Product Description

The Keyence FU-A40 is a high-precision fiber optic sensor head designed for use with Keyence's FS series amplifiers. It features a 40 mm wide array thrubeam detection area, making it ideal for detecting small objects or gaps in automated assembly lines. The sensor head is equipped with a 2-meter long fiber optic cable that is free-cuttable (excluding spiral sections), allowing for flexible installation in confined spaces. With an IP67 enclosure rating, it ensures reliable operation in harsh industrial environments.​

Technical Specifications

• Feature Specification
• Model FU-A40
• Type Array thrubeam 40 mm type
• Optical Axis Area 40 × 0.25 mm (1.575" × 0.01")
• Fiber Unit Length 2 m (6.6') (Free-cut; spiral parts cannot be cut)
• Fiber Diameter Ø2.2 mm (0.09")
• Minimum Bend Radius R10 mm (0.394")
• Minimum Detectable Object Ø2.5 mm opaque object
• Tightening Torque 0.75 N·m (7.5 kgf·cm)
• Enclosure Rating IP67
• Ambient Temperature -20 to +50 °C (No freezing)
• Relative Humidity 35% to 85% RH (No condensation)
• Material Case: Die-cast zinc; Detecting surface: PBT; Core fiber: Acrylic; Fiber sheath: Polyethylene
• Accessories Included Fiber cutter, Mounting screws (M4 × L8, 4 units)
• Weight Approx. 70 g