71900 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71900 CDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.009 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
22 mm
Outside diameter tolerance
-0.004mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
565 lbf
Radial static load rating
248 lbf
Limiting speed
165 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
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In Stock
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71900 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 71900 CDGA/HCP4A is a single-row angular contact ball bearing engineered for ultra-high precision and high-speed performance. Operating under the stringent P4A tolerance class, it delivers exceptional rotational accuracy and dimensional stability. Its 15° contact angle is optimized for handling combined loads, efficiently supporting both radial and significant axial loads in one direction. Featuring a phenolic cage and ceramic balls, this bearing is designed for demanding applications requiring superior speed capability, minimal friction, and high operational reliability.
71900 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| 71900 | Basic bearing series designation, indicating a 10 mm bore diameter, 22 mm outside diameter, and 6 mm width. |
| CD | Indicates a 15° contact angle. |
| GA | Specifies Universal Matchable (SU) pairing. Two bearings are supplied as a matched set for preload control. |
| H | Indicates the bearing is pre-lubricated. |
| C | Specifies the cage material as Phenolic. |
| P4A | Denotes the ultra-high precision tolerance class, exceeding ABEC 7 standards for exceptional running accuracy. |
71900 CDGA/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls significantly reduces centrifugal forces, enabling a very high limiting speed of 165,000 rpm. This design minimizes friction and heat generation.
- Precision & Rigidity: Manufactured to P4A tolerance class with a 15° contact angle and Extra Light preload, this bearing provides superior running accuracy, high system rigidity, and precise shaft positioning.
- Combined Load Capacity: The angular contact design is inherently capable of supporting combined radial and axial loads simultaneously, making it ideal for complex loading conditions.
- Universal Matching: As a Universal Matchable (SU) bearing supplied in a matched set of 2, it simplifies installation and ensures optimal preload and performance when arranged in pairs (back-to-back or face-to-face).
- Open Design & Lubrication: The open seal type allows for optimal lubrication flow and heat dissipation. The bearing is pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
71900 CDGA/HCP4A Bearing Typical Application Areas
- High-Speed Spindles for CNC machining centers and PCB drilling machines
- Precision Instrumentation and medical devices
- High-Frequency Motors and turbo-molecular pumps
- Aerospace auxiliary systems and instrumentation
- Semiconductor Manufacturing Equipment
