7024 ACD/P4ADFA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7024 ACD/P4ADFA
Basic Information
System of measurement
Metric
Weight
4.26 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
180 mm
Outside diameter tolerance
-0.004mm to 0
Width
56 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
19.05 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
40050 lbf
Radial static load rating
52200 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Face-to-Face (DF)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7024 ACD/P4ADFA Bearing Product Overview & Core Advantages
The 7024 ACD/P4ADFA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and high system rigidity. This P4A tolerance class bearing is supplied as a matched set in a Face-to-Face (DF) arrangement, preloaded to Extra Light (Class A) specifications. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously with high precision, making it ideal for high-speed spindles and other demanding machinery where high rigidity and minimal runout are critical.
7024 ACD/P4ADFA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact, Duplex arrangement (Face-to-Face/DF). This indicates a preloaded pair of bearings. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards, ensuring extremely tight dimensional and running accuracy. |
| DF | Face-to-Face mounting. This arrangement provides high moment rigidity and is less sensitive to misalignment. |
| A | Specifies the Extra Light preload level, optimized for high-speed operation with minimal friction and heat generation. |
7024 ACD/P4ADFA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex face-to-face (DF) arrangement and 25° contact angle create a highly rigid bearing system capable of supporting significant combined radial and axial loads from both directions. This configuration is essential for applications requiring precise shaft positioning under load.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with extremely tight bore, OD, and width tolerances, this bearing ensures minimal vibration and runout. The phenolic resin cage and optimized internal geometry contribute to stable operation at high rotational speeds, with a limiting speed of 16,000 rpm.
- Optimized Material Selection: Constructed from chrome steel for both rings and balls, the bearing offers high durability and fatigue resistance. The phenolic cage provides excellent strength-to-weight ratio and operates smoothly with minimal friction.
- Ready-to-Install Matched Set: Supplied as a factory-lubricated, preloaded pair, the bearings are matched for optimal performance, eliminating the need for on-site adjustment and ensuring consistent, high-precision operation from installation.
7024 ACD/P4ADFA Bearing Typical Application Areas
This precision angular contact bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications demanding extreme accuracy and smooth operation.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Industrial Pumps & Compressors: For shafts requiring precise axial location and high rigidity.
