S71926 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71926 CD/P4ADGA
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
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
In Stock
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S71926 CD/P4ADGA Bearing Product Overview & Core Advantages
The S71926 CD/P4ADGA is a super-precision double row angular contact ball bearing designed for applications demanding exceptional rotational accuracy, high rigidity, and reliable performance under combined loads. Engineered to a P4A tolerance class, this bearing excels in high-speed scenarios, capable of handling significant radial loads and bidirectional axial loads simultaneously. Its compact design, featuring two rows of balls and a universal matchable (SU) configuration, makes it an ideal choice for high-precision spindles and other critical machinery where uncompromising accuracy and high rigidity are paramount.
S71926 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a 15° contact angle and a specific internal design optimized for high-speed operation and universal matching. |
| P4A | Denotes an exceptionally high tolerance class with tight dimensional and running accuracy, superior to ABEC 7/ISO P4. |
| DGA | Signifies that the bearing is universally matchable (SU) and comes pre-loaded in an extra light (A) preload class, ensuring optimal stiffness and minimal runout when paired. |
S71926 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design provides superior radial and axial stiffness, enabling the bearing to withstand substantial combined loads from multiple directions without significant deflection.
- Super-Precision Performance: Manufactured to P4A tolerances with a bore and outside diameter tolerance of -0.004mm to 0, this bearing guarantees exceptional running accuracy and minimal vibration for ultra-precise applications.
- Optimized High-Speed Operation: The phenolic cage is lightweight and robust, contributing to lower centrifugal forces and enabling a high limiting speed of 11,000 rpm. The standard grease lubrication is formulated for stable performance within this range.
- Universal Matchability (SU): Bearings with the SU designation can be mounted in various configurations (back-to-back, face-to-face, or tandem) without pre-selection, simplifying installation and providing design flexibility to achieve the desired rigidity and load capacity.
- Sealed & Pre-Lubricated: The sealed construction protects the precision internals from contaminants, while the factory-applied grease ensures immediate operation and long-term reliability within a temperature range of -30°C to 110°C.
S71926 CD/P4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision and speed are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines, high-frequency motors.
- Industrial Pumps & Compressors: For applications requiring high shaft rigidity and accuracy.
- Robotics: High-accuracy joints and rotary actuators.
- Medical Equipment: Dental handpieces and imaging device rotors.
