirectional axial loads simultaneously, featuring a dynamic load rating of 27,225 lbf and static load rating of 32,175 lbf.
High-Speed Performance: The phenolic cage construction reduces centrifugal forces and friction, enabling reliable operation at limiting speeds up to 16,000 rpm while maintaining dimensional stability.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls (bore tolerance: -0.004mm to 0), this bearing ensures consistent performance and interchangeability in precision assemblies.
7018 ACD/P4ADGC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring exceptional rigidity and accuracy
- Precision Robotics: Joint and arm mechanisms demanding high stiffness and positional accuracy
- Industrial Pumps & Compressors: High-speed rotating systems where reliability and load capacity are critical
- Medical Equipment: Diagnostic imaging systems and surgical tools requiring smooth, precise rotation
- Aerospace Systems: Guidance mechanisms and control surface actuators needing reliable performance under combined loads
