71906 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71906 CD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.09 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2565 lbf
Radial static load rating
2059 lbf
Limiting speed
100.5 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:
$ 208.72
/ each
In Stock
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71906 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71906 CD/HCP4ADGA is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and speed. As a universally matchable (SU) bearing supplied in a pre-lubricated, matched pair, it is designed to accommodate combined loads (radial and axial) simultaneously. Its core advantages include superior high-speed performance enabled by a phenolic cage and ceramic balls, along with extra light preload (Class A) for minimal friction and high running accuracy. This configuration ensures high rigidity and stable operation in demanding precision environments.
71906 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71906 CD/HCP4ADGA provides detailed technical specifications through its suffixes:
- 71906: Denotes the bearing series and size (30mm bore, 47mm OD).
- C: Indicates a 15° contact angle, optimized for high-speed applications.
- D: Specifies an extra light preload (Class A).
- HC: Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4A: Identifies the tolerance class P4A, indicating very high dimensional and running accuracy.
- DG: Stands for Universal Matchable (SU), meaning the bearings are supplied as a matched set of two.
- A: Confirms the universal matching arrangement.
71906 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation, enabling higher limiting speeds and extended service life. The ceramic material also provides superior resistance to electrical erosion.
- Phenolic Cage: The lightweight and robust phenolic resin cage contributes to excellent high-speed performance and smooth operation at the limiting speed of 100,500 rpm.
- Precision & Preload: Manufactured to P4A tolerance class with an extra light preload, this bearing ensures high running accuracy, minimal system deflection, and rapid response, which is critical for high-precision spindles.
- Matched Set (SU): Supplied as a universally matchable pair, these bearings are designed to be mounted in a back-to-back or face-to-face arrangement, simplifying installation and ensuring optimal preload and performance.
71906 CD/HCP4ADGA Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Instrumentation: Measuring devices, optical scanners.
- High-Speed Motors: Spindles for PCB drilling, dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments.
