71830 ACD/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71830 ACD/P4
Basic Information
System of measurement
Metric
Weight
1.1 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
150 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
190 mm
Outside diameter tolerance
-0.011mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
35
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
10980 lbf
Radial static load rating
15300 lbf
Limiting speed
8.5 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:
$ 2405.86
/ each
In Stock
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Product Overview and Core Advantages
The 71830 ACD/P4 is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Operating under P4 (ABEC-7) tolerance class, this bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, making it ideal for machine tool spindles and other precision machinery. Its phenolic cage and optimized internal geometry contribute to superior high-speed performance, while its preloaded configuration ensures minimal axial play and maximum system stiffness.
71830 ACD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71830 | Basic bearing designation indicating a metric, single-row angular contact bearing with a 150mm bore and 190mm outside diameter. |
| AC | Angular Contact design with a 25° contact angle, optimized for high thrust load capacity. |
| D | Indicates a high thrust capacity internal design. |
| /P4 | Specifies the P4 tolerance class (ABEC-7), denoting extremely tight dimensional and running accuracy for high-precision applications. |
Structural Features and Performance Benefits
- High Rigidity and Precision: Manufactured to P4 precision class with a 25° contact angle, this bearing provides exceptional system stiffness and running accuracy, critical for applications with minimal deflection requirements.
- Superior Load Capacity: The optimized internal geometry and high thrust capacity design (D) enable it to handle significant combined radial and axial loads simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures stability and low friction at high rotational speeds, supporting a limiting speed of 8,500 rpm.
- Durability and Reliability: Constructed from chrome steel for both rings and balls, the bearing offers high wear resistance and long service life under demanding conditions.
71830 ACD/P4 Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes
- Medical and Laboratory Equipment
- Robotic Arms and Precision Actuators
