S7006 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7006 ACDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.096 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
55 mm
Outside diameter tolerance
-0.004mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3105 lbf
Radial static load rating
1721 lbf
Limiting speed
71.5 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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S7006 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S7006 ACDGA/HCP4A is a super-precision double row angular contact ball bearing engineered for the most demanding high-speed and high-rigidity applications. Its fundamental advantage lies in its ability to accommodate combined radial and axial loads from both directions simultaneously. Manufactured to an exceptionally tight P4A tolerance class and featuring a ceramic ball and phenolic cage construction, this bearing delivers superior rotational accuracy, reduced heat generation, and extended service life, making it the ideal choice for ultra-precision spindles and machinery.
S7006 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7006 | Basic bearing series and size designation (30mm bore, 55mm OD, 13mm width). | Defines the core bearing dimensions. |
| AC | 25° Contact Angle. | Optimized for high axial load capacity and high-speed performance. |
| D | Double Row Design. | Provides high rigidity and moment load capacity. |
| GA | Universal Matchable (SU) bearing in a set of 2 with Extra Light (A) preload. | Ensures simplified mounting and optimal preload for maximum system precision. |
| HC | Hybrid Ceramic (Ceramic balls with steel rings). | Reduces friction, heat, and wear; enables higher speeds and longer life. |
| P4A | Super Precision Tolerance Class (ABEC 7 / ISO P4). | Guarantees exceptional running accuracy and minimal vibration for precision bearing applications. |
S7006 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design provides superior radial and axial stiffness, enabling it to handle significant combined loads and moment loads with minimal deflection, which is critical for machining accuracy.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage, low-friction ceramic balls, and a 25° contact angle allows for an extremely high limiting speed of 71,500 rpm. This reduces centrifugal forces and operating temperature.
- Enhanced Durability and Longevity: Hybrid ceramic construction offers excellent resistance to wear and is less susceptible to lubrication starvation. The sealed design with pre-applied grease lubrication protects against contamination, ensuring long-term, maintenance-free operation within a -30°C to 110°C range.
- Precision Engineering: Manufactured to P4A tolerance standards with universal matching (SU), this bearing ensures predictable performance, ease of installation, and consistent preload in matched sets.
S7006 ACDGA/HCP4A Bearing Typical Application Areas
This precision bearing is specifically designed for high-performance applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed CNC machining centers, grinding spindles, and milling spindles.
- Precision Instrumentation: High-speed measuring and inspection equipment.
- Advanced Robotics: High-precision robot arm joints and direct-drive motors.
- Aerospace & Defense: Gyroscopes, radar systems, and other critical navigation components.
