7222 ACDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7222 ACDGB/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
16.25 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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:
$ 464.45
/ each
In Stock
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7222 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7222 ACDGB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This single bearing features a 25° contact angle and is supplied as part of a universally matchable (SU) set, allowing for precise preload configuration when paired with a second, identical bearing. Its core advantages include the ability to accommodate combined radial and axial loads simultaneously, superior running accuracy due to its P4A tolerance class, and optimized performance for high-speed operation, making it an ideal choice for high-reliability machinery.
7222 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7222 | Basic bearing designation indicating a metric series bearing with a 110 mm bore, 200 mm OD, and 38 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Indicates a Universal Matchable (SU) bearing set. Two bearings can be mounted in a "back-to-back" (DB), "face-to-face" (DF), or tandem (DT) arrangement to achieve the required rigidity and load capacity. |
| P4A | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances, superior to standard ABEC-7 (P4) levels. |
7222 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust construction are engineered to support significant combined loads. When used in a matched set (DB/DF arrangement), the bearing system provides exceptionally high rigidity to minimize shaft deflection under complex loading conditions.
- Precision & High-Speed Performance: The phenolic resin cage offers excellent dimensional stability and low friction, contributing to smooth operation and a high limiting speed of 16,250 rpm. The P4A super-precision tolerances ensure minimal vibration and heat generation at high rotational speeds.
- Optimized Internal Geometry: Precision-ground chrome steel rings and balls, along with a controlled ball quantity and ball diameter, ensure consistent performance, long service life, and reliable operation in precision spindles.
- Universal Matching Design: The Universal Matchable (SU) feature allows for flexible mounting configurations, enabling engineers to achieve the exact preload (Light / Class B in this case) and system stiffness required for the application without selective assembly.
7222 ACDGB/P4A Bearing Typical Application Areas
This bearing is specifically engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Applications in PCB drilling, semiconductor manufacturing, and other high-accuracy machining processes.
- High-Speed Robotic Drives: Joints and actuators requiring precise motion control.
- Industrial Pumps & Compressors: For applications demanding high rotational accuracy and reliability.
