71814 ACD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71814 ACD/P4DGA
Basic Information
System of measurement
Metric
Weight
0.27 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
20 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
4770 lbf
Radial static load rating
6750 lbf
Limiting speed
28 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
Price:
$ 368.49
/ each
In Stock
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71814 ACD/P4DGA Bearing Product Overview & Core Advantages
The 71814 ACD/P4DGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-lubricated and matched pair, it is engineered to accommodate combined loads (radial and axial) simultaneously. Its P4 tolerance class and extra light preload (Class A) ensure smooth, quiet operation with minimal vibration, making it ideal for high-reliability, high-rigidity spindles and precision machinery.
71814 ACD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71814 | Basic bearing designation (70mm bore, 90mm OD, 20mm width) |
| AC | Angular Contact design with a 25° contact angle |
| D | High internal design and manufacturing specifications |
| /P4 | P4 tolerance class, indicating very high dimensional and running accuracy |
| DGA | Universal matchable (SU) bearing supplied as a pre-loaded duplex set |
71814 ACD/P4DGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and duplex arrangement (SU) provide high rigidity, enabling the bearing to handle significant combined radial and axial loads.
- Super-Precision Performance: Manufactured to P4 tolerance class with an extra light preload, this bearing guarantees minimal runout and exceptional rotational accuracy for precision applications.
- Optimized High-Speed Operation: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 28,000 rpm, reducing centrifugal forces and heat generation.
- Superior Material & Construction: Made from chrome steel for both rings and balls, the bearing offers high durability and wear resistance. The open seal type allows for optimal lubrication flow in controlled environments.
71814 ACD/P4DGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications requiring precision and speed, such as:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-Frequency Machining Centers
- Industrial High-Speed Motors
- Aerospace & Defense Instrumentation
