S7007 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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S7007 ACB/HCP4A Bearing Product Overview & Core Advantages
The S7007 ACB/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle, enabling it to support significant combined loads (radial and axial) simultaneously. Manufactured to P4 (ABEC-7) tolerance and preloaded, it delivers superior running accuracy and minimal vibration. The use of a ceramic ball and phenolic cage combination contributes to its high-speed capabilities, low heat generation, and extended service life, making it an ideal solution for high-performance spindles and precision machinery.
S7007 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7007 | Basic bearing series and size designation (35mm bore, 62mm OD, 14mm width). |
| ACB | Angular Contact Bearing with a 25° contact angle. |
| HCP4A | Indicates a P4 (ABEC-7) tolerance class and that the bearing is supplied with a specific preload for immediate high-rigidity performance. |
S7007 ACB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The 25° contact angle and factory-applied preload eliminate internal clearance, providing exceptional system stiffness and precise shaft positioning critical for machining accuracy.
- Superior High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic balls (Silicon Nitride) reduce centrifugal forces, enabling a high limiting speed of 34,000 rpm while maintaining low operating temperatures.
- Enhanced Durability & Long Life: Ceramic balls are harder, more wear-resistant, and electrically insulating compared to steel, significantly increasing bearing life, especially in contaminated or electrically sensitive environments.
- Optimized for Combined Loads: The angular contact design is engineered to efficiently handle combined radial and axial loads in one direction, a common requirement in spindle applications.
S7007 ACB/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units.
- High-Frequency Motors: Spindles for PCB drilling and semiconductor manufacturing equipment.
