7022 ACD/P4ALDT
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7022 ACD/P4ALDT
Basic Information
System of measurement
Metric
Weight
3.95 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
170 mm
Outside diameter tolerance
-0.004mm to 0
Width
56 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
19.05 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
37800 lbf
Radial static load rating
46800 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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
Price available upon request.
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7022 ACD/P4ALDT Bearing Product Overview & Core Advantages
The 7022 ACD/P4ALDT is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex tandem (DT) arrangement bearing set is preloaded and manufactured to P4A tolerance class, ensuring superior running accuracy and minimal vibration. Its primary advantage lies in its ability to handle high combined loads (radial and axial) in one direction with maximum stiffness, making it ideal for high-precision, high-speed spindles. The phenolic cage and optimized 25° contact angle contribute to its outstanding high-speed performance and thermal stability.
7022 ACD/P4ALDT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7022 | Basic bearing series, indicating a 110 mm bore, 170 mm OD, and 56 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates a Duplex (two-bearing) set. |
| P4A | High Precision Tolerance Class, exceeding ABEC-7/ISO P4 standards for exceptional dimensional and running accuracy. |
| L | Bearing is Lubricated from the factory. |
| DT | Duplex Tandem arrangement. The two bearings are mounted in tandem to increase axial load capacity in one direction. |
7022 ACD/P4ALDT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and preload create an exceptionally rigid bearing system capable of withstanding high radial loads and significant unidirectional axial loads. This configuration minimizes deflection under load, which is critical for maintaining precision.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the 25° contact angle provides an excellent balance between axial load capacity and speed capability, supporting a limiting speed of 10,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight bore, outer diameter, and width tolerances, this bearing ensures smooth, quiet operation with high rotational accuracy, essential for applications requiring minimal runout.
- Durable Construction: Made from high-grade chrome steel for both rings and balls, the bearing offers high fatigue life and reliability under demanding operating conditions.
7022 ACD/P4ALDT Bearing Typical Application Areas
This precision bearing set is specifically engineered for high-performance machinery where accuracy, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines, precision grinding equipment.
- High-Frequency Motors: Spindles for electric motors requiring high rotational accuracy.
- Industrial Pumps and Compressors: Applications demanding high axial stiffness and speed.
