7209 ACD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7209 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.41 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.008mm to 0
Width
19 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
14
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
9225 lbf
Radial static load rating
6750 lbf
Limiting speed
24 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 306.51
/ each
In Stock
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7209 ACD/P4A Bearing Product Overview & Core Advantages
The 7209 ACD/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing with a 25° contact angle, it excels at supporting combined loads, effectively managing high radial forces and substantial thrust loads in one direction. Manufactured to P4 (ABEC-7) tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and other precision machinery. The availability of preload options further enhances system rigidity and positional accuracy.
7209 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7209 | Basic bearing series, indicating a metric angular contact ball bearing with a 45mm bore, 85mm OD, and 19mm width. |
| AC | Angular Contact design with a 25° contact angle for optimal thrust capacity. |
| D | Signifies a high ball complement and enhanced internal geometry for increased load-carrying capacity. |
| /P4A | Denotes a P4 (ABEC-7) precision tolerance class. The 'A' suffix indicates specific accuracy and performance characteristics suitable for preloaded arrangements. |
7209 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and optimized internal geometry, including a high ball complement (14 balls), provide superior resistance to deformation under load. This results in excellent stiffness and the ability to handle significant combined radial and axial loads.
- Precision & High-Speed Performance: Manufactured to P4 tolerance with a phenolic resin cage, this bearing ensures smooth operation with minimal vibration and friction. This construction is key to achieving its high limiting speed of 24,000 rpm, making it a top choice for high-speed applications.
- Optimized Material & Lubrication: Components made from chrome steel offer high durability and wear resistance. The bearing is pre-lubricated for immediate use, operating effectively within a temperature range of -30°C to 110°C.
7209 ACD/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance systems where precision, speed, and rigidity are critical. Key applications include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and lathes.
- High-Speed Motors & Spindles: In robotics, precision electric motors, and dental handpieces.
- Precision Gearboxes & Pumps: Where accurate shaft positioning and high load capacity are required.
