7222 ACD/P4ADBA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7222 ACD/P4ADBA
Basic Information
System of measurement
Metric
Weight
9.26 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
200 mm
Outside diameter tolerance
-0.004mm to 0
Width
76 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
26.988 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
62100 lbf
Radial static load rating
70875 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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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7222 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7222 ACD/P4ADBA is a duplex back-to-back (DB) angular contact ball bearing designed for applications demanding extreme precision and high rigidity. This P4A tolerance class bearing is preloaded (Extra light / Class A) and manufactured as a matched set, enabling it to handle combined radial and axial loads simultaneously with exceptional accuracy. Its duplex back-to-back arrangement provides a wide effective spread, offering superior moment stiffness and operational stability, making it an ideal choice for high-precision spindles and other critical machinery.
7222 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7222 | Basic bearing series, indicating a 110 mm bore, 200 mm OD, and 76 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex (Two single bearings mounted as a set). |
| DB | Matched arrangement: Back-to-Back. |
| P4A | High Precision Tolerance Class, exceeding normal P4 standards, with very tight running accuracy. |
| A | Preload: Extra light (Class A). |
7222 ACD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Moment Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and provides exceptional operational stability.
- Superior Precision: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on the bore, outside diameter, and width, ensuring minimal runout and high rotational accuracy.
- Optimized for Combined Loads: The 25° contact angle is engineered to support significant combined radial and axial loads.
- High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 16,250 rpm. The bearing is supplied lubricated for immediate operation.
- Durable Construction: Components made from chrome steel provide high fatigue life and durability under demanding conditions.
7222 ACD/P4ADBA Bearing Typical Application Areas
This precision bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Aerospace and Defense Positioning Systems
