S71915 CE/HCP4AQBCA
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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S71915 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The S71915 CE/HCP4AQBCA is a super-precision angular contact ball bearing designed for the most demanding high-performance applications. This quadruplex back-to-back (QBC) matched set delivers exceptional system rigidity and stability, capable of handling complex combined loads including radial and multi-directional axial forces. Manufactured to an ultra-precise P4A tolerance class and featuring ceramic balls, it is engineered for superior high-speed performance, extended service life, and reliable operation in critical machinery.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S71915 CE | Super-precision bearing series with 75mm bore | Denotes a high-precision, high-speed angular contact bearing design. |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Reduces centrifugal forces, lowers friction, and enables higher speeds and longer life. |
| P4A | ABEC 7 / ISO P4A Tolerance Class | Specifies extremely tight dimensional and running accuracy for superior performance. |
| QBC | Quadruplex Back-to-Back Arrangement | A set of four bearings matched and preloaded to provide maximum system rigidity. |
S71915 CE/HCP4AQBCA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The quadruplex back-to-back configuration creates an exceptionally stiff bearing system, ideal for applications where shaft deflection must be minimized. This arrangement provides robust support for heavy combined loads and moment loads.
Superior High-Speed Capability: The combination of hybrid ceramic balls and a lightweight phenolic cage significantly reduces rotating mass and centrifugal forces. This allows the bearing to achieve a high limiting speed of 28,000 rpm with minimal heat generation.
Enhanced Durability and Precision: The 15° contact angle and P4A precision grade ensure smooth, quiet, and accurate rotation. The extra light preload (Class A) eliminates internal clearance for precise positioning and immediate response to load changes.
Sealed and Lubricated for Reliability: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate installation, offering long-term, maintenance-free operation within its specified temperature range.
S71915 CE/HCP4AQBCA Bearing Typical Application Areas
The S71915 CE/HCP4AQBCA is specified for high-end machinery requiring ultimate precision, speed, and rigidity. Key applications include:
- High-Frequency Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Robotic Drives and Actuators
- High-Speed Dental and Medical Handpieces
- Aerospace Instrumentation and Gyroscopes
- Advanced Semiconductor Manufacturing Equipment
