7220 ACD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7220 ACD/P4ADGB
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
25 °
Ball & Washer Dimensions
Ball diameter
25.4 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
54450 lbf
Radial static load rating
58500 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
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
In Stock
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7220 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 7220 ACD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high rigidity. Engineered to a P4A tolerance class, it is optimized to accommodate combined loads (radial and axial) simultaneously. Its universal matchable (SU) design allows for flexible mounting in pairs to handle bidirectional axial loads, making it an ideal, compact solution for high-speed, high-reliability machinery where precision is paramount.
7220 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| 7220 | Basic Series & Size | Denotes a metric series bearing with a 100 mm bore, 180 mm OD, and 68 mm width. |
| AC | Angular Contact | The bearing is designed with a 25° contact angle for optimal axial load capacity. |
| D | High Contact Angle | Specifically indicates a larger contact angle, enhancing axial load carrying capability. |
| P4A | Tolerance Class | Signifies high precision with very tight dimensional and running accuracy tolerances. |
| DB | Matched Set Arrangement | Indicates the bearing is supplied as a universally matchable (SU) pair in a back-to-back (DB) configuration. |
7220 ACD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design, combined with the universal matchable pairing, creates a highly rigid bearing system capable of supporting significant combined radial and axial loads from both directions.
- Precision & High-Speed Performance: Manufactured to P4A tolerance standards, this bearing ensures minimal vibration and precise running. The phenolic cage and optimized internal geometry contribute to stable operation at high speeds, with a limiting speed of 16,000 rpm.
- Optimized Internal Geometry: Featuring 15 high-grade chrome steel balls with a diameter of 25.4 mm, the bearing is engineered for durability and efficient load distribution.
- Pre-lubricated & Open Design: The bearing comes pre-lubricated for immediate operation and features an open design, making it suitable for centralized lubrication systems in demanding environments.
7220 ACD/P4ADGB Bearing Typical Application Areas
The 7220 ACD/P4ADGB is engineered for high-performance applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Gearboxes: In industrial robotics and aerospace actuation systems.
- High-Frequency Motors and Spindles: Where high rotational speeds and accuracy are critical.
- Medical and Laboratory Equipment: Such as centrifuges and precision scanners.
