708 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
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708 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The 708 CE/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable bearing is designed to accommodate combined loads (radial and axial) simultaneously. Its core advantages include superior running accuracy due to the P4A tolerance class, high-speed capability enabled by a phenolic cage and ceramic balls, and the ability to be universally paired with an identical bearing to create a preloaded set, offering high rigidity and optimal performance in a compact design.
708 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| CE | Indicates a 15° contact angle and specific internal design optimized for high-speed operation. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls, which reduce friction, heat generation, and wear. |
| P4A | Denotes an ABEC 7 / ISO P4A tolerance class, ensuring extremely high dimensional and running accuracy. |
| DGA | Specifies a Universal Matchable (SU) arrangement with an Extra Light (Class A) preload. This allows two identical bearings to be mounted in any configuration (face-to-face, back-to-back, or tandem) to achieve the desired stiffness. |
708 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces centrifugal forces, lowers operating temperature, and extends service life, making it an ideal high-speed bearing.
Phenolic Resin Cage: The lightweight and robust phenolic cage contributes to smooth operation at the limiting speed of 110,000 rpm, offering excellent dimensional stability and low friction.
Universal Matchability & Preload: As a Universal Matchable (SU) bearing with a built-in extra light preload, it simplifies mounting and ensures consistent high rigidity and rotational accuracy in paired sets, effectively handling combined loads.
Precision Engineering: Manufactured to P4A tolerance class with tight bore, outer diameter, and width tolerances, this bearing guarantees precise shaft positioning and minimal runout.
708 CE/HCP4ADGA Bearing Typical Application Areas
The 708 CE/HCP4ADGA is ideally suited for high-performance applications where speed, precision, and reliability are critical. Key industries and equipment include:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- Dental and Medical Handpieces
- High-Frequency Motors and Turbomachinery
- Aerospace Actuators and Instrumentation
