7009 ACD/P4ATBTB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7009 ACD/P4ATBTB
Basic Information
System of measurement
Metric
Weight
0.71 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
48 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
13320 lbf
Radial static load rating
14400 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
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7009 ACD/P4ATBTB Bearing Product Overview & Core Advantages
The 7009 ACD/P4ATBTB is a high-precision angular contact ball bearing supplied as a matched triplex set in a back-to-back (TBT) arrangement. This configuration is engineered to provide exceptional system rigidity and superior capacity for handling combined radial and axial loads from both directions. Manufactured to the stringent P4A tolerance class, it delivers the running accuracy and dimensional stability required for the most demanding high-speed and high-precision applications. The phenolic cage and light preload (Class B) further enhance its high-speed performance and operational smoothness.
7009 ACD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Standard bore diameter (45 mm) and dimension series. |
| ACD | Angular Contact design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class exceeding ABEC 7/ISO P4, ensuring minimal runout and precise dimensions. |
| TBT | Denotes a Triplex Back-to-Back matched set of three bearings. This arrangement provides high moment stiffness. |
7009 ACD/P4ATBTB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The triplex back-to-back arrangement creates a very rigid bearing system capable of supporting heavy combined loads and resisting overturning moments, making it ideal for applications requiring high shaft positioning accuracy.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the 25° contact angle provides an excellent balance between radial and axial load capacity, contributing to a high limiting speed of 41,000 rpm.
- Precision Engineering: Conformance to the P4A tolerance class guarantees superior running accuracy, low noise, and low vibration levels, which is critical for the longevity and performance of the entire spindle or drive system.
- Superior Material: Constructed from high-grade chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational lifespan under demanding conditions.
7009 ACD/P4ATBTB Bearing Typical Application Areas
This precision bearing set is specifically designed for high-performance machinery where extreme accuracy, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Applications in PCB drilling and high-frequency motors.
- High-Speed Robotic Drives: Used in robotic arms and joints requiring precise motion control.
- Advanced Pumps and Compressors: Where reliable operation under combined loads is essential.
