S7008 ACD/HCP4ATGC
Hybrid Ceramic Super Precision Bearings
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S7008 ACD/HCP4ATGC Bearing Product Overview & Core Advantages
The S7008 ACD/HCP4ATGC is a high-precision double-row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and reliability. This sealed bearing is designed to simultaneously accommodate combined loads (radial and bidirectional axial loads) with high rigidity. Its P4A tolerance class ensures ultra-precise running accuracy, while the ceramic balls and phenolic cage contribute to superior high-speed performance and extended service life. The pre-greased and sealed design offers a maintenance-free solution, making it ideal for compact, high-performance machinery.
S7008 ACD/HCP4ATGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | Angular Contact, Double Row design with a 25° contact angle. | Optimized for handling combined loads and providing high rigidity. |
| HC | Hybrid Ceramic (Silicon Nitride balls). | Reduced weight, lower friction, and superior performance at high speeds. |
| P4A | ABEC 7 / ISO P4A super-precision tolerance class. | Guarantees extremely low runout and vibration for high-precision applications. |
| TGC | Sealed on both sides and pre-lubricated with grease. | Provides contamination protection and maintenance-free operation. |
S7008 ACD/HCP4ATGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double-row angular contact design and 25° contact angle provide significantly higher radial and axial stiffness compared to single-row bearings, enabling stable operation under combined loads.
- Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage reduces centrifugal forces and friction, allowing for a high limiting speed of 41,000 rpm. This makes it an ideal high-speed bearing.
- Precision & Longevity: Manufactured to P4A tolerance class, this bearing ensures minimal vibration and precise rotational accuracy. The hybrid ceramic construction offers increased durability and resistance to wear.
- Maintenance-Free Operation: Integrated seals effectively retain grease and exclude contaminants, resulting in a long, reliable service life without the need for re-lubrication within the specified temperature range of -30°C to 110°C.
S7008 ACD/HCP4ATGC Bearing Typical Application Areas
This precision bearing is specifically designed for high-performance machinery where accuracy, speed, and reliability are paramount. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- High-Frequency Motors & Spindles: Used in PCB drilling and precision engraving equipment.
- Robotics: In high-accuracy robot arm joints and rotary units.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and other critical rotating assemblies.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
