7009 ACE/P4ADT
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7009 ACE/P4ADT Bearing Product Overview & Core Advantages
The 7009 ACE/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) arrangement bearing set is preloaded and manufactured to P4A tolerance class, ensuring superior running accuracy and rotational precision. Its primary advantage lies in its ability to handle significant combined loads—high radial loads and unidirectional axial loads—making it an ideal solution for high-rigidity, high-speed spindle systems where minimal deflection is critical.
7009 ACE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing designation (45mm bore, 75mm OD, 32mm width) |
| ACE | 25° contact angle design, optimized for high axial load capacity |
| P4A | High precision tolerance class (superior to ABEC 7), ensuring minimal runout and vibration |
| DT | Duplex Tandem arrangement - two bearings mounted in tandem to increase axial load capacity in one direction |
7009 ACE/P4ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem configuration and 25° contact angle create an exceptionally rigid bearing system capable of withstanding heavy combined radial and axial loads. The preloaded setup eliminates internal clearance, providing immediate response and superior positional accuracy.
High-Speed Performance: Featuring a phenolic resin cage that reduces centrifugal forces and friction, this bearing achieves a limiting speed of 46,000 rpm. The optimized internal geometry and precision manufacturing contribute to smooth operation at elevated rotational speeds.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal vibration and exceptional running accuracy for precision applications.
Material Excellence: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and long service life under demanding operating conditions.
7009 ACE/P4ADT Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Motors: Spindle motors, high-frequency motors, and precision drive systems
- Aerospace Components: Gyroscopes, navigation systems, and aircraft instrumentation
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
