S7011 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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S7011 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S7011 ACDGA/HCP4A is a high-precision double row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and reliability. This sealed bearing features a 25° contact angle and is manufactured to P4A tolerance class, delivering superior running accuracy. Its core advantages include the ability to accommodate combined loads (radial and bidirectional axial loads) simultaneously, high operational stiffness due to its double row design, and excellent high-speed performance enabled by its phenolic cage and ceramic balls. Preloaded to extra light (Class A) and pre-greased, it offers immediate, maintenance-free operation in a compact package.
S7011 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Advantage |
|---|---|---|
| S7011 | Basic bearing designation (55mm bore, 90mm OD, 18mm width) | Standard bearing dimensions for design compatibility |
| AC | 25° Contact Angle | Optimized for handling significant axial loads |
| D | Double Row Design | Provides high rigidity and increased load capacity |
| GA | Light Preload (Class A) | Minimizes deflection for enhanced precision |
| HC | Hybrid Ceramic (Ceramic Balls, Steel Rings) | Reduced friction, higher limiting speed, and longer service life |
| P4A | High Precision Tolerance Class | Guarantees exceptional running accuracy and low vibration |
S7011 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation, enabling higher operating speeds (up to 34,000 rpm) and providing electrical insulation. This construction also offers superior resistance to wear and a longer operational lifespan compared to all-steel bearings.
High Rigidity & Load Capacity: The double row angular contact design provides substantial radial and axial stiffness, making it ideal for applications subject to complex combined loads. With a dynamic load rating of 8348 lbf and a static load rating of 6975 lbf, it delivers robust performance under demanding conditions.
Optimized for High-Speed Operation: The lightweight phenolic cage ensures excellent dimensional stability and low centrifugal forces at high speeds, contributing to the high limiting speed. The integral seals retain grease and protect against contamination, ensuring consistent performance.
Precision & Preload: Manufactured to P4A tolerances and supplied with a light preload (Class A), this bearing achieves minimal runout and high positional accuracy, which is critical for precision machinery.
S7011 ACDGA/HCP4A Bearing Typical Application Areas
The S7011 ACDGA/HCP4A is ideally suited for high-performance applications across various industries, including:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines.
- Precision Instrumentation: Measuring devices, optical scanners, and laboratory equipment.
- High-Speed Motors and Drives: Electric spindles, servo motors, and high-frequency drives.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and actuation mechanisms.
