71913 FE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71913 FE/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
0.34 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
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
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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/HCP4ADBA Bearing Product Overview & Core Advantages
The 71913 FE/HCP4ADBA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex back-to-back (DB) matched pair configuration provides superior rigidity and stability, enabling it to handle combined loads (radial and axial) simultaneously. Manufactured to P4A tolerance class and featuring a ceramic ball and phenolic cage construction, it is engineered for high-speed operation and extended service life in precision machinery.
Model Code Breakdown
The model number 71913 FE/HCP4ADBA decodes as follows:
- 71913: Basic bearing series and size designation (65mm bore, 90mm OD).
- FE: Indicates the bearing is lubricated.
- HC: Denotes the use of Hybrid Ceramic balls (steel rings with ceramic balls).
- P4A: Specifies the tolerance class, indicating very high running accuracy and dimensional precision.
- DB: Identifies the Duplex Back-to-Back mounting arrangement of the matched pair.
- A: Specifies an Extra Light preload applied to the bearing set.
71913 FE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads, making it ideal for applications where shaft deflection must be minimized.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic (Si3N4) balls reduces centrifugal forces, enabling higher limiting speeds (36,000 rpm) and lower operating temperatures.
- Extended Service Life & Reliability: Hybrid ceramic construction offers enhanced durability, particularly in potentially corrosive or electrically sensitive environments. The P4A precision grade ensures smooth, quiet, and vibration-free operation.
- Optimized Load Capacity: With an 18° contact angle and a dynamic load rating of 5962 lbf, this bearing is engineered to handle significant combined radial and axial loads.
71913 FE/HCP4ADBA Bearing Typical Application Areas
This high-precision bearing is specifically designed for advanced applications where speed, accuracy, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and auxiliary power units.
- High-Frequency Motors & Spindles: PCB drilling spindles, dental handpieces.
