S7209 ACD/P4ADBAVP020
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7209 ACD/P4ADBAVP020
Basic Information
System of measurement
Metric
Weight
0.84 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.004mm to 0
Width
38 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°C to 110 °C
Radial dynamic load rating
14918 lbf
Radial static load rating
13500 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
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
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S7209 ACD/P4ADBAVP020 Bearing Product Overview & Core Advantages
The S7209 ACD/P4ADBAVP020 is a precision duplex angular contact ball bearing designed for applications requiring exceptional rigidity and accuracy. This matched back-to-back (DB) arrangement provides superior stability and is preloaded to Extra Light (Class A) specifications, ensuring minimal deflection under load. It excels at handling combined radial and axial loads simultaneously, making it ideal for high-speed, high-precision machinery where maximum stiffness and rotational accuracy are critical.
S7209 ACD/P4ADBAVP020 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact, Duplex arrangement |
| P4A | High precision tolerance class, superior to ABEC-7 |
| DB | Back-to-Back mounting, optimized for moment load capacity |
| AVP020 | Specific internal design and grease lubrication code |
S7209 ACD/P4ADBAVP020 Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide effective spread, significantly increasing system rigidity and resistance to moment loads, which is crucial for maintaining precision under operating forces.
- Superior Load Capacity: With a 25° contact angle and a dynamic load rating of 14,918 lbf, this bearing is engineered to handle demanding combined loads effectively.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class and featuring a lightweight phenolic cage, it ensures smooth operation and allows for a high limiting speed of 46,000 rpm.
- Sealed & Pre-Lubricated: The sealed design and factory-applied grease lubrication protect against contamination and provide long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S7209 ACD/P4ADBAVP020 Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Grinding Spindles
- Precision Robotics
- High-Frequency Machining Centers
- Medical & Dental Equipment Spindles
