71918 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71918 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The 71918 CE/HCP4ADGA is a super-precision angular contact ball bearing designed for the most demanding applications. As a universal matchable (SU) bearing supplied in a set of two, it enables simplified mounting and optimal preload configuration. Its core advantages include exceptional rotational accuracy from its P4A tolerance class, high-speed capability enabled by a phenolic cage and ceramic balls, and the ability to accommodate combined loads due to its 15° contact angle. This bearing is engineered for high reliability and long service life in precision machinery.
71918 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71918 | Basic bearing series and size designation (90mm bore, 125mm OD, 36mm width) |
| CE | Contact angle of 15° |
| HC | Hybrid Ceramic bearing (Ceramic balls with steel rings) |
| P4A | Super precision tolerance class, exceeding ABEC 7/ISO P4 |
| DGA | Universal matchable bearing set (SU designation), supplied pre-lubricated |
71918 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and provides superior performance at high speeds up to 15,000 rpm. This construction also offers enhanced stiffness and longer service life.
Phenolic Cage: The lightweight phenolic resin cage contributes to the bearing's high-speed capability and provides excellent dimensional stability across the operating temperature range (-30°C to 110°C).
Universal Matchable Design (SU): As a universal matchable bearing supplied in a set of two, it allows for flexible mounting arrangements and simplified preload adjustment, delivering optimal rigidity and running accuracy.
Extra Light Preload (Class A): This preload class ensures minimal friction while maintaining sufficient stiffness for precision applications, making it ideal for high-speed spindles where thermal expansion must be controlled.
71918 CE/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- Precision Medical Equipment: Dental handpieces, surgical tools, and imaging systems
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- High-Speed Motors: CNC spindle motors, turbo-molecular pumps, and compressor systems
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages
