M4 Size Fiber Unit
The FU-66 is an M4-size reflective fiber optic unit designed for mounting in space-constrained sensing positions.
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Keyence
Keyence FU-66 Fiber Optic Sensor Fiber Unit
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$9.95
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Keyence |
| Model Number | FU-66 |
| Product Category | Fiber Optic Sensor Fiber Unit |
| Size | M4 |
| Detection Arrangement | Parallel |
| Fiber Unit Length | 2 m Free-cut |
| Fiber Unit Diameter | ø1.3 × 2 mm |
| Shape | Straight |
| Minimum Bend Radius | R25 mm |
| Minimum Detectable Object | ø0.005 mm Gold Wire |
| Ambient Temperature | -40°C to +70°C |
| Weight | Approx. 10 g |
Key Features
Parallel Detection Arrangement
Parallel fiber arrangement supports reflective sensing configurations when paired with a compatible fiber amplifier.
2 m Free-Cut Fiber Length
The fiber unit is supplied in a 2 m length that can be cut to suit installation routing requirements.
ø0.005 mm Minimum Detectable Object
Published specifications identify a minimum detectable object of ø0.005 mm gold wire under optimized detecting distance and sensitivity settings.
-40°C to +70°C Ambient Range
The fiber unit is specified for ambient temperatures from -40°C to +70°C.
R25 mm Minimum Bend Radius
A minimum bend radius of R25 mm is specified for routing the fiber without exceeding the published bending limit.
Applications
- Small-object detection in automated machinery
- Presence and positioning checks in confined spaces
- Fiber-optic sensing where the amplifier is remotely mounted
- Industrial automation sensing installations
- Reflective sensing setups using compatible fiber amplifiers
- Space-limited detection points in production equipment
- General industrial fiber-optic sensing integration
- Sensing tasks requiring a free-cut fiber length
Purchase Information
We support online purchase of the Keyence FU-66 Fiber Optic Sensor Fiber Unit. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is the Keyence FU-66? The Keyence FU-66 is a reflective fiber optic sensor fiber unit in the M4 size class.
What is the detection arrangement of the FU-66? The FU-66 uses a parallel detection arrangement.
What is the fiber unit length? The fiber unit length is 2 m and is free-cut.
What is the fiber diameter? The fiber unit diameter is ø1.3 × 2 mm.
What is the minimum detectable object? Published specifications list a minimum detectable object of ø0.005 mm gold wire under optimized conditions.
What is the minimum bend radius? The minimum bend radius is R25 mm.
What is the ambient temperature range? The specified ambient temperature range is -40°C to +70°C.
What is the weight of the FU-66? The FU-66 weighs approximately 10 g.
Does the FU-66 include a fiber amplifier? The FU-66 is a fiber unit; detecting distance details are provided in the compatible fiber amplifier catalog.
What should be checked before ordering? Check the M4 mounting size, parallel fiber arrangement, 2 m free-cut length, R25 mm bend radius, and ambient temperature compatibility with the intended installation.
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