71806 CD/HCP4DGB
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71806 CD/HCP4DGB
Basic Information
System of measurement
Metric
Weight
0.048 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
42 mm
Outside diameter tolerance
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1609 lbf
Radial static load rating
1688 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
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71806 CD/HCP4DGB Bearing Product Overview & Core Advantages
The 71806 CD/HCP4DGB is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a universally matchable (SU) bearing supplied in a pre-loaded pair, it is designed to handle combined loads with high reliability. Its core advantages include superior running accuracy due to the P4 tolerance class, high-speed capability enabled by a phenolic cage and ceramic balls, and optimized performance for universal matching arrangements, providing designers with a compact and highly rigid solution.
71806 CD/HCP4DGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71806 | Basic bearing series and size designation. |
| CD | Indicates a universally matchable (SU) pair of bearings arranged in a back-to-back (DB) configuration. This provides high rigidity and moment load capacity. |
| HC | Signifies the use of Hybrid Ceramic balls, which reduce weight and centrifugal force, enabling higher speeds and longer service life. |
| P4 | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
| DGB | Indicates a Light preload (Class B) is applied to the bearing pair. This preload eliminates internal clearance, enhancing shaft rigidity and rotational accuracy. |
71806 CD/HCP4DGB Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The universal matchable (SU) pair in a back-to-back configuration creates a highly rigid bearing system that effectively resists moment loads. Combined with the P4 tolerance class, this ensures exceptional running accuracy and positional stability for the shaft.
- Superior High-Speed Performance: The combination of ceramic balls and a lightweight phenolic cage significantly reduces centrifugal forces and friction, allowing the bearing to achieve a high limiting speed of 100,500 rpm. This makes it ideal for high-speed spindle applications.
- Optimized Load Capacity: With a 15° contact angle, this bearing is designed to support significant combined radial and axial loads simultaneously. The preloaded pair ensures consistent load distribution and minimizes axial play.
- Extended Service Life: The hybrid ceramic construction offers superior wear resistance and is less susceptible to lubrication breakdown, contributing to a longer operational lifespan, especially in high-speed and high-temperature environments.
71806 CD/HCP4DGB Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for applications where maximum rotational accuracy and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Instruments: Measuring and testing equipment.
- High-Speed Motors and Drives: Electric spindles, high-frequency motors.
- Aerospace and Defense: Gyroscopes, navigation systems.
