71922 ACD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71922 ACD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
1.45 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
21510 lbf
Radial static load rating
30825 lbf
Limiting speed
16 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
Price:
$ 615.12
/ each
In Stock
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71922 ACD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71922 ACD/HCP4ADGA is a precision angular contact ball bearing engineered for applications demanding high rigidity and exceptional running accuracy. As a universal matchable (SU) bearing supplied in a pre-matched duplex set, it is designed to accommodate combined loads (radial and axial) simultaneously. Its ceramic balls and P4A super-precision tolerance make it an ideal solution for high-speed spindle applications, offering superior performance, extended service life, and reliable operation.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD). |
| ACD | Contact angle of 25° and universal matchable (DULEX SET) design. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls for reduced friction and higher speed capability. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional running accuracy. |
| DGA | Designates a pre-loaded duplex set with Extra Light (Class A) preload, optimized for high rigidity and minimal deflection. |
71922 ACD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Axial Load Capacity: The duplex pair configuration and 25° contact angle provide superior stiffness, enabling the bearing to handle significant combined radial and axial loads from both directions with minimal deflection.
- Ultra-High-Speed Performance: The combination of hybrid ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage allows for a very high limiting speed of 16,000 rpm, making it suitable for demanding spindle applications.
- Precision and Accuracy: Manufactured to a P4A super-precision tolerance class, this bearing ensures extremely low runout and vibration, which is critical for achieving high surface finish and machining accuracy.
- Universal Matchability (SU): As a universal matchable bearing, the two bearings in the set can be arranged in various configurations (back-to-back, face-to-face, or tandem) to optimize performance for specific load and stiffness requirements.
71922 ACD/HCP4ADGA Bearing Typical Application Areas
This high-performance bearing is specifically designed for advanced machinery requiring the utmost precision and speed:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Machining Centers
- Advanced Robotics (e.g., high-precision robotic arms and joints)
- Aerospace & Defense components (e.g., gyroscopes, navigation systems)
