71814 ACDGC/HCP4
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71814 ACDGC/HCP4
Basic Information
System of measurement
Metric
Weight
0.12 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
31
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2925 lbf
Radial static load rating
3375 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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71814 ACDGC/HCP4 Bearing Product Overview & Core Advantages
The 71814 ACDGC/HCP4 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This single bearing features a 25° contact angle and is manufactured to P4 tolerance class, ensuring ultra-precise rotational characteristics. Its core advantages include the ability to handle combined loads (simultaneous radial and axial loads), excellent high-speed capabilities with a limiting speed of 28,000 rpm, and superior rigidity due to its optimized internal geometry. The use of ceramic balls and a phenolic cage further enhances its performance in high-velocity and thermally challenging environments.
71814 ACDGC/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | High-Precision, Double-Row bearing configuration. |
| GC | Specific internal clearance and preload group for Moderate Preload (Class C). |
| HC | Hybrid Ceramic construction, indicating ceramic balls. |
| P4 | Indicates the bearing is manufactured to a high precision tolerance class. |
71814 ACDGC/HCP4 Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and double-row configuration provide superior stiffness, enabling the bearing to effectively support combined radial and axial loads.
- Superior High-Speed Performance: The combination of lightweight ceramic balls, which reduce centrifugal forces, and a phenolic resin cage allows for a very high limiting speed of 28,000 rpm.
- Precision and Accuracy: Manufactured to P4 tolerance class with tight dimensional controls on the bore diameter, outside diameter, and width, ensuring minimal runout and vibration for precise applications.
- Universal Matching (SU): This bearing is "Universal Matchable," meaning multiple bearings (up to 4 in a set) can be mounted together in various arrangements (back-to-back, face-to-face, or tandem) to achieve specific preload and stiffness requirements without selective assembly.
- Thermal Stability: The phenolic cage and ceramic balls offer better performance across the specified temperature range (-30°C to 110°C) compared to all-steel alternatives.
71814 ACDGC/HCP4 Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for applications where speed, accuracy, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy actuators.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and flight control mechanisms.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
