S7000 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7000 ACE/HCP4A Bearing Product Overview & Core Advantages
The S7000 ACE/HCP4A is a high-precision, single-row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and speed. Its defining characteristic is the 25° contact angle, optimized to support significant combined loads—handling both radial and substantial axial loads in one direction. Manufactured to the exacting P4 (ABEC-7) tolerance class, it guarantees superior running accuracy. The combination of a ceramic ball material and a phenolic cage enables outstanding high-speed performance, with a limiting speed of 98,000 rpm. Pre-greased and sealed, it offers a compact, reliable, and ready-to-install solution for high-rigidity spindle arrangements.
S7000 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7000 ACE | Series designation for a high-precision, single-row angular contact bearing. | Identifies the bearing's fundamental type and performance tier. |
| HCP4A | Indicates a P4 (ABEC-7) tolerance class and a 25° contact angle. | Ensures ultra-precise operation and optimized axial load capacity. |
| Sealed | The bearing is equipped with integral seals. | Protects against contamination and retains lubricant, enhancing service life and reliability. |
| Preload | Available with preload. | Eliminates internal clearance for maximum system rigidity and precise rotational accuracy. |
S7000 ACE/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & Rigidity: The use of ceramic (Si3N4) balls significantly reduces centrifugal forces, lowers operating temperature, and minimizes friction. Combined with the lightweight, self-lubricating phenolic resin cage, this design achieves an exceptional limiting speed of 98,000 rpm and provides high dynamic stiffness.
Load Capacity: The 25° contact angle is engineered to efficiently support combined radial and axial loads. With a dynamic load rating of 644 lbf and a static load rating of 256 lbf, it delivers robust performance in compact bearing dimensions (10mm bore, 26mm OD, 8mm width).
Precision & Longevity: Manufactured to P4 tolerance from high-grade chrome steel rings, this bearing ensures minimal runout and vibration. The integral seals protect the high-performance grease from contamination, resulting in a long, maintenance-free service life within a temperature range of -30°C to 110°C.
S7000 ACE/HCP4A Bearing Typical Application Areas
The S7000 ACE/HCP4A is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Instrumentation: Measuring devices, optical scanners, and laboratory equipment.
- High-Speed Motors and Drives: Servo motors, spindle motors, and turbo-molecular pumps.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and radar equipment.
