7220 CD/P4ADGC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7220 CD/P4ADGC
Basic Information
System of measurement
Metric
Weight
6.48 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
180 mm
Outside diameter tolerance
-0.004mm to 0
Width
68 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
25.4 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
57375 lbf
Radial static load rating
60750 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
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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7220 CD/P4ADGC Bearing Product Overview & Core Advantages
The 7220 CD/P4ADGC is a precision double row angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. Engineered to simultaneously handle combined radial and axial loads from both directions, this bearing eliminates the need for complex bearing arrangements. Its universal matchable (SU) design allows for flexible mounting in either back-to-back (DB) or face-to-face (DF) configurations without pre-load loss. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy, making it ideal for high-speed, high-precision machinery where reliability is paramount.
7220 CD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7220 | Basic bearing series and size designation (100mm bore, 180mm OD). |
| CD | Indicates a 15° contact angle and is designed for universal matching (SU). |
| P4A | Specifies the high-precision tolerance class, exceeding ABEC 7/ISO P4 standards for enhanced running accuracy. |
| DGC | Denotes a moderate preload (Class C) applied at the factory, ensuring optimal stiffness and immediate operational readiness. |
7220 CD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness, enabling the bearing to withstand significant combined loads. The optimized 15° contact angle efficiently manages bidirectional axial thrust.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures smooth operation, minimal vibration, and a high limiting speed of 16,000 rpm. The cage is lightweight and robust, ideal for demanding acceleration and deceleration cycles.
- Universal Matchability & Simplified Installation: The Universal Matchable (SU) feature allows any two bearings to be paired in DB or DF arrangements without selective matching, simplifying inventory management and assembly processes.
- Durable Construction: Components made from chrome steel offer high fatigue life and wear resistance. The factory-applied moderate preload (C) ensures consistent performance and eliminates the need for initial setup adjustments.
7220 CD/P4ADGC Bearing Typical Application Areas
- Machine Tool Spindles: For milling, grinding, and turning centers requiring high precision and rigidity.
- High-Frequency Motors & Spindles: In applications demanding high rotational speeds and accuracy.
- Precision Gearboxes: Where reliable support for combined loads is critical.
- Industrial Pumps & Compressors: For robust performance in demanding fluid handling systems.
- Medical & Laboratory Equipment: In devices where smooth, quiet, and precise motion is essential.
