71913 FE/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71913 FE/P4ADGA Bearing Product Overview & Core Advantages
The 71913 FE/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As part of the Universal Matchable (SU) series, it is manufactured to P4A tolerance class and features an Extra Light (A) preload. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high precision, making it ideal for high-speed spindles and other precision machinery where minimal runout and high system stiffness are critical.
71913 FE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing designation, indicating a super-precision angular contact bearing series with a 65 mm bore, 90 mm OD, and 26 mm width. |
| FE | Designates a phenolic (Phenolic) cage, which is lightweight and suitable for high-speed operation, contributing to lower friction and higher limiting speeds. |
| P4A | Indicates the tolerance class P4A, which defines extremely tight dimensional and running accuracy tolerances for superior precision. |
| DGA | Signifies the Universal Matchable (SU) designation and the Extra Light preload (A). This means the bearing is supplied lubricated and is one of a set of two bearings that can be universally matched in any combination to achieve the desired preload. |
71913 FE/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The angular contact design with a 18° contact angle and P4A tolerance class ensures high system stiffness and exceptional running accuracy, critical for applications with minimal deflection requirements.
Superior Load Capacity: Engineered to support combined radial and axial loads simultaneously. With a dynamic load rating of 5962 lbf and a static load rating of 5512 lbf, it offers reliable performance under demanding conditions.
High-Speed Performance: The lightweight phenolic cage (FE) reduces centrifugal forces, enabling a high limiting speed of 36,000 rpm. The open design allows for efficient lubrication management in high-speed systems.
Optimized for Matched Sets: As a Universal Matchable (SU) bearing, it is supplied as one of a set of two. This allows for flexible mounting arrangements (back-to-back, face-to-face, or tandem) to optimize preload and system performance.
71913 FE/P4ADGA Bearing Typical Application Areas
The 71913 FE/P4ADGA is ideally suited for high-precision, high-speed applications, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling spindles requiring high rigidity and accuracy.
- High-Speed Motors & Spindles: Used in electric motors, high-frequency spindles, and other rotary systems where speed and precision are paramount.
- Precision Instrumentation: Applicable in measuring instruments, optical scanners, and other precision devices.
- Aerospace & Defense Systems: For gyroscopes, radar systems, and other critical components demanding reliable performance under high speeds.
