71902 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71902 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.014 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
28 mm
Outside diameter tolerance
-0.005mm to 0
Width
7 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
13
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
893 lbf
Radial static load rating
428 lbf
Limiting speed
110 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 171.98
/ each
In Stock
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71902 CD/HCP4A Bearing Product Overview & Core Advantages
The 71902 CD/HCP4A is a single-row angular contact ball bearing engineered for high-precision and high-speed applications. Its design is optimized to support significant combined loads (radial and axial) in one direction, making it ideal for scenarios requiring exceptional rotational accuracy and rigidity. Manufactured to P4 (ABEC-7) tolerance class and featuring a phenolic cage and ceramic balls, this bearing delivers superior performance, reduced friction, and extended service life in demanding operational environments.
71902 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71902 | Basic bearing series and size designation (15mm bore, 28mm OD). |
| CD | Indicates a 15° contact angle and optimized internal design for high-speed operation. |
| HC | Signifies the use of Hybrid Ceramic balls (ceramic balls with steel rings). |
| P4A | Denotes a P4 (ABEC-7) tolerance class and specific internal running accuracy. |
71902 CD/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a lightweight phenolic cage, low-friction ceramic balls, and a 15° contact angle enables a very high limiting speed of 110,000 rpm, making it an exceptional high-speed bearing.
- Rigidity and Load Capacity: The angular contact design provides high rigidity and is capable of handling significant combined radial and axial loads simultaneously.
- Precision Performance: Manufactured to P4 super-precision tolerance, this bearing ensures minimal runout and vibration, which is critical for applications requiring extreme accuracy.
- Hybrid Advantages: The use of ceramic balls reduces weight, minimizes thermal expansion, and provides superior performance in lubricant-starved or electrically sensitive environments.
- Preload Availability: The bearing is supplied with a preload, enhancing system stiffness and rotational accuracy from the moment of installation.
71902 CD/HCP4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- High-Speed Spindles in CNC machining centers and precision grinding machines
- Turbochargers and other high-RPM automotive/aerospace components
- High-Frequency Machining Spindles
- Precision Instrumentation and medical device rotors
- Advanced Robotics and servo motors
