71940 CD/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71940 CD/HCP4ADGB Bearing Product Overview & Core Advantages
The 71940 CD/HCP4ADGB is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and reliability. This universal matchable (SU) bearing is designed to accommodate combined loads (radial and axial) simultaneously, making it ideal for high-rigidity, high-speed configurations. Its P4A tolerance class ensures ultra-precision operation, while the ceramic ball construction and phenolic cage contribute to superior performance in challenging environments.
71940 CD/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71940 | Basic bearing series and size designation |
| CD | 15° contact angle and optimized internal design |
| HC | Hybrid ceramic balls (steel rings with ceramic balls) |
| P4A | Ultra-precision tolerance class |
| DGB | Universal matchable (SU) arrangement in duplex pair |
71940 CD/HCP4ADGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design with 15° contact angle provides excellent resistance to combined loads. The universal matchable (SU) configuration allows for flexible mounting arrangements while maintaining high rigidity support.
Enhanced Speed Performance: The phenolic cage and ceramic balls significantly reduce centrifugal forces, enabling higher limiting speeds (6,300 rpm) while maintaining dimensional stability.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
Advanced Material Technology: Hybrid construction with chrome steel rings and ceramic balls provides superior wear resistance, reduced thermal expansion, and extended service life in high-speed applications.
71940 CD/HCP4ADGB Bearing Typical Application Areas
- Machine tool spindles for high-precision machining centers
- High-speed machining equipment requiring superior accuracy
- Precision grinding spindles in manufacturing applications
- Aerospace components and navigation systems
- Medical equipment requiring high reliability and precision
- Robotic arm joints and precision positioning systems
