71919 ACD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71919 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.58 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.009mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
10395 lbf
Radial static load rating
11700 lbf
Limiting speed
13 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
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:
$ 1200.14
/ each
In Stock
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71919 ACD/P4A Bearing Product Overview & Core Advantages
The 71919 ACD/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, it is optimized to handle significant combined loads, particularly thrust loads in one direction, making it ideal for high-speed spindles and precision machinery. Its compact design, featuring a 25° contact angle and phenolic cage, ensures reliable performance under demanding operational conditions.
71919 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle and that the bearing is designed for universal mounting (can be paired in various arrangements). |
| P4A | Specifies the tolerance class P4 (ABEC-7), denoting very high running accuracy and dimensional precision. |
71919 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design with a 25° contact angle provides excellent rigidity and is manufactured to P4 precision for minimal runout and vibration, critical for high-speed applications.
- Superior Load Capacity: Engineered to support combined radial and axial loads simultaneously. With a dynamic load rating of 10395 lbf and a static load rating of 11700 lbf, it offers reliable performance under heavy-duty conditions.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 13,000 rpm. The open design facilitates efficient lubrication and cooling.
- Durability and Reliability: Constructed from chrome steel for both rings and balls, ensuring high wear resistance and long service life. The bearing is pre-lubricated for immediate use.
71919 ACD/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision and speed are paramount. Key applications include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
