In scenarios such as photoelectric testing, sample scanning, and fixture alignment, many devices not only require a sufficiently long adjustment stroke but also need to bear heavy optical components. Ordinary light-load translation stages are difficult to balance both the stroke and the load capacity. The Sefan Optoelectronics 7STM05125 manual translation stage adopts a dovetail guide rail structure and is equipped with a precisely ground screw drive. It is mainly designed for high load capacity and a 125mm long stroke. It is a high-capacity manual displacement unit for industrial testing and scientific research setups.

Unlike light-load translation stages with cross roller structures, the core advantage of this translation stage is the dovetail guide rail. It has a strong structural rigidity and a larger supporting surface, with a horizontal load capacity of up to 20kg. It can safely carry components such as lenses, detectors, sample fixtures, and heavy clamps, and is less likely to cause platform deflection or deformation. It is suitable for long-term static positioning of heavy objects. The transmission relies on a precisely ground screw, providing sufficient driving force. The handwheel can be adjusted smoothly without getting stuck, and the positioning accuracy is 0.05mm, meeting most testing conditions that do not require ultra-high precision below the micrometer level but value load-bearing.

Its effective stroke is 125mm, with a center-driven layout, making operation intuitive. During large-scale movement, there is no need to repeatedly disassemble and adjust. The tabletop size is 60×63mm, with standard optical installation holes reserved on the tabletop and the base, suitable for optical platforms, adapter bases, and supports the free combination with other translation stages of the same series. It can quickly build two-dimensional, three-dimensional, and multi-dimensional adjustment mechanisms, and flexibly adapt to the entire testing optical path or fixture positioning system. The self-weight is only 0.65kg, balancing structural strength, and when stacked, it will not impose an additional heavy burden on the underlying structure.

7STM05125 is more suitable for scenarios prioritizing load-bearing capacity and long-stroke coarse positioning: laser marking auxiliary alignment, photoelectric sample scanning testing, teaching optical platforms, machine vision camera adjustment, industrial small sample calibration, spectral detection fixture adjustment, etc. Many laboratories and production lines do not want to pay high import equipment costs for heavy-load positioning. This translation stage can well replace them, with stable supply and convenient after-sales support.

Each unit is tested for screw alignment and guide rail running, ensuring a stable and durable structure, suitable for long-term and frequent debugging. The Sefan 7STM05 series dovetail guide translation stages, with a solid mechanical structure, complement the heavy-load and long-stroke manual displacement requirements, providing a stable and reliable positioning solution for the large-scale adjustment of heavy optical components.