7222 CDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7222 CDGB/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
15 °
Ball & Washer Dimensions
Ball diameter
26.988 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
40050 lbf
Radial static load rating
37350 lbf
Limiting speed
16 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
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7222 CDGB/P4A Bearing Product Overview & Core Advantages
The 7222 CDGB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable bearing with a 15° contact angle and light preload (Class B), it is engineered to accommodate combined loads—simultaneously handling significant radial and axial forces. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-speed spindles and precision machinery where reliability and performance are critical.
7222 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7222 | Basic bearing series, indicating a 110 mm bore, 200 mm OD, and 38 mm width. |
| CD | Contact angle designation of 15°. |
| GB | Indicates a universal matchable (SU) bearing designed for precise pairing in sets of two to achieve specific preload and rigidity. |
| P4A | The tolerance class, denoting very high precision for both dimensional and running accuracy, superior to ABEC-7 standards. |
7222 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and light preload provide excellent stiffness, enabling the bearing to support high combined loads with minimal deflection. The radial dynamic load rating of 40,050 lbf and static load rating of 37,350 lbf confirm its robust performance.
- Precision & Speed: Manufactured to P4A tolerance with a phenolic cage, this bearing achieves a high limiting speed of 16,000 rpm. The cage material contributes to lower friction and is suitable for high-speed operation.
- Material & Construction: Both rings and balls are made from chrome steel for high durability and wear resistance. The open seal type allows for custom lubrication schemes to optimize performance for specific operating conditions within the temperature range of -30°C to 110°C.
- Universal Matching: As a universal matchable (SU) bearing, it can be paired with another identical bearing in a back-to-back or face-to-face arrangement without selective mounting, simplifying installation and ensuring consistent preload.
7222 CDGB/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring utmost accuracy and rigidity.
- Precision Grinding Spindles: Applications where runout and thermal stability are critical.
- High-Frequency Motors and Spindles: Used in industries such as aerospace and automotive for manufacturing components.
- Robotic Drives and Precision Rotary Tables: Where high positional accuracy and dynamic response are necessary.
