71913 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71913 CD/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.42 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
26 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7470 lbf
Radial static load rating
7538 lbf
Limiting speed
31 X 1000 rpm
Lubrication
Lubricated
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
Price:
$ 276.8
/ each
In Stock
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71913 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71913 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universally matchable (SU) bearing supplied in a pre-lubricated, matched set of two, it is engineered to accommodate combined radial and axial loads simultaneously. Its P4A tolerance class and extra light preload (Class A) ensure smooth, high-precision operation, making it ideal for high-speed spindles and other high-reliability machinery.
71913 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing series and size designation (65mm bore, 90mm OD). |
| CD | Contact angle of 15°, optimized for high-speed performance and axial load capacity. |
| P4A | High precision tolerance class, exceeding ABEC-7 standards, ensuring minimal runout and vibration. |
| DGA | Universal Matchable (SU) designation. The two bearings in the set are manufactured to be mounted in a universal arrangement (face-to-face, back-to-back, or tandem) to achieve the required rigidity and preload. |
71913 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and use as a matched set provide superior rigidity, enabling the bearing to handle significant combined loads (radial and axial) from any direction.
- High-Speed Performance: The lightweight phenolic cage and 15° contact angle are optimized for low friction and stable operation at high rotational speeds, with a limiting speed of 31,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance with an extra light preload, this bearing guarantees high running accuracy, reduced noise, and extended service life in precision applications.
- Pre-Lubricated & Ready-to-Install: The bearing is pre-lubricated, simplifying installation and providing immediate protection. The open seal type allows for re-lubrication if required by the application.
71913 CD/P4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace & Defense Instrumentation
