S71922 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71922 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.88 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
20 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
13162 lbf
Radial static load rating
15300 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
3
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
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In Stock
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S71922 ACDGA/P4A Bearing Product Overview & Core Advantages
The S71922 ACDGA/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This sealed bearing features an extra light preload (Class A) and a 25° contact angle, enabling it to handle combined loads—significant radial loads and axial loads in one direction—with high operational stability. Manufactured to P4A tolerance class, it offers superior running accuracy, making it ideal for high-speed spindles and other precision machinery where high rigidity and minimal runout are critical.
S71922 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Universal Matchable (SU) bearing, supplied in a set of 3 for precise preload matching. |
| P4A | High precision tolerance class exceeding ABEC 7, ensuring extremely tight dimensional and running accuracy. |
S71922 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and phenolic cage provide excellent structural stability, supporting high radial and one-direction axial loads. The extra light preload eliminates internal clearance, enhancing system stiffness for precise positioning.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the grease lubrication and optimized internal geometry contribute to a high limiting speed of 10,000 rpm.
- Sealed & Pre-Lubricated for Long Life: The integral seals protect against contamination and retain lubricant, enabling maintenance-free operation. Pre-filled grease supports a wide temperature range from -30°C to 110°C.
- Precision Engineering: Manufactured from chrome steel with ultra-tight tolerances on the bore diameter, outside diameter, and width, ensuring consistent performance in the most demanding applications.
S71922 ACDGA/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-Frequency Motors
- Medical Equipment Spindles
- Aerospace Control Systems
