KEYENCE FU-77V High-Flex Fiber Optic Sensor Head
The FU-77V is a high-performance thrubeam fiber optic sensor head from Keyence, engineered specifically for high-precision detection in dynamic industrial environments. Designed with a specialized high-flexibility core, this model is built to withstand the physical stress of constant bending and movement. Its slim-sleeve design and robust stainless steel construction make it an ideal choice for narrow installations and robotic applications where long-term durability is a critical requirement.
Technical Specifications and Ratings
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Model: FU-77V (Thru-beam type)
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Fiber Unit Length: 2.0 m (Free-cut)
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Fiber Diameter: ø1.0 mm x 2
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Minimum Bend Radius: R2 mm (High-flex)
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Minimum Detectable Object: ø0.005 mm (when used with high-power amplifiers)
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Ambient Temperature: -40 to +70 °C (-40 to 158 °F)
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Housing Material: Stainless steel (SUS303)
Precision Engineering for Moving Machinery
The FU-77V is distinguished by its R2 mm bend radius, which utilizes a multi-core fiber structure to prevent light loss and fiber fatigue. This allows the sensor to be routed through compact cable carriers and tight mechanical joints without the risk of cable breakage or signal degradation.
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Ultra-Small Object Detection: Capable of detecting targets as small as 5 microns, providing the sensitivity required for advanced semiconductor and medical device manufacturing.
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Corrosion-Resistant Housing: The tip is encased in SUS303 stainless steel, offering high resistance to mechanical impact and common industrial chemicals.
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Free-Cut Installation: The 2-meter cable is user-customizable, allowing for a precise fit within the machine layout using the standard Keyence fiber cutter.
Industrial Applications and Integration
The KEYENCE FU-77V is optimized for high-speed automated processes, including:
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Robotic End-Effector Sensing: Reliability for sensors mounted on moving robot arms and grippers.
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Electronics Assembly: Detecting the presence and orientation of miniature pins, connectors, and SMD parts.
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High-Speed Counting: Accurate triggering for small components passing through the light axis at high velocities.
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Amplifier Compatibility: Designed for maximum performance when paired with Keyence digital fiber amplifiers, such as the FS-N40, FS-N10, and FS-V30 series.
