71940 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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71940 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71940 CD/HCP4ADGA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to a P4A tolerance class, it offers superior dimensional stability and running accuracy. A key feature is its Universal Matchable (SU) designation, allowing two bearings to be universally paired in a back-to-back (DB) or face-to-face (DF) arrangement without selective mounting, simplifying installation and optimizing system rigidity. The use of ceramic balls and a phenolic cage contributes to its high-speed capability, reduced weight, and excellent performance under challenging conditions.
71940 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71940 | Basic bearing series and size designation. |
| CD | Indicates a 15° contact angle and specific internal design optimized for high rigidity and speed. |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4A | Denotes a high-precision tolerance class with enhanced running accuracy and dimensional control. |
| DGA | Specifies a Universal Matchable (SU) bearing, pre-lubricated and ready for universal pairing. |
71940 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and 15° contact angle enable the bearing to support significant combined loads (radial and axial). The Universal Matchable (SU) feature allows for the creation of pre-loaded pairs, dramatically increasing system stiffness.
- High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage allows for a high limiting speed of 6,300 rpm. This design minimizes friction and heat generation.
- Precision & Longevity: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for precision applications. The hybrid ceramic construction offers improved durability and resistance to wear.
- Optimized for Matched Sets: Designed to be used in matched sets of 2, these bearings are supplied pre-lubricated and are ready for installation in pre-loaded arrangements, ensuring optimal performance from the start.
71940 CD/HCP4ADGA Bearing Typical Application Areas
The 71940 CD/HCP4ADGA is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
