71806 CDGA/HCP4
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71806 CDGA/HCP4
Basic Information
System of measurement
Metric
Weight
0.024 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
7 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
994 lbf
Radial static load rating
844 lbf
Limiting speed
83 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
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
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71806 CDGA/HCP4 Bearing Product Overview & Core Advantages
The 71806 CDGA/HCP4 is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. As a single bearing with an extra light preload (Class A), it provides superior rotational accuracy and rigidity. Its defining characteristic is the ability to accommodate combined loads—simultaneously handling radial and axial forces. The use of ceramic balls and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it ideal for high-speed spindles and other precision machinery.
71806 CDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71806 | Basic bearing designation indicating the bearing size (30mm bore, 42mm OD, 7mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| DG | Indicates the bearing is Universal Matchable (SU), allowing it to be mounted in pairs or sets (back-to-back, face-to-face, or tandem) to achieve specific stiffness and load requirements. |
| A | Denotes an Extra Light Preload. This pre-set internal clearance provides high running accuracy and system rigidity without excessive heat generation. |
| HCP4 | The P4 suffix signifies a high-precision tolerance class, ensuring extremely tight dimensional and running accuracy. The "HC" typically relates to the cage and material specification (Phenolic). |
71806 CDGA/HCP4 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class with an extra light preload, this bearing delivers exceptional running accuracy and system stiffness, minimizing deflection under load.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage enables a very high limiting speed of 83,000 rpm, making it a true high-speed bearing.
- Optimized Load Capacity: The 15° contact angle is engineered to handle combined loads effectively, providing a balanced performance for both radial and axial forces.
- Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be supplied in matched sets of 4, allowing for precise preload and rigidity control in complex mounting arrangements.
- Wide Operating Range: The specified temperature range of -30°C to 110°C ensures reliable performance in diverse operating environments.
71806 CDGA/HCP4 Bearing Typical Application Areas
This high-precision angular contact bearing is specifically designed for demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and drilling spindles requiring utmost precision and rigidity.
- Precision Instrumentation: High-speed rotors in measuring devices and analytical equipment.
- Semiconductor Manufacturing Equipment: Robotic arms, wafer handling systems, and other critical motion components.
- High-Frequency Motors and Spindles: Applications where minimal friction, heat generation, and high rotational speeds are paramount.
