71924 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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71924 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71924 CD/HCP4ADGA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing features a 15° contact angle and is supplied as a pre-matched pair (set of 2), enabling it to handle combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it offers superior running accuracy and high rigidity. The use of ceramic balls and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it ideal for high-precision, high-reliability machinery.
71924 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71924 | Basic bearing series and size designation (120 mm bore, 165 mm OD, 44 mm width). |
| CD | Indicates a 15° contact angle and a universal matchable (SU) design. Two bearings can be mounted in either a back-to-back (DB) or face-to-face (DF) arrangement to optimize load handling. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls, which reduce weight, friction, and heat generation. |
| P4A | Denotes the tolerance class, specifying very high precision for both dimensional and running accuracy, exceeding ABEC 7 standards. |
| DGA | Indicates the bearing is lubricated and specifies the type of high-performance grease used, suitable for the specified temperature range. |
71924 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The universal matchable pair arrangement allows for a rigid bearing system that effectively supports combined loads and moments. The 15° contact angle is optimized for applications with significant axial loads.
High-Speed Performance: The combination of hybrid ceramic balls and a lightweight, robust phenolic cage enables very high limiting speeds (10,000 rpm). Ceramic balls reduce centrifugal forces and skidding, while the phenolic cage ensures stable operation at high rotational velocities.
Precision and Longevity: Manufactured to P4A super-precision standards, this bearing ensures minimal runout and vibration. The open seal type allows for optimal lubrication management in controlled environments, and the pre-lubrication provides immediate operational readiness.
71924 CD/HCP4ADGA Bearing Typical Application Areas
This high-precision bearing is engineered for advanced machinery where accuracy, speed, and reliability are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and scientific equipment.
- High-Frequency Motors and Spindles: Applications requiring low inertia and minimal thermal expansion.
- Aerospace and Defense Systems: Gyroscopes, navigation systems, and other critical components.
