The GenGrind FA-IC 250D features four constant speed levels labeled V1 to V4, which are preset at 300, 500, 800, and 1000 revolutions per minute (r/min). These options provide users with quick access to commonly used speeds for various stages of grinding and polishing, thus improving daily operation more efficiently and consistently across different samples.

While these presets offer convenience, each can also be adjusted within the full range of 100 to 1400 r/min. This allows users to customize the speed settings to suit specific materials or preparation steps. The ability to fine-tune even the preset speeds adds flexibility and control so that the machine can handle a wide variety of metallographic tasks with precision.

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