S71907 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71907 CE/HCP4A Bearing Product Overview & Core Advantages
The S71907 CE/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This single-row bearing is manufactured to P4 (ABEC-7) tolerance class, ensuring minimal runout and superior rotational precision. Its key advantage lies in its ability to accommodate combined loads, handling significant radial loads alongside thrust loads in one direction, facilitated by its 15° contact angle. The bearing comes preloaded and pre-lubricated from the factory, simplifying installation and ensuring immediate, optimal performance in high-speed and high-rigidity applications.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71907 | Denotes the bearing series and size. S7 signifies a high-precision series, 19 indicates a 15° contact angle, and 07 specifies a 35mm bore diameter. |
| C | Specifies a 15° contact angle. |
| E | Indicates an optimized internal design, often including a larger ball complement and a phenolic cage for enhanced performance. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls (Silicon Nitride). |
| P4A | Confirms the P4 tolerance class (equivalent to ABEC-7), denoting very high precision levels. |
S71907 CE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls reduces weight, minimizes friction, and allows for higher operating speeds. Ceramic balls also offer superior resistance to wear and a longer service life.
- Phenolic Cage: The lightweight and robust phenolic resin cage contributes to smooth operation at very high speeds, providing excellent dimensional stability and low friction.
- High-Precision Design: Manufactured to P4 tolerance class, this bearing ensures minimal vibration and precise shaft positioning, which is critical for applications like machine tool spindles.
- Optimized Load Capacity: The 15° contact angle and robust internal geometry provide a high radial dynamic load rating of 1755 lbf and effective handling of axial loads.
- Preload & Sealing: Supplied as a preloaded unit, the bearing delivers high system rigidity and accurate rotational accuracy from the start. The sealed design protects against contamination.
S71907 CE/HCP4A Bearing Typical Application Areas
The S71907 CE/HCP4A is engineered for high-performance applications where precision, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines.
- Precision Instrumentation: High-speed measuring devices, optical scanners, and coordinate measuring machines (CMM).
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Speed Motors and Drives: Electric spindles, servo motors, and high-frequency motorized spindles.
