S7004 CE/P4AQBCA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7004 CE/P4AQBCA Bearing Product Overview & Core Advantages
The S7004 CE/P4AQBCA is a super-precision angular contact ball bearing designed for the most demanding applications. Its Quadruplex Back-to-Back (QBC) matched arrangement provides exceptional system rigidity and stability, making it ideal for machine tool spindles and other high-precision machinery. This bearing is preloaded to Extra light / Class A standards and manufactured to P4A tolerance class, ensuring superior running accuracy and consistent performance under high-speed operation and combined loads.
S7004 CE/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7004 | Bearing Series & Size | Indicates a 20mm bore, 42mm OD, 48mm width super-precision bearing. |
| CE | High-Grade Phenolic Cage | Facilitates high-speed performance and excellent lubrication retention. |
| P4A | Tolerance Class | Denotes ultra-precision dimensional and running accuracy, superior to ABEC 7. |
| QBC | Matched Arrangement | "Quadruplex Back-to-Back" – a set of four bearings matched for optimal load distribution and rigidity. |
| A | Preload | Specifies "Extra light" preload, minimizing friction and heat generation for high-speed applications. |
S7004 CE/P4AQBCA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The Quadruplex Back-to-Back (QBC) arrangement creates an extremely rigid bearing system capable of withstanding heavy combined loads (radial and axial) and moments. The 15° contact angle is optimized for high-speed stability and axial load carrying.
Optimized for High-Speed Operation: The lightweight, robust phenolic cage (CE) reduces centrifugal forces and ensures stable operation at the limiting speed of 100,000 rpm. Factory-applied grease lubrication is tailored for the specified temperature range of -30°C to 110°C.
Precision Engineering: Manufactured to P4A tolerance class with tight bore, OD, and width tolerances, this bearing guarantees minimal runout and vibration, which is critical for achieving superior surface finishes and machining accuracy.
S7004 CE/P4AQBCA Bearing Typical Application Areas
The S7004 CE/P4AQBCA is engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed hand tools.
- Robotics: High-accuracy joints and rotary actuators.
