S7017 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S7017 ACB/HCP4A Bearing Product Overview & Core Advantages
The S7017 ACB/HCP4A 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 25° contact angle and is supplied with a specified preload, ensuring high system stiffness and minimal runout from the moment of installation. Its construction, featuring ceramic balls and a phenolic cage, is optimized for high-speed operation up to 14,000 rpm, while the integrated seals and factory-applied lubrication ensure long-term, maintenance-free performance. It is the ideal solution for spindles and other high-performance machinery where combination loads and rotational accuracy are critical.
S7017 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Benefit / Implication |
|---|---|---|
| S7017 | Basic bearing series and size designation (85mm bore, 130mm OD, 22mm width). | Defines the core bearing dimensions and internal geometry. |
| ACB | Angular Contact Bearing with a 25° contact angle and specific internal design. | Optimized for handling significant axial loads in one direction and radial loads simultaneously. |
| HC | Hybrid Ceramic: Features ceramic (silicon nitride) balls. | Reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds. Offers non-conductive properties and extended service life. |
| P4 | Tolerance class equivalent to ABEC-7. | Guarantees extremely tight dimensional and running accuracy for superior performance in precision applications. |
S7017 ACB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls with a steel ring significantly reduces weight and inertia, leading to lower friction, reduced heat generation, and a dramatic increase in the limiting speed compared to all-steel equivalents.
- High Rigidity & Preload: The bearing is supplied with a preload, which eliminates internal clearance. This results in a very high rigid system, improved shaft guidance, and enhanced positional accuracy, which is critical for machine tool spindles.
- Optimized High-Speed Cage: The lightweight, robust phenolic cage is engineered for high-speed stability. It offers excellent strength-to-weight ratio and operates effectively with minimal lubrication.
- Superior Sealing & Lubrication: As a sealed bearing, it is protected from contaminants. Pre-lubricated from the factory, it ensures immediate readiness and reliable, long-term operation, reducing maintenance needs.
- Precision-Grade Performance: Manufactured to P4 (ABEC-7) tolerance, this bearing guarantees minimal runout and vibration, directly contributing to the finish quality and accuracy of the end product.
S7017 ACB/HCP4A Bearing Typical Application Areas
The S7017 ACB/HCP4A is designed for high-performance machinery where speed, precision, and reliability are non-negotiable. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Motors for PCB drilling and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- Medical Equipment: Centrifuges and advanced imaging devices.
