71913 FE/HCPA9ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71913 FE/HCPA9ADGA
Basic Information
System of measurement
Metric
Weight
0.34 kg
Tolerance class
PA9A
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
18 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5962 lbf
Radial static load rating
5512 lbf
Limiting speed
36 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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71913 FE/HCPA9ADGA Bearing Product Overview & Core Advantages
The 71913 FE/HCPA9ADGA is a precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This universal matchable (SU) bearing is designed to accommodate combined loads (radial and axial) simultaneously, with its 18° contact angle optimized for high-speed operation. Its construction featuring ceramic balls and phenolic cage enables superior performance, including reduced friction, lower operating temperatures, and a limiting speed of 36,000 rpm. The extra light preload (Class A) ensures smooth, precise rotation, making it ideal for high-reliability, high-precision machinery.
71913 FE/HCPA9ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| FE | Steel machined window-type cage, pressed and centred on outer ring |
| HC | Hybrid Ceramic: Ceramic balls (typically Silicon Nitride, Si3N4) with steel rings |
| PA9A | High-Precision Tolerance Class (superior to ABEC 7/ISO P4), ensuring minimal runout and vibration |
| DGA | Universal Matchable (SU): Two bearings can be mounted in a universal arrangement (face-to-face, back-to-back, or tandem) without selective assembly |
71913 FE/HCPA9ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation, extends service life, and allows for operation at higher speeds. Ceramic balls are also electrically insulating and resistant to corrosion.
- High-Speed Capability: The lightweight phenolic resin cage (FE) and optimized internal geometry contribute to the exceptionally high limiting speed of 36,000 rpm, making it a true high-speed bearing.
- Precision & Rigidity: Manufactured to PA9A tolerance class, this bearing provides extremely precise running accuracy and high system rigidity, which is critical for applications like machine tool spindles.
- Universal Matching (SU): The DGA suffix indicates that bearings are universally matchable. This simplifies mounting and allows for precise preload control in duplex sets, enhancing overall system stiffness and rotational accuracy.
- High Load Capacity: With a dynamic load rating of 5962 lbf and static load rating of 5512 lbf, it reliably handles significant combined loads.
71913 FE/HCPA9ADGA Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Robotics (Articulated arm joints, high-accuracy actuators)
- High-Frequency Motors and Spindles
- Aerospace & Defense Systems (Gyroscopes, navigation systems)
- Medical Equipment (Dental handpieces, high-speed centrifuges)
