7222 ACDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7222 ACDGC/P4A
Basic Information
System of measurement
Metric
Weight
4.63 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
200 mm
Outside diameter tolerance
-0.004mm to 0
Width
38 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
26.988 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
37800 lbf
Radial static load rating
36000 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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7222 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7222 ACDGC/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. Engineered to accommodate combined loads (simultaneous radial and axial loads), this single bearing features a 25° contact angle and is supplied pre-lubricated and universally matchable. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-speed spindles and other precision machinery where high rigidity and minimal runout are critical.
7222 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7222 | Basic bearing series, indicating a metric 110mm bore, 200mm OD, and 38mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Moderate preload designation (Class C). |
| GC | Specific internal clearance and preload grouping. |
| /P4A | Indicates a high-precision tolerance class with enhanced dimensional and running accuracy. |
7222 ACDGC/P4A Bearing Structural Features & Performance Benefits
- Optimized Internal Geometry & High Rigidity: The 25° contact angle and precision-ground raceways are engineered to provide high resistance to deflection under combined loads, ensuring stable performance in precision applications.
- Superior High-Speed Capability: The lightweight, durable phenolic cage minimizes centrifugal forces and friction, enabling a high limiting speed of 16,000 rpm. This makes it an excellent high-speed bearing for spindle applications.
- Precision & Universal Matching: Manufactured to P4A tolerance standards, this bearing guarantees extremely tight dimensional control. It is Universal Matchable (SU), allowing for simplified mounting in preloaded sets (back-to-back or face-to-face) without selective assembly to achieve the desired rigidity.
- Robust Load Capacity: With a dynamic load rating of 37,800 lbf and a static load rating of 36,000 lbf, the bearing is built to handle significant combined loads over a long service life.
- Pre-Lubricated & Open Design: The bearing comes pre-lubricated for immediate operation and features an open seal type, making it suitable for systems with centralized lubrication for optimal heat dissipation and contamination flushing.
7222 ACDGC/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Applications requiring high positional accuracy and rigidity.
- High-Frequency Motors and Spindles: Where minimal vibration and high rotational accuracy are paramount.
- Industrial Pumps and Compressors: For shafts subjected to significant axial and radial forces.
