7224 ACD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7224 ACD/P4A
Basic Information
System of measurement
Metric
Weight
5.42 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
215 mm
Outside diameter tolerance
-0.011mm to 0
Width
40 mm
Width tolerance
-0.24mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
30.162 mm
Ball quantity
15
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
42750 lbf
Radial static load rating
41175 lbf
Limiting speed
9 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:
$ 1688.23
/ each
In Stock
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7224 ACD/P4A Bearing Product Overview & Core Advantages
The 7224 ACD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 (ABEC-7) tolerance class, this bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, thanks to its defined 25° contact angle. Its phenolic resin cage and preload availability make it an ideal solution for machine tool spindles and other high-performance machinery where high speed and high rigidity are critical.
7224 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7224 | Standard bearing series designation, indicating a 120mm bore, 215mm OD, and 40mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a high load capacity internal geometry. |
| P4A | Denotes a P4 (ABEC-7) tolerance class with specific running accuracy requirements. |
7224 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design, combined with P4 precision and the option for preload, provides superior shaft positioning accuracy and system stiffness, effectively resisting deflection under heavy loads.
- Optimized Load Capacity: The 25° contact angle and high-capacity "D" design are optimized to handle significant combined radial and axial loads, with a dynamic load rating of 42,750 lbf and a static load rating of 41,175 lbf.
- Superior High-Speed Performance: The lightweight and robust phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 9,000 rpm. The open design allows for efficient lubrication management.
- Durability and Reliability: Manufactured from chrome steel for both rings and balls, this bearing offers excellent wear resistance and a long service life in demanding operating environments.
7224 ACD/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for applications requiring high speed, high rigidity, and precise rotational control. Key industries and equipment include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling heads.
- High-Frequency Motors and Spindles: Used in applications where rapid acceleration and deceleration are common.
- Precision Gearboxes and Pumps: Where accurate shaft alignment and minimal runout are essential.
- Aerospace and Defense Systems: In gyroscopes, radar equipment, and other high-reliability mechanisms.
