S71910 CE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71910 CE/HCP4ADT Bearing Product Overview & Core Advantages
The S71910 CE/HCP4ADT is a super-precision angular contact ball bearing engineered for the most demanding high-speed and high-rigidity applications. As a duplex tandem (DT) matched set, this pair of bearings is designed to handle primarily axial loads in one direction with exceptional accuracy and stability. Its defining features include a P4A tolerance class for ultra-precision, a phenolic resin cage optimized for high rotational speeds, and ceramic (silicon nitride) balls that reduce centrifugal forces, lower operating temperatures, and provide extended service life. This combination makes it an ideal solution for spindles requiring maximum stiffness and superior high-speed performance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71910 | Super-precision angular contact ball bearing series with 50mm bore. |
| CE | Indicates a 15° contact angle, optimized for high-speed operation and high axial load capacity. |
| HC | Hybrid Ceramic: Denotes the use of ceramic balls for enhanced performance. |
| P4A | The tolerance class, specifying extremely tight dimensional and running accuracy, superior to ABEC 7/ISO P4. |
| DT | Duplex Tandem arrangement. Two bearings are mounted together to increase axial load capacity in a single direction. |
S71910 CE/HCP4ADT Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The duplex tandem arrangement creates a highly rigid bearing system capable of supporting significant axial loads. The 15° contact angle provides an optimal balance between radial and axial load carrying capability.
Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and ceramic balls significantly reduces centrifugal forces and friction, enabling a high limiting speed of 34,000 rpm. This results in lower operating temperatures and higher attainable speeds.
Precision and Longevity: Manufactured to a P4A tolerance class, this bearing ensures minimal runout and vibration for ultra-precise applications. The hybrid ceramic construction offers increased stiffness, reduced wear, and longer service life compared to all-steel bearings, especially in high-speed and thermally challenging environments.
Sealed and Pre-lubricated: The bearing is sealed and pre-lubricated with grease, protecting it from contamination and providing reliable operation within its specified temperature range of -30°C to 110°C.
S71910 CE/HCP4ADT Bearing Typical Application Areas
The S71910 CE/HCP4ADT is specifically designed for high-performance machinery requiring the utmost precision and speed. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for aerospace and automotive manufacturing.
- Other Precision Equipment: High-speed robotics, dental handpieces, and specialized instrumentation.
