71913 FE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71913 FE/HCP4ADGA
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
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
Price:
$ 600.58
/ each
In Stock
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71913 FE/HCP4ADGA Bearing Product Overview & Core Advantages
The 71913 FE/HCP4ADGA is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. Engineered to a P4A tolerance class, it delivers exceptional running accuracy and dimensional stability. Its core advantages stem from its ability to accommodate combined loads, its ceramic ball construction for reduced centrifugal forces and thermal expansion, and its universal matchable (SU) design, which allows for flexible mounting configurations in preloaded sets. This bearing is the ideal solution for spindles requiring maximum performance, reliability, and speed capability.
71913 FE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71913 FE/HCP4ADGA provides detailed technical specifications through its suffixes:
- 71913: Basic series designation for a super-precision, 65mm bore angular contact bearing.
- FE: Indicates a phenolic (polyamide) cage, which is lightweight and ideal for high-speed operation and low heat generation.
- HC: Signifies the use of Hybrid Ceramic balls (Silicon Nitride), offering advantages in high-speed performance and longevity.
- P4A: Denotes an ultra-precision tolerance class exceeding ABEC 7, ensuring extremely tight dimensional and running accuracy.
- DGA: Specifies a universal matchable (SU) bearing. Two bearings can be mounted in either a back-to-back (DB) or face-to-face (DF) arrangement with a consistent preload.
71913 FE/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and centrifugal forces. This directly enables a higher limiting speed and extends bearing service life, especially under demanding conditions.
- High Rigidity and Load Capacity: The 18° contact angle is optimized to support significant combined radial and axial loads. When mounted in preloaded pairs, the system achieves exceptional stiffness, which is critical for maintaining precision in machine tool spindles.
- Superior High-Speed Performance: The lightweight phenolic cage (FE) and ceramic balls work in concert to minimize inertial forces, allowing the bearing to reach its maximum limiting speed of 36,000 rpm with stability and reliability.
- Precision and Thermal Stability: Manufactured to P4A tolerance standards, this bearing guarantees minimal runout and precise rotational accuracy. The low thermal expansion of ceramic balls helps maintain preload and accuracy over a wide temperature range.
71913 FE/HCP4ADGA Bearing Typical Application Areas
The 71913 FE/HCP4ADGA is specified for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for integrally mounted motor designs.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
