S7030 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7030 ACD/HCP4A Bearing Product Overview & Core Advantages
The S7030 ACD/HCP4A is a high-precision, single-row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. Its defining characteristic is the 25° contact angle, optimized to support significant combined loads—handling both radial and axial forces simultaneously with high efficiency. Manufactured to a P4 (ABEC-7) tolerance class, it guarantees ultra-precise running accuracy. The bearing is preloaded and comes sealed and lubricated from the factory, making it a ready-to-install, high-reliability component ideal for high-speed spindles and other precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7030 | Basic bearing designation, indicating a metric series 70 angular contact bearing with a 150 mm bore and 225 mm outside diameter. |
| ACD | Signifies a 25° contact angle and a specific internal design optimized for high rigidity and precise operation. |
| HC | Indicates the use of Hybrid Ceramic components, specifically ceramic balls for reduced friction, lower operating temperature, and extended service life. |
| P4A | Denotes a P4 tolerance class (equivalent to ABEC-7), representing a very high level of dimensional and running accuracy. |
S7030 ACD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation. This results in higher limiting speeds (6,700 rpm), reduced wear, and superior performance in high-speed applications.
- High Rigidity and Load Capacity: The 25° contact angle and robust internal geometry provide excellent support for combined loads, offering a high dynamic load rating of 36,675 lbf and static load rating of 40,500 lbf.
- Precision & Stability: The P4 tolerance and preload ensure minimal runout and precise shaft positioning, which is critical for applications like machine tool spindles. The phenolic cage is lightweight and ensures smooth operation at high speeds.
- Sealed and Lubricated for Long Life: As a sealed bearing supplied with factory-applied lubrication, it is protected from contamination and is maintenance-free, ensuring consistent performance within its specified temperature range of -30° to 110 °C.
S7030 ACD/HCP4A Bearing Typical Application Areas
The S7030 ACD/HCP4A is ideally suited for high-performance machinery where precision, speed, and reliability are paramount. Key applications include:
- High-Speed Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Grinding Spindles
- High-Frequency Motors
- Advanced Robotics and Automation Equipment
- Aerospace and Defense Instrumentation
