71802 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71802 CD/P4DGA
Basic Information
System of measurement
Metric
Weight
0.014 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
835 lbf
Radial static load rating
675 lbf
Limiting speed
95 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
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71802 CD/P4DGA Bearing Product Overview & Core Advantages
The 71802 CD/P4DGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, it delivers superior runout control and dimensional stability. Its extra light preload (Class A) minimizes deflection under light loads, making it ideal for high-speed spindles and precision instruments. The bearing is universally matchable (SU), allowing two bearings to be paired in a back-to-back, face-to-face, or tandem arrangement to optimize performance for specific load and rigidity requirements.
71802 CD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71802 | Basic bearing series, indicating a super-precision, light-weight angular contact design with a 15mm bore. |
| CD | A 15° contact angle and specific internal design optimized for high-speed operation and universal matching. |
| P4 | The tolerance class, denoting very high precision levels for dimensional and running accuracy. |
| DGA | Indicates the bearing is lubricated and supplied as part of a universally matchable (SU) pair. |
71802 CD/P4DGA Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The P4 tolerance class and phenolic cage ensure minimal vibration and exceptional dimensional stability, which is critical for maintaining accuracy under high rotational speeds.
- Optimized for High Speeds: With a limiting speed of 95,000 rpm, the combination of the 15° contact angle, lightweight phenolic cage, and optimized internal geometry minimizes centrifugal forces and friction.
- Superior Load Capacity: Engineered to handle combined loads (radial and axial), with a dynamic load rating of 835 lbf and a static load rating of 675 lbf, providing reliable performance in demanding conditions.
- Universal Matching Capability (SU): This feature allows for precise preload control and system rigidity by pairing two bearings, enabling customization for specific application requirements in spindle design.
- Premium Materials: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance within a temperature range of -30°C to 110°C.
71802 CD/P4DGA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling applications.
- Precision Instrumentation: Used in measuring devices, optical scanners, and laboratory equipment.
- High-Frequency Motors and Spindles: Ideal for PCB drilling spindles and dental handpieces.
- Aerospace & Defense Systems: Applications requiring reliable, high-speed rotational components.
