S71910 ACE/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71910 ACE/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.25 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
3668 lbf
Limiting speed
34 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
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In Stock
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S71910 ACE/P4ADGA Bearing Product Overview & Core Advantages
The S71910 ACE/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-matched pair, it delivers outstanding rigidity and stability. Its P4A tolerance class ensures ultra-precise running, making it ideal for handling combined loads (radial and axial) simultaneously. The phenolic cage and grease lubrication contribute to its high-speed capabilities and reliable operation in demanding environments.
S71910 ACE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71910 | Basic bearing designation (Super-precision, 50mm bore, 72mm OD, 24mm width) |
| ACE | Contact angle of 25° (A), Phenolic (C) cage, Extra light preload (Class A) |
| P4A | High precision tolerance class (exceeding ABEC 7/ISO P4) |
| DGA | Universal Matchable (SU) bearing pair, ready for mounting in either X or O arrangement |
S71910 ACE/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The dual bearing matched set provides significantly increased rigidity and can support substantial combined radial and axial loads due to the 25° contact angle.
- Superior High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the optimized internal design and grease lubrication enable a high limiting speed of 34,000 rpm.
- Exceptional Running Accuracy: Manufactured to P4A tolerance class with very tight dimensional tolerances on the bore, outside diameter, and width, ensuring minimal runout and vibration.
- Pre-Matched for Ease of Use: Supplied as a universal matchable (SU) pair, these bearings are pre-configured to be mounted in a back-to-back (O) or face-to-face (X) arrangement without requiring selective matching, simplifying installation and guaranteeing optimal performance.
S71910 ACE/P4ADGA Bearing Typical Application Areas
This super-precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (for grinding, milling, and turning)
- High-Frequency Spindle Motors
- Precision Instrumentation and Robotic Drives
- High-Speed Pumps and Compressors
