7009 ACD/P4ADT
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7009 ACD/P4ADT
Basic Information
System of measurement
Metric
Weight
0.47 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
75 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
9945 lbf
Radial static load rating
9675 lbf
Limiting speed
41 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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7009 ACD/P4ADT Bearing Product Overview & Core Advantages
The 7009 ACD/P4ADT is a precision angular contact ball bearing supplied as a matched duplex tandem (DT) pair to P4A tolerance class. This configuration is engineered to deliver exceptional high rigidity and axial load capacity in a single, pre-assembled unit. Its primary advantage lies in its ability to accommodate combined loads efficiently, making it an ideal solution for applications demanding high precision, high speed, and superior rotational accuracy. The bearing is pre-lubricated and features an open design for controlled lubrication management.
7009 ACD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing series and size designation (45mm bore, 75mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex Tandem (DT) arrangement. Two bearings are mounted in tandem to increase axial load capacity in one direction. |
| P4A | Indicates a high-precision tolerance class, with enhanced running accuracy for spindle applications. |
7009 ACD/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement combines two bearings, significantly increasing the axial load-carrying capacity and system rigidity compared to a single bearing. This makes it suitable for heavy combined loads.
- Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and superior rotational accuracy, which is critical for high-speed and high-precision machinery.
- High-Speed Capability: The lightweight phenolic cage and optimized internal geometry contribute to lower centrifugal forces, enabling a high limiting speed of 41,000 rpm.
- Optimized Material & Design: Constructed from chrome steel for both rings and balls, ensuring high durability and fatigue life. The 25° contact angle provides an excellent balance between radial and axial load capacity.
7009 ACD/P4ADT Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
