7224 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7224 ACDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
4.41 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
40 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
42750 lbf
Radial static load rating
41175 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7224 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 7224 ACDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to accommodate combined loads (simultaneous radial and axial loads), its 25° contact angle provides superior axial load capacity. Manufactured to P4A tolerance class, it offers extremely tight dimensional and running accuracy. The combination of a phenolic cage and ceramic balls enables outstanding high-speed performance, with a limiting speed of 10,000 rpm. This bearing is universally matchable (SU), allowing for flexible mounting in preloaded sets to achieve maximum system rigidity and rotational precision.
7224 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7224 | Standard bore diameter (120 mm) and dimension series. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Optimized internal geometry for high-precision applications. |
| GA | Specifies a universally matchable (SU) bearing, allowing any combination to achieve a specific preload. |
| HCP4A | Denotes the tolerance class P4A, indicating very high dimensional and running accuracy, exceeding ABEC 7 standards. |
7224 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and robust construction enable the bearing to handle significant combined loads. The 25° contact angle is optimized for substantial axial loads while maintaining excellent radial load capacity (Dynamic: 42,750 lbf, Static: 41,175 lbf).
- Superior High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic (Si3N4) balls drastically reduce centrifugal forces, allowing for a high limiting speed of 10,000 rpm. This combination also reduces friction and heat generation.
- Enhanced Durability and Precision: Ceramic balls offer superior wear resistance, lower thermal expansion, and electrical insulation compared to steel. Manufactured to P4A tolerance with tight bore, OD, and width tolerances, this bearing ensures minimal runout and vibration for ultra-precise applications.
- Universal Matching Capability (SU): As a universally matchable bearing, individual 7224 ACDGA/HCP4A units can be assembled in any combination (face-to-face, back-to-back) to form a preloaded set, simplifying inventory and achieving optimal system stiffness.
7224 ACDGA/HCP4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance machinery where speed, accuracy, and rigidity are critical.
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for electric vehicles and industrial automation.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and navigation instruments.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
