71900 ACE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71900 ACE/P4A
Basic Information
System of measurement
Metric
Weight
0.009 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
22 mm
Outside diameter tolerance
-0.005mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
11
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
439 lbf
Radial static load rating
169 lbf
Limiting speed
140 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:
$ 100.18
/ each
In Stock
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71900 ACE/P4A Bearing Product Overview & Core Advantages
The 71900 ACE/P4A is a single-row angular contact ball bearing designed for applications demanding exceptional precision and high-speed performance. Engineered to a P4 (ABEC-7) tolerance class, this bearing is optimized to handle significant axial loads in one direction while supporting combined radial and axial loads. Its compact design, with a 10 mm bore and 6 mm width, makes it ideal for high-precision, space-constrained assemblies. The bearing is pre-lubricated and features a lightweight phenolic cage, contributing to its high limiting speed of 140,000 rpm and reliable operation.
71900 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71900 | Basic bearing series, indicating a 10mm bore, 22mm OD, and 6mm width. |
| ACE | Internal design code specifying a 25° contact angle and optimized internal geometry for high-speed and high-load capacity. |
| P4A | Indicates a P4 (ABEC-7) tolerance class with specific running accuracy requirements, ensuring high precision and smooth operation. |
71900 ACE/P4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a lightweight phenolic cage, a 25° contact angle, and precision-ground chrome steel components enables a very high limiting speed of 140,000 rpm, making it an excellent high-speed bearing.
- Axial Load Capacity: The angular contact design is specifically engineered to carry heavy axial loads in one direction, a critical feature for spindles and other high-thrust applications.
- Precision & Rigidity: Manufactured to P4 (ABEC-7) standards, this bearing provides superior dimensional stability and running accuracy, which is essential for applications requiring minimal runout and high system rigidity.
- Preload & Matched Sets: The bearing is supplied with a preload, enhancing system stiffness and rotational accuracy. While this is a single bearing, it can be mounted in pairs (back-to-back or face-to-face) to handle combined loads and moments.
71900 ACE/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Motors and Spindles
- Precision Instrumentation
- Robotic Drives and Rotary Tables
- Dental and Medical Handpieces
