S71906 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71906 CD/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.098 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2565 lbf
Radial static load rating
2059 lbf
Limiting speed
100.5 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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S71906 CD/P4ADGA Bearing Product Overview & Core Advantages
The S71906 CD/P4ADGA is a super-precision angular contact ball bearing designed for the most demanding applications. Engineered to a P4A tolerance class, it delivers exceptional rotational accuracy and dimensional stability. Its key advantage lies in its ability to handle combined loads—simultaneously supporting significant radial loads and axial loads in one direction—making it ideal for high-speed spindles and precision machinery requiring high rigidity and minimal runout.
S71906 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings. |
| 1906 | Bore size 30 mm, Outside diameter 47 mm, Width 18 mm. |
| C | 15° contact angle. |
| D | Enhanced internal design for high stiffness. |
| P4A | High precision class with tolerances stricter than ABEC 7. |
| DG | Universal Matchable (SU) arrangement. Two bearings are supplied as a matched set. |
| A | Extra light preload for optimal stiffness and minimal heat generation at high speeds. |
S71906 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4A tolerance class and extra light preload ensure superior running accuracy and system stability, critical for applications with minimal deflection requirements.
- Optimized Load Capacity: The 15° contact angle and robust internal geometry provide an excellent balance, capable of handling high radial dynamic load ratings of 2565 lbf and axial loads simultaneously.
- Superior High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the optimized internal design contributes to a high limiting speed of 100,500 rpm, making it a true high-speed bearing.
- Matched Set Configuration: Supplied as a universal matchable (SU) pair, these bearings can be arranged in back-to-back (DB), face-to-face (DF), or tandem (DT) configurations to support complex combined loads and moments.
S71906 CD/P4ADGA Bearing Typical Application Areas
The S71906 CD/P4ADGA is engineered for high-performance machinery where precision, speed, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Medical and Laboratory Equipment: Centrifuges and precision instruments.
