7020 ACD/PA9ADT
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7020 ACD/PA9ADT
Basic Information
System of measurement
Metric
Weight
2.53 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
48 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
28575 lbf
Radial static load rating
36000 lbf
Limiting speed
16 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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7020 ACD/PA9ADT Bearing Product Overview & Core Advantages
The 7020 ACD/PA9ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. Engineered as a duplex tandem (DT) arrangement, this preloaded pair is optimized to handle significant combined loads, including high thrust loads in a single direction. Its PA9A tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and other high-precision machinery where minimal runout and vibration are critical.
7020 ACD/PA9ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| AC | Angular Contact design with a 25° contact angle. | Optimized for handling high axial loads in one direction. |
| D | Duplex Tandem (DT) preloaded pair. | Provides increased rigidity and axial load capacity; bearings are supplied ready-to-mount. |
| PA9A | High-Precision Tolerance Class. | Guarantees exceptional dimensional and running accuracy for smooth, quiet operation at high speeds. |
7020 ACD/PA9ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement with a factory-applied preload creates an exceptionally stiff bearing system. This configuration is specifically designed to withstand heavy combined radial and axial loads, making it far more robust than a single bearing.
- Optimized High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 16,000 rpm. The 25° contact angle provides an excellent balance between radial capacity and high thrust load capability.
- Precision Engineering: Manufactured to PA9A tolerance with tight dimensional controls on bore, outside diameter, and width. This results in precise shaft positioning, reduced vibration, and enhanced operational accuracy.
- Durable Construction: Components made from chrome steel offer high fatigue life and durability, suitable for the specified temperature range of -30°C to 110°C.
7020 ACD/PA9ADT Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring precision and rigidity.
- Precision Spindles: PCB drilling machines, high-frequency motor spindles.
- Pumps and Compressors: Applications with high axial loads and stringent accuracy requirements.
