S7008 ACE/HCP4BVG275
Hybrid Ceramic Super Precision Bearings
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S7008 ACE/HCP4BVG275 Bearing Product Overview & Core Advantages
The S7008 ACE/HCP4BVG275 is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional speed, rigidity, and accuracy. This single-row bearing is distinguished by its ceramic balls and P4 (ABEC-7) super-precision tolerance, enabling superior performance in high-speed spindles and precision machinery. Its design is optimized to handle significant combined loads (radial and axial) simultaneously, providing reliable and stable operation. The preloaded configuration ensures minimal axial play, resulting in enhanced system rigidity and positional accuracy.
S7008 ACE/HCP4BVG275 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Interpretation |
|---|---|
| S7008 | Denotes the bearing series and size (40mm bore, 68mm OD, 15mm width). |
| ACE | Indicates a 25° contact angle and a specific internal design optimized for high-speed operation. |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4 | Specifies the P4 tolerance class (ABEC-7), ensuring extremely tight dimensional and running accuracy. |
| BVG275 | Refers to the specific preload grade and internal clearance. |
S7008 ACE/HCP4BVG275 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperatures, and extends service life, especially at high speeds (up to 32,000 rpm). Ceramic's inherent properties also provide superior resistance to wear and electrical arcing.
Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction, contributing to smooth operation and high limiting speed.
High Rigidity & Load Capacity: The 25° contact angle and preload are engineered to deliver high system stiffness and excellent capacity for combined radial and axial loads (Dynamic: 2632 lbf, Static: 1620 lbf).
Precision & Reliability: Manufactured to P4 tolerance, this bearing ensures minimal runout and vibration, which is critical for achieving high levels of machining accuracy and surface finish.
S7008 ACE/HCP4BVG275 Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed CNC machining centers, grinding spindles.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense: Gyroscopes, navigation systems, and auxiliary power units.
- High-Speed Motors & Drives: Electric motor spindles and high-frequency spindles.
