7220 CD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7220 CD/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
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
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 CD/P4ADGB Bearing Product Overview & Core Advantages
The 7220 CD/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 offers superior dimensional and running accuracy. Its universal matchable (SU) design allows for flexible mounting in preloaded duplex arrangements, enabling it to handle combined radial and axial loads simultaneously. With a light preload (Class B) and a 15° contact angle, this bearing is optimized for high-speed operation and high-precision performance in demanding industrial environments.
Model Code Breakdown
| Suffix | Technical Meaning |
|---|---|
| CD | A 15° contact angle and high-precision construction. |
| P4A | Indicates a super-precision tolerance class with enhanced running accuracy requirements. |
| DGB | Signifies a Universal Matchable (SU) bearing, designed to be paired in a back-to-back (DB) or face-to-face (DF) arrangement without the need for selective mounting. |
7220 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and duplex mounting capability provide high system rigidity, enabling the bearing to effectively support combined loads and moment loads.
- High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower friction and stable operation at the high limiting speed of 16,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, ensuring minimal runout and precise shaft positioning.
- Material Quality: Components made from high-grade chrome steel provide excellent durability, fatigue resistance, and long service life under demanding operating conditions.
7220 CD/P4ADGB Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace and Defense Systems
