S71926 CD/P4ADGB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71926 CD/P4ADGB
Basic Information
System of measurement
Metric
Weight
3.16 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
180 mm
Outside diameter tolerance
-0.004mm to 0
Width
48 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
33300 lbf
Radial static load rating
48600 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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S71926 CD/P4ADGB Bearing Product Overview & Core Advantages
The S71926 CD/P4ADGB is a precision double-row angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. This metric bearing is distinguished by its P4A tolerance class, ensuring ultra-precise dimensions and running accuracy. Its double-row design provides high rigidity and the ability to support combined loads (radial and bidirectional axial loads) simultaneously. Pre-loaded as a Universal Matchable (SU) set, it offers optimized performance right out of the box, making it an ideal choice for high-speed spindles and other precision machinery.
S71926 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
| S71926 | Basic bearing designation for a double-row angular contact ball bearing with a 130 mm bore. |
| CD | Indicates a 15° contact angle and specific internal design optimized for high-speed operation. |
| P4A | Denotes an ultra-high precision tolerance class, exceeding ABEC 7/ISO P4 standards for superior running accuracy. |
| DGB | Signifies a Universal Matchable (SU) bearing pair, supplied as a pre-loaded set of two bearings for immediate installation and optimal performance. |
S71926 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double-row design and 15° contact angle provide superior radial and axial stiffness, enabling the bearing to handle significant combined loads with high stability.
- Precision & High-Speed Performance: Manufactured to a P4A tolerance class and featuring a lightweight phenolic cage, this bearing achieves smooth operation and a high limiting speed of 11,000 rpm.
- Optimized for Matched Sets: As a Universal Matchable (SU) pair, the two bearings are precision-ground to work in tandem, providing a defined preload (Light / Class B) for enhanced system rigidity without requiring complex adjustments.
- Durability & Reliability: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance and a long operational life under demanding conditions.
S71926 CD/P4ADGB Bearing Typical Application Areas
This high-precision bearing is specifically designed for advanced machinery where accuracy and speed are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring extreme running accuracy and minimal vibration.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Medical Equipment: High-speed rotors in dental handpieces and centrifuges.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
