S71922 ACD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71922 ACD/P4ADGA
Basic Information
System of measurement
Metric
Weight
1.76 kg
Tolerance class
P4A
Seal type
Sealed
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
10 X 1000 rpm
Lubrication
Grease
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
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 853.45
/ each
In Stock
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S71922 ACD/P4ADGA Bearing Product Overview & Core Advantages
The S71922 ACD/P4ADGA is a high-precision double row angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to accommodate combined loads (radial and bidirectional axial loads) simultaneously, this bearing features a universal matchable (SU) design, allowing two bearings to be paired in any combination to achieve the desired preload or clearance. Its P4A tolerance class ensures ultra-precision operation, making it ideal for high-speed spindles and other critical machinery where high rigidity and superior running accuracy are paramount.
S71922 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance & Benefit |
|---|---|---|
| S71922 | Basic bearing designation (Double Row Angular Contact, 110mm Bore, 150mm OD, 40mm Width) | Defines the core bearing dimensions and type. |
| ACD | 25° Contact Angle, Double Row Design | Optimized for handling significant axial loads from both directions. |
| P4A | High Precision Tolerance Class (Superior to ABEC 7) | Ensures minimal runout and vibration for high-precision applications. |
| DGA | Universal Matchable (SU) bearing set, "A" preload | Enables simplified bearing pairing for precise preload control without selective matching. |
S71922 ACD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design, combined with a 25° contact angle, provides superior stiffness and enables the bearing to support substantial combined radial and axial loads. The high dynamic (21,510 lbf) and static (30,825 lbf) load ratings confirm its robust performance.
- Precision & High-Speed Performance: Manufactured to P4A tolerance standards with a lightweight, high-strength phenolic cage, this bearing achieves excellent rotational accuracy and is capable of operating at high speeds (limiting speed of 10,000 rpm).
- Sealed & Pre-Lubricated for Longevity: As a sealed bearing pre-filled with grease lubrication, it is protected from contamination and is effectively maintenance-free within its specified temperature range (-30°C to 110°C).
- Universal Matchability (SU): This feature allows any two S71922 ACD/P4ADGA bearings to be mounted together adjacently, simplifying installation and inventory management while ensuring optimal performance.
S71922 ACD/P4ADGA Bearing Typical Application Areas
This precision bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary units requiring high rigidity and accuracy.
- Medical Equipment: High-speed centrifuges and imaging device rotors.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other precision mechanisms.
- High-Frequency Motors & Spindles: Where minimal runout and high-speed capability are critical.
