7220 ACD/P4ATGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7220 ACD/P4ATGA
Basic Information
System of measurement
Metric
Weight
9.73 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
102 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
71775 lbf
Radial static load rating
87750 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
3
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
In Stock
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7220 ACD/P4ATGA Bearing Product Overview & Core Advantages
The 7220 ACD/P4ATGA is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4A tolerance class, this bearing excels in handling combined loads, supporting significant radial loads alongside thrust loads in one direction. Its extra light preload (Class A) ensures smooth, precise operation with minimal runout, making it ideal for high-speed spindles and other high-rigidity applications. The universal matchable (SU) design allows for flexible mounting arrangements in sets, providing superior system stability.
7220 ACD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7220 ACD/P4ATGA breaks down into the following technical specifications:
- 7220: Basic series designation (100mm bore, 180mm OD).
- A: Denotes a 25° contact angle, optimized for high axial load capacity.
- CD: Indicates a Universal Matchable (SU) bearing. When mounted in a specific arrangement (face-to-face or back-to-back), they provide a preload effect.
- P4A: Specifies the tolerance class, indicating very high running accuracy and dimensional precision.
- TGA: This suffix is not a standard public designation for this specific configuration in the provided data. Based on the specification, this bearing is lubricated and features an open seal type with a phenolic cage.
7220 ACD/P4ATGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with an extra light preload, this bearing delivers exceptional running accuracy and minimizes deflection under load, which is critical for high-speed and high-precision machinery.
- Superior Load Capacity: The 25° contact angle and robust construction using chrome steel for rings and balls enable it to carry high radial dynamic load ratings of 71,775 lbf and radial static load ratings of 87,750 lbf, effectively managing combined loads.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 16,000 rpm. This makes it suitable for demanding high-speed applications.
- Flexible System Integration: As a Universal Matchable (SU) bearing, it can be paired with other identical bearings in sets (commonly 2 or 3) to create a preloaded system that enhances overall stiffness and performance.
7220 ACD/P4ATGA Bearing Typical Application Areas
This precision bearing is engineered for use in high-performance equipment, including:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Rotary Axes
