71824 ACD/P4
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71824 ACD/P4
Basic Information
System of measurement
Metric
Weight
0.55 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.009mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
8.731 mm
Ball quantity
35
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
7020 lbf
Radial static load rating
9562 lbf
Limiting speed
11 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:
$ 1694.26
/ each
In Stock
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71824 ACD/P4 Bearing Product Overview & Core Advantages
The 71824 ACD/P4 is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate primarily axial loads in one direction, this bearing features a 25° contact angle for optimal thrust capacity. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running accuracy, making it ideal for machine tool spindles and other precision machinery where minimal runout and vibration are critical. Its phenolic cage and pre-lubrication contribute to smooth operation at high speeds.
71824 ACD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71824 | Basic bearing designation indicating dimensions: 120mm bore, 150mm OD, 16mm width. |
| ACD | Angular Contact Design with a 25° contact angle and optimized internal geometry for high axial load capacity. |
| P4 | Indicates P4 tolerance class (equivalent to ABEC-7), ensuring extremely tight dimensional and running accuracy for precision applications. |
71824 ACD/P4 Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row angular contact design with a 25° contact angle provides high axial rigidity and precise rotational characteristics, essential for applications like machine tool spindles.
- Superior Load Capacity: Engineered to handle high axial loads in one direction and combined loads, with a dynamic load rating of 7020 lbf and static load rating of 9562 lbf.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling stable operation at a limiting speed of 11,000 rpm. Pre-lubrication ensures optimal performance at high rotational speeds.
- Precision Engineering: Manufactured to P4 tolerance class, this bearing guarantees minimal runout and vibration, contributing to the overall accuracy of the system.
- Material Quality: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and long service life.
71824 ACD/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring minimal deflection and high rotational accuracy.
- Precision Gearboxes: Applications demanding high axial rigidity and precise shaft positioning.
- High-Speed Motors & Spindles: Electric motors and high-frequency spindles where speed and accuracy are critical.
- Medical Equipment: High-speed centrifuges and precision medical devices.
- Aerospace Actuation Systems: Control surface actuators and other precision mechanisms.
