71913 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71913 ACEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.17 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
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3510 lbf
Radial static load rating
2610 lbf
Limiting speed
36 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
No drawings available at the moment, will be launched soon
Price:
$ 244.08
/ each
In Stock
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71913 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The 71913 ACEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with ceramic balls and a phenolic cage, this bearing delivers superior high-speed capabilities and reduced rotational mass. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for spindle applications where minimal runout and vibration are critical. The bearing is pre-lubricated and features a 25° contact angle, optimized to handle combined radial and axial loads simultaneously with high rigidity.
71913 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| EGA | Universal Matchable (SU designation). Two bearings are manufactured as a matched set for precise preload and alignment. |
| HC | Hybrid Ceramic: Features ceramic balls for reduced weight, higher speed, and longer service life. |
| P4A | Super Precision Tolerance Class, exceeding ABEC 7/ISO P4 standards for exceptional dimensional and running accuracy. |
71913 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and universal matching enable the bearing pair to handle significant combined loads (radial and axial) with high system rigidity.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a very high limiting speed of 36,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on bore diameter, outside diameter, and width, ensuring smooth, quiet, and accurate operation.
- Extended Service Life: The hybrid ceramic construction offers improved resistance to wear and a wider temperature range (-30°C to 110°C) compared to all-steel bearings.
71913 ACEGA/HCP4A Bearing Typical Application Areas
This bearing is specifically engineered for high-performance machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors: Spindles for PCB drilling and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical instrumentation.
