71814 ACDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71814 ACDGA/P4
Basic Information
System of measurement
Metric
Weight
0.13 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
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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71814 ACDGA/P4 Bearing Product Overview & Core Advantages
The 71814 ACDGA/P4 is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single bearing with a 25° contact angle and Extra Light (A) preload, it is engineered to handle high-speed operations while supporting significant combined loads (radial and axial). Manufactured to P4 tolerance class, it guarantees minimal runout and superior performance in high-precision machinery. Its compact cross-section and universal matchability make it an ideal choice for preloaded arrangements in spindles and other critical applications.
71814 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | High Ball Complement, increasing load capacity. |
| GA | Specific internal clearance and preload group (Extra Light / Class A). |
| /P4 | Precision tolerance class superior to ABEC 7, ensuring extremely tight dimensional and running accuracy. |
71814 ACDGA/P4 Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and high ball complement (31 balls) are optimized to support substantial combined radial and axial loads. The Extra Light preload eliminates internal clearance, providing maximum system stiffness and precise shaft positioning.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry contributes to a high limiting speed of 28,000 rpm, making it an excellent high-speed bearing.
- Exceptional Precision: Manufactured to P4 tolerance class with extremely tight bore, outside diameter, and width tolerances, this bearing ensures minimal vibration and runout for ultra-precise applications.
- Universal Matchability (SU): This bearing is universally matchable, allowing multiple bearings to be mounted in tandem or back-to-back arrangements without selective assembly, simplifying installation and ensuring optimal preload.
71814 ACDGA/P4 Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Spindles: In PCB drilling, dental handpieces, and other small, high-speed tools.
- High-Frequency Motors: Where low vibration and high rotational accuracy are critical.
- Robotics: In articulated arm joints and precision gearboxes.
