S7009 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S7009 ACDGA/P4A Bearing Product Overview & Core Advantages
The S7009 ACDGA/P4A is a high-precision single row angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered with P4A super-precision tolerance and an extra light preload (Class A), it delivers superior rotational accuracy and minimal runout. Its 25° contact angle provides excellent performance for combined radial and axial loads. The phenolic cage and sealed design contribute to its high-speed capability and consistent operation in demanding environments.
S7009 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7009 | Basic bearing series designation |
| AC | Angular Contact design |
| DGA | Designates specific internal geometry and preload (Extra light/Class A) |
| P4A | Super precision tolerance class, superior to ABEC 7 |
S7009 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width for exceptional running accuracy.
Optimized Load Capacity: The 25° contact angle enables efficient handling of combined radial and axial loads, while the 17 chrome steel balls (9.525 mm diameter) provide high load density.
High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at limiting speeds up to 46,000 rpm.
Thermal Stability: The phenolic cage material maintains dimensional stability across the operating temperature range of -30°C to 110°C.
Universal Matching Capability: Designed as Universal Matchable (SU), allowing precise bearing arrangements in sets of 3 for optimal preload and stiffness control.
S7009 ACDGA/P4A Bearing Typical Application Areas
The S7009 ACDGA/P4A is ideally suited for:
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Motors - Spindle motors and high-frequency applications
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Guidance systems and precision mechanisms
