S7012 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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S7012 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The S7012 CE/HCP4ADBA is a precision duplex angular contact ball bearing engineered for the most demanding high-performance applications. This matched set features a Back-to-Back (DB) arrangement, delivering exceptional system rigidity and stability. Its core advantages include the ability to handle combined loads (radial and axial) simultaneously, superior running accuracy from its P4A tolerance class, and outstanding high-speed capability enabled by its ceramic balls and phenolic cage. This configuration is ideal for spindles requiring maximum precision, stiffness, and rotational accuracy.
S7012 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7012 | Bearing series and size designation | Indicates a 60mm bore, 95mm OD, 36mm width bearing from a specific high-performance series. |
| CE | Ceramic Balls | Utilizes silicon nitride (ceramic) balls for reduced centrifugal force, lower friction, and higher limiting speed. |
| HC | Phenolic Resin Cage | A lightweight, robust cage ideal for high-speed operation and minimal friction. |
| P4A | Tolerance Class | Denotes ultra-precision dimensional and running accuracy, superior to standard ABEC 7/P4. |
| DB | Duplex Back-to-Back Arrangement | Two bearings are mounted opposing each other, providing high moment rigidity and accommodating axial loads in both directions. |
| A | Preload | Specifies an "Extra Light" preload, minimizing friction and heat generation while ensuring high rigidity. |
S7012 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
Exceptional Rigidity and Load Capacity: The duplex Back-to-Back (DB) arrangement creates a highly rigid bearing system capable of withstanding combined radial and axial loads as well as moment loads. This configuration is critical for applications where shaft deflection must be minimized.
Superior High-Speed Performance: The combination of ceramic balls (CE) and a phenolic cage (HC) is engineered for high-speed operation. Ceramic balls are lighter, reducing centrifugal forces and allowing for a higher limiting speed of 36,000 rpm. They also exhibit lower thermal expansion and superior wear resistance.
Ultra-Precision Operation: Manufactured to a P4A tolerance class, this bearing ensures minimal runout and vibration, which is paramount for achieving the highest levels of machining accuracy and surface finish.
Optimized for Pre-greased Operation: The bearing comes sealed and pre-lubricated with grease, protecting it from contamination during handling and installation, and is ready for immediate use within its specified temperature range.
S7012 CE/HCP4ADBA Bearing Typical Application Areas
This high-precision, high-speed bearing set is designed for advanced machinery where accuracy and rigidity are non-negotiable. Key applications include:
- High-Frequency Machine Tool Spindles: For CNC milling, grinding, and jig boring machines.
- Precision Grinding Spindles: Where extreme running accuracy is required.
- High-Speed Motors and Drives: Particularly in the semiconductor and electronics manufacturing industries.
- Advanced Robotic Systems: For high-accuracy joints and rotary actuators.
- Aerospace and Defense Instrumentation: In gyroscopes, radar systems, and other precision guidance equipment.
