The Keyence TM-040 is a high-precision optical micrometer engineered for non-contact measurement of parts and components with unparalleled accuracy. With its wide measuring range, exceptional resolution, and stable light source, the TM-040 is ideal for demanding inspection and quality control applications in modern manufacturing environments.

At the core of the TM-040’s performance is its measuring range of ø40 mm (1.57″), allowing it to handle a wide variety of part sizes. This flexibility makes it suitable for inspecting both small precision components and larger parts, providing a versatile solution for industries that require reliable dimensional checks across diverse products.

The system boasts a minimum detectable object size of 0.3 mm (0.01″), making it exceptionally sensitive to even the smallest features. This capability is particularly valuable in fields such as electronics, precision machining, and medical device manufacturing, where extremely fine parts must be measured without error. Whether detecting tiny wires, pins, or edges, the TM-040 ensures that no detail goes unnoticed.

One of the TM-040’s most impressive specifications is its measurement accuracy of ±2 µm (0.000079″). This level of precision ensures consistent, repeatable results, reducing variability and supporting strict quality assurance standards. High accuracy is critical in industries such as automotive and aerospace, where even the smallest deviations in part dimensions can affect overall performance and safety.

The TM-040 relies on a stable InGaN Green LED light source, which delivers consistent illumination and high-contrast detection. The choice of green LED technology enhances accuracy by producing sharp, stable measurement signals, while also offering long operational life and reduced maintenance compared to traditional light sources. This ensures that the system remains dependable even in continuous, high-throughput environments.

The transmitter/receiver distance of 180 mm (7.09″) provides flexibility for installation, allowing the unit to be mounted in a wide range of setups without compromising measurement performance. This adaptability ensures the TM-040 can be easily integrated into production lines, inspection stations, or automated testing equipment.

Applications for the TM-040 span across precision engineering, automotive, electronics, medical, and metalworking industries. Typical uses include measuring diameters, detecting edge positions, checking for defects, and verifying the dimensional accuracy of critical components. Its non-contact design ensures measurements are taken without damaging delicate parts or altering their properties, which is crucial in sensitive manufacturing processes.

In summary, the Keyence TM-040 is a powerful optical micrometer that combines a wide ø40 mm measuring range with ultra-high ±2 µm accuracy, fine object detection down to 0.3 mm, and a stable InGaN Green LED light source. Compact, precise, and versatile, it is the perfect solution for manufacturers requiring reliable dimensional inspection to maintain the highest standards of quality and efficiency.