S71917 CD/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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S71917 CD/HCP4A Bearing Product Overview & Core Advantages
The S71917 CD/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to a P4 (ABEC-7) tolerance class, it provides superior running accuracy. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. The bearing is preloaded and comes pre-lubricated for immediate use, offering high rigidity, excellent high-speed capabilities, and reliable operation within a temperature range of -30° to 110 °C.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71917 | Basic bearing series, indicating a metric 85 mm bore, 120 mm OD, and 18 mm width. |
| CD | Indicates a 15° contact angle and a specific internal design optimized for high precision and high-speed operation. |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4 | Denotes the tolerance class (ABEC-7), ensuring extremely tight dimensional and running accuracy. |
| A | Indicates that the bearing is supplied with a specific preload for enhanced rigidity. |
S71917 CD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This extends bearing life and allows for higher limiting speeds compared to all-steel bearings.
- High Rigidity & Preload: The bearing is supplied with a preload, which eliminates internal clearance. This results in superior stiffness and precise shaft positioning, critical for applications with minimal deflection requirements.
- Optimized High-Speed Performance: The lightweight phenolic cage and low-friction ceramic balls work in concert to enable a high limiting speed of 14,000 rpm, making it an ideal high-speed bearing.
- Superior Load Capacity: With a 15° contact angle, this bearing is engineered to handle combined loads effectively, offering a dynamic load rating of 10,395 lbf and a static load rating of 10,800 lbf.
- Sealed & Lubricated for Life: As a sealed bearing, it is protected from contamination and comes pre-lubricated, offering a maintenance-free solution within its specified temperature range.
S71917 CD/HCP4A Bearing Typical Application Areas
The S71917 CD/HCP4A is suited for high-performance machinery where precision, speed, and reliability are paramount. Key sectors include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Medical Equipment: Dental handpieces, high-speed centrifuges.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and auxiliary power units.
- High-Frequency Motors and Spindles: Electric motors for robotics and CNC machinery.
- Advanced Pump and Compressor Systems
