7220 ACD/P4ADGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7220 ACD/P4ADGA
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
Extra light / Class A
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:
$ 860.11
/ each
In Stock
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7220 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 7220 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Operating as a universal matchable (SU) bearing, it can be paired with another identical bearing to form a preloaded duplex set, delivering superior stiffness and runout control. Its P4A tolerance class ensures ultra-precision operation, making it ideal for high-speed spindles and other high-performance machinery. The bearing is pre-lubricated for immediate use and features a 25° contact angle, optimized to handle significant combined loads—both radial and axial—simultaneously.
7220 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7220 ACD/P4ADGA provides detailed technical specifications through its suffixes:
- 7220: Basic series number (100mm bore, 180mm OD).
- AC: Angular Contact design with a 25° contact angle.
- D: Indicates a duplex (universal matchable) configuration.
- P4A: Denotes an ultra-precision tolerance class (exceeding ABEC 7).
- DGA: Specifies a Universal Matchable (SU) arrangement with Extra Light (A) preload.
7220 ACD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The duplex universal match (SU) design, combined with P4A dimensional and running accuracy, provides exceptional system stiffness and minimizes deflection under load.
- Superior Load Capacity: The 25° contact angle and robust construction enable the bearing to support high combined radial and axial loads effectively.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 16,000 rpm. The open design facilitates efficient lubrication management.
- Pre-Lubricated & Ready for Use: Factory-applied lubrication ensures immediate operation and protects the bearing during the initial run-in period within its specified temperature range.
7220 ACD/P4ADGA Bearing Typical Application Areas
This precision angular contact bearing is engineered for high-demand applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Gearboxes: Where low runout and high stiffness are critical for power transmission.
- High-Frequency Motors and Spindles: In applications pushing the limits of rotational speed.
- Industrial Pumps and Compressors: For handling significant combined loads in demanding fluid-handling systems.
