7009 ACD/P4ATGB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7009 ACD/P4ATGB
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
Universal Matchable (SU)
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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7009 ACD/P4ATGB Bearing Product Overview & Core Advantages
The 7009 ACD/P4ATGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to accommodate combined radial and axial loads simultaneously, this bearing features a 25° contact angle and a Universal Matchable (SU) design, allowing for flexible mounting arrangements in sets. Its P4A tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and precision machinery where high rigidity and minimal runout are critical.
7009 ACD/P4ATGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing series designation, indicating a 45mm bore, 75mm OD, and 48mm width. |
| ACD | Contact angle of 25° and optimized internal geometry for high performance. |
| P4A | Indicates a high-precision tolerance class with very tight dimensional and running accuracy limits. |
| TGB | Refers to the phenolic resin cage material, offering excellent strength-to-weight ratio and suitability for high-speed operation. |
7009 ACD/P4ATGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and robust construction enable the bearing to handle significant combined loads. With a dynamic load rating of 13,320 lbf and static load rating of 14,400 lbf, it provides reliable support in strenuous conditions.
- Precision & High-Speed Performance: Manufactured to P4A tolerance standards and featuring a lightweight phenolic cage (TGB), this bearing achieves a high limiting speed of 41,000 rpm. The precise ball guidance minimizes friction and heat generation.
- Universal Matching Capability (SU): As a Universal Matchable bearing, it can be mounted in various preload configurations (back-to-back, face-to-face, or tandem) with other identical bearings, providing design flexibility for achieving optimal system stiffness and accuracy.
- Optimized Internal Geometry: With a 25° contact angle, 17 high-grade chrome steel balls, and a carefully calculated ball diameter of 9.525 mm, the internal design is optimized for smooth operation and long service life.
7009 ACD/P4ATGB Bearing Typical Application Areas
This precision bearing is ideally suited for applications where high speed, accuracy, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary units requiring high positional accuracy.
- High-Frequency Motors and Spindles: Applications demanding minimal vibration and runout.
- Medical Equipment: Dental handpieces and imaging device rotors.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
