S7008 ACD/P4ADBC
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7008 ACD/P4ADBC Bearing Product Overview & Core Advantages
The S7008 ACD/P4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and rotational accuracy. This matched back-to-back (DB) arrangement provides superior stability under combined loads, simultaneously handling significant radial and bidirectional axial forces. Manufactured to P4A tolerance class and featuring a phenolic cage with grease lubrication, it delivers high-speed performance and reliable operation in compact, high-precision machinery.
S7008 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACD | Angular Contact, Duplex (Back-to-Back) | Provides high moment rigidity and stable bearing preload |
| P4A | High Precision Tolerance Class | Ensures exceptional running accuracy and minimal vibration |
| DBC | Duplex Back-to-Back, Moderate Preload (Class C) | Optimized for applications requiring high rigidity and precise shaft positioning |
S7008 ACD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back configuration creates a wide effective spread, significantly increasing moment stiffness and enabling the bearing to handle combined radial and axial loads efficiently. The 25° contact angle is optimized for substantial axial load carrying capacity.
- Precision & Speed Performance: Manufactured to P4A tolerance standards with a lightweight phenolic cage, this bearing achieves smooth operation at high rotational speeds (up to 41,000 rpm) with minimal friction and heat generation.
- Optimized for Reliability: The sealed design with factory-applied grease protects against contamination and provides long-term lubrication, ensuring consistent performance and extended service life within a temperature range of -30°C to 110°C.
- Superior Material Construction: Made from chrome steel for both rings and balls, the bearing offers high durability and resistance to fatigue, supporting the dynamic load rating of 5850 lbf.
S7008 ACD/P4ADBC Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for applications where high rigidity and rotational accuracy are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Gearboxes and Robotic Drives
- High-Frequency Motors and Spindle Drives
- Medical Equipment: Centrifuges and high-speed scanners
- Aerospace Actuation Systems
