7209 CD/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 CD/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
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
14
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
9518 lbf
Radial static load rating
6975 lbf
Limiting speed
28 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:
$ 306.7
/ each
In Stock
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7209 CD/P4A Bearing Product Overview & Core Advantages
The 7209 CD/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior running accuracy. Operating under the P4 (ABEC-7) tolerance class, it is engineered to handle combined loads—significant radial loads and axial loads in one direction. Its key advantages include high-speed capability and high rigidity, making it an ideal component for machine tool spindles and other precision rotary systems where exact positioning and minimal runout are critical.
7209 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| CD | Indicates a 15° contact angle and optimized internal design for high rigidity and precise operation. |
| P4A | Denotes the P4 (ABEC-7) tolerance class, ensuring extremely tight dimensional and running accuracy for high-precision applications. |
7209 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row angular contact design with a 15° contact angle provides excellent rigidity and stable rotational accuracy, essential for minimizing deflection under load.
- Superior Load Capacity: Engineered to support combined radial and axial loads simultaneously. With a dynamic load rating of 9518 lbf and static load rating of 6975 lbf, it offers reliable performance in demanding conditions.
- High-Speed Performance: The phenolic resin cage reduces centrifugal forces and friction, contributing to a high limiting speed of 28,000 rpm. This makes it suitable for high-speed spindles.
- Optimized Material & Lubrication: Constructed from chrome steel for both rings and balls, ensuring durability and wear resistance. The bearing is pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
7209 CD/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Grinding & Milling Heads
- Precision Rotary Tables
- Industrial Pumps & Compressors
- Medical & Laboratory Equipment
