7224 ACD/P4ADT
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7224 ACD/P4ADT
Basic Information
System of measurement
Metric
Weight
10.8 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
215 mm
Outside diameter tolerance
-0.004mm to 0
Width
80 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
30.162 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
69075 lbf
Radial static load rating
82125 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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7224 ACD/P4ADT Bearing Product Overview & Core Advantages
The 7224 ACD/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex tandem (DT) arrangement consists of two matched bearings, preloaded to deliver superior high rigidity and handle significant combined loads. Manufactured to P4A tolerance class, it is engineered for high-speed operation and is supplied pre-lubricated for immediate use, making it an ideal solution for high-performance spindles and precision machinery.
7224 ACD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7224 | Basic bearing series and size designation (Bore: 120 mm, OD: 215 mm, Width: 80 mm) |
| AC | Angular Contact design with a 25° contact angle |
| D | Duplex Tandem (DT) matched arrangement |
| P4A | High precision tolerance class (superior to ABEC 7) |
7224 ACD/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Axial Load Capacity: The duplex tandem configuration with preload provides exceptional system stiffness, enabling precise positioning and excellent resistance to combined loads, particularly in the axial direction.
- Precision High-Speed Performance: The P4A tolerance class ensures minimal runout and vibration. Combined with the lightweight phenolic cage and optimized internal geometry, it supports a high limiting speed of 10,000 rpm.
- Superior Material & Construction: Manufactured from chrome steel for both rings and balls, the bearing offers high fatigue life and durability. The precise ball diameter and quantity are optimized for load distribution.
- Ready-to-Install: The bearing is pre-lubricated, simplifying installation and ensuring immediate, reliable operation within its specified temperature range.
7224 ACD/P4ADT Bearing Typical Application Areas
This bearing is specifically designed for high-precision, high-speed applications, including:
- Machine Tool Spindles: For CNC machining centers, grinders, and milling machines requiring high rigidity and running accuracy.
- High-Frequency Spindles: In PCB drilling and precision engraving equipment.
- Precision Rotary Tables: For indexing and positioning in automated manufacturing systems.
- High-Speed Pumps and Compressors: Where reliable performance under significant axial loads is critical.
