71913 CE/HCP4ALDGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71913 CE/HCP4ALDGA
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
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6075 lbf
Radial static load rating
5512 lbf
Limiting speed
31 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
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71913 CE/HCP4ALDGA Bearing Product Overview & Core Advantages
The 71913 CE/HCP4ALDGA is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. As a universal matchable (SU) bearing supplied in a pre-lubricated, matched pair, it is designed to accommodate combined loads (radial and axial) simultaneously. Its defining characteristics include an Extra Light (Class A) preload, a P4A super-precision tolerance class, and a hybrid ceramic ball construction, making it an ideal solution for high-speed spindles and other high-reliability machinery where rigidity, low heat generation, and extended service life are critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing series and size designation (65mm bore, 90mm OD). |
| CE | Contact angle of 15°. |
| HC | Hybrid Ceramic construction, indicating ceramic balls. |
| P4A | Super precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| A | Specifies an Extra Light preload. |
| LD | Light Duty designation for the phenolic cage. |
| GA | Indicates the bearing is part of a Universal Matchable (SU) pair. |
71913 CE/HCP4ALDGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls with a chrome steel ring significantly reduces friction, heat generation, and wear. This construction enables higher limiting speeds, provides electrical insulation, and extends lubrication life, contributing to superior high-speed performance.
- Precision & Rigidity: The P4A tolerance class and Class A preload ensure minimal runout and high rotational accuracy. This setup provides excellent system rigidity, reduces vibration, and is crucial for maintaining precision under combined loads.
- Optimized Cage & Lubrication: The lightweight phenolic cage is designed for high-speed stability and reduced centrifugal forces. The bearing is pre-lubricated to operate effectively within a wide temperature range of -30°C to 110°C, ensuring immediate startup and reliable performance.
- Universal Matchability (SU): Supplied as a matched pair, these bearings can be arranged in tandem, back-to-back, or face-to-face configurations without the need for selective mounting, simplifying installation and optimizing performance for specific load conditions.
71913 CE/HCP4ALDGA Bearing Typical Application Areas
This bearing is specifically designed for high-end, demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring the utmost in rotational accuracy and surface finish quality.
- High-Frequency Motors and Spindles: Where low friction and heat management are paramount.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and other critical rotating assemblies.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
