71911 FEGA/HCPA9A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71911 FEGA/HCPA9A
Basic Information
System of measurement
Metric
Weight
0.14 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
80 mm
Outside diameter tolerance
-0.004mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
18 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3442 lbf
Radial static load rating
2340 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
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In Stock
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71911 FEGA/HCPA9A Bearing Product Overview & Core Advantages
The 71911 FEGA/HCPA9A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a single bearing with Extra Light (Class A) preload, it delivers superior rotational precision and minimal running torque. Its optimized design enables it to handle combined loads efficiently, making it ideal for high-rigidity, high-reliability systems. The use of ceramic balls and a phenolic cage further enhances its performance in demanding environments.
71911 FEGA/HCPA9A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| FEGA | Indicates the bearing is lubricated and features a specific internal design for optimized performance |
| HCPA9A | Denotes the tolerance class PA9A (ultra-high precision) and universal matching capability (SU designation) |
71911 FEGA/HCPA9A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to PA9A tolerance class with Extra Light preload, ensuring minimal deflection and superior running accuracy under load
- Enhanced Speed Capability: The combination of ceramic balls (reduced centrifugal forces) and phenolic cage enables exceptional limiting speeds up to 34,000 rpm
- Superior Load Capacity: With a 18° contact angle and optimized internal geometry, it effectively handles combined radial and axial loads
- Universal Matching Design: Designed as Universal Matchable (SU), allowing precise axial play adjustment when mounted with a second bearing
- Temperature Stability: Suitable for operating temperatures from -30°C to 110°C, maintaining performance across varied conditions
71911 FEGA/HCPA9A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding applications
- Precision Instrumentation: Medical devices, measuring equipment, and optical systems
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- High-Speed Motors: Spindle motors, turbochargers, and specialized drive systems
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
