7009 ACEGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7009 ACEGA/P4A Bearing Product Overview & Core Advantages
The 7009 ACEGA/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing is engineered to handle combined radial and axial loads efficiently. Its extra light preload (Class A) ensures minimal deflection under operational stresses, making it ideal for high-speed spindles and other precision machinery. The universal matching (SU) designation allows for flexible mounting in duplex pairs to accommodate complex load requirements.
7009 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing series and size designation (45mm bore, 75mm OD). |
| ACE | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| GA | Indicates a universally matchable bearing, supplied in a set of two for duplex mounting (DB, DF, or DT). |
| P4A | Denotes a super-precision tolerance class with enhanced running accuracy and dimensional stability. |
7009 ACEGA/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: The P4A tolerance class ensures extremely tight dimensional control, resulting in superior running accuracy and system stability. Combined with the 25° contact angle, this design provides excellent resistance to operational deflection.
Optimized Load Capacity: The angular contact design is inherently suited to withstand combined radial and axial loads. The high radial dynamic load rating of 2722 lbf and static rating of 1834 lbf ensure reliable performance under demanding conditions.
High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces and reduces friction, contributing to a high limiting speed of 46,000 rpm. This makes the bearing suitable for high-speed applications.
Universal Matching: As a Universal Matchable (SU) bearing supplied in a set, it offers flexibility for pre-loading and mounting in various configurations (back-to-back, face-to-face, or tandem) to precisely control axial play and system rigidity.
7009 ACEGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
- Medical and Laboratory Equipment
