- Size: M6
- Detection arrangement: Parallel
- Fibre unit length: 2 m78.74″ free-cut
- Fibre unit diameter: √∏2.2√ó2
- Minimum bend radius: R2 mm0.079″ Tough-Flex
Free Shipping: $50+ U.S. orders | $350+ International orders
12-Month Warranty
Hassle-Free Returns Within 30 days
Over 100,000 parts in stock
- Brand: Keyence
Keyence FU-61Z Fiber Optic Sensor, Reflective Fiber Unit
Mfr # FU-61Z
$98.87
/ea
Availability: Available to Order|Typically ships within 7 to 10 business days. Lead time may vary based on supplier availability.
- Free shipping on U.S. orders over $50 and international orders over $350.
- Hassle-Free 30-Day Returns.
- 12-Month Warranty for all products.
- Get 10% off—join our email list.
Accepted Payments
- Ultra-Fine Detection Capability
Can detect gold wire as thin as 0.005 mm, ideal for precision applications. - Flexible Tough-Flex Design
With a minimum bend radius of 2 mm, it allows easy routing in compact or complex layouts. - Free-Cut Fiber Length
Comes with a 2 m fiber length that can be cut to suit installation requirements. - Rugged and Reliable Performance
Operates reliably from -40 to +50 °C, with a durable straight-shape M6 housing.
The Keyence FU-61Z Reflective Fiber Unit is a high-precision sensing solution engineered for applications where extreme detection accuracy and durability are required. Designed to pair seamlessly with Keyence’s fiber optic amplifiers, the FU-61Z is built to handle delicate detection tasks in demanding environments, while offering flexible installation options to meet diverse industrial needs.
A standout feature of the FU-61Z is its ultra-fine detection capability. With the ability to sense gold wire as thin as 0.005 mm in diameter, it is ideally suited for industries such as semiconductor manufacturing, electronics, and precision engineering. This exceptional sensitivity ensures reliable detection of micro-sized targets that are beyond the capabilities of standard sensors, helping manufacturers maintain strict quality control in high-tech processes.
The fiber unit is designed with Tough-Flex technology, enabling a minimum bend radius of only 2 mm. This flexibility allows the fiber to be routed through confined spaces and around tight corners without risk of breakage or performance loss. Combined with its straight M6 housing and parallel detection arrangement, the FU-61Z supports stable alignment and installation in both compact and complex machinery layouts.
Another advantage of the FU-61Z is its 2-meter free-cut fiber length, which can be customized on-site to suit installation requirements. This makes setup more efficient, reduces excess cable, and allows engineers to optimize system layouts. By offering flexibility in length and routing, the FU-61Z contributes to cleaner, more reliable installations.
The unit is also engineered for rugged performance under demanding conditions. With an operating temperature range of -40 to +50 °C, it is well-suited for environments with temperature fluctuations, whether in cold storage facilities or heated industrial areas. Despite its durability, the FU-61Z is lightweight at approximately 22 g, making it easy to handle and install without adding strain to system components.
By combining precision detection, robust construction, and flexible design, the Keyence FU-61Z Reflective Fiber Unit stands out as a dependable choice for advanced sensing applications. Its ability to detect ultra-fine objects ensures superior inspection quality, while its Tough-Flex design and environmental resistance guarantee long-term reliability in industrial settings.
In summary, the FU-61Z provides manufacturers with the performance and flexibility needed for accurate detection in cutting-edge applications. Whether used in micro-component inspection, wire detection, or precision assembly verification, it delivers stable, accurate, and consistent results that support productivity and quality assurance.
Product Specifications
| Manufacturer | Keyence |
|---|
We’re Always Ready to Assist You
Submit A Request
Reach us through our form.
Give Us A Call
Connect with a representative.
Live Chat
Chat live with our support team.

Reviews
There are no reviews yet.