7018 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7018 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The 7018 CE/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing features a 15° contact angle and extra light preload (Class A), making it ideal for applications requiring minimal deflection under combined loads. With its ceramic ball construction and P4A tolerance class, this bearing delivers superior high-speed capability and thermal stability, while the phenolic cage ensures smooth operation at extreme rotational speeds.
7018 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Performance Benefit |
|---|---|---|
| CE | Ceramic Balls | Reduced weight, higher stiffness, and superior performance at high speeds and temperatures |
| HC | Hybrid Ceramic | Combination of ceramic balls with steel rings for optimal performance |
| P4A | High Precision Tolerance Class | Exceptional dimensional and running accuracy for precision applications |
| DGA | Universal Matchable (SU) | Can be mounted in any combination to achieve required preload and stiffness |
7018 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of ceramic balls with chrome steel rings provides significant advantages in high-speed applications, including reduced centrifugal forces, lower operating temperatures, and extended service life.
Phenolic Cage Design: The phenolic resin cage offers excellent strength-to-weight ratio, contributing to the bearing's limiting speed of 15,000 rpm while providing smooth operation and reduced vibration.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore tolerance: -0.004mm to 0), ensuring consistent performance and high rigidity in precision applications.
Universal Matching Capability: As an SU-type bearing, it can be universally matched in any combination, allowing for flexible arrangement designs and optimized preload characteristics.
7018 CE/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Aerospace Systems: Guidance systems, flight control mechanisms, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages
- High-Speed Motors: CNC spindle motors, turbochargers, and precision electric motors
