71924 ACE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71924 ACE/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
1.86 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
165 mm
Outside diameter tolerance
-0.004mm to 0
Width
44 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
16380 lbf
Radial static load rating
17212 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71924 ACE/HCP4ADGA Bearing Product Overview & Core Advantages
The 71924 ACE/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universal matchable bearing features a 25° contact angle and an extra light preload (Class A), making it ideal for spindle arrangements where high rigidity and minimal deflection are critical. Its open seal type allows for custom lubrication solutions, while the combination of ceramic balls and a phenolic cage enables superior high-speed performance and reduced rotational mass. This bearing is engineered to handle combined loads efficiently, providing reliable operation in precision machinery.
71924 ACE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | 25° contact angle, optimized for high-speed operation and radial load capacity. |
| HC | Hybrid Ceramic: Features ceramic balls for reduced friction, higher speed capability, and longer service life. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional running accuracy. |
| DGA | Universal Matchable (SU): Bearings are supplied as a matched set of 2 and can be arranged in various configurations (back-to-back, face-to-face, or tandem) to optimize stiffness and load handling. |
71924 ACE/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width. The universal matchable design allows for pre-configured sets that deliver high system stiffness and precise rotational accuracy.
- Superior High-Speed Performance: The hybrid ceramic design with silicon nitride balls and a lightweight phenolic cage significantly reduces centrifugal forces, enabling a high limiting speed of 10,000 rpm. This combination minimizes heat generation and ensures stable operation at high velocities.
- Enhanced Load Capacity: The 25° contact angle is engineered to support significant combined radial and axial loads. With a high dynamic load rating, this bearing offers reliable performance under demanding operating conditions.
- Optimized for Precision Applications: The extra light preload (Class A) minimizes deflection and ensures smooth, precise rotation with minimal friction, which is critical for applications like machine tool spindles.
71924 ACE/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring utmost precision and rigidity.
- Precision Robotics: Articulated arms and CNC machinery where accuracy and high-speed operation are paramount.
- High-Speed Motors and Drives: Applications demanding low friction, high rotational speeds, and long-term reliability.
- Medical and Dental Equipment: High-speed handpieces and diagnostic scanners that require smooth, quiet, and precise bearing performance.
- Aerospace and Defense Systems: Gyroscopes, avionics, and other critical systems where performance and reliability under extreme conditions are essential.
