THK MST Series Miniature LM Stroke

The THK MST Series Miniature LM Stroke consists of an ST shaft, ball cage, and nut that can be freely combined to suit the application, with a small sectional shape, minimal clearance, and extremely light, smooth motion. It uses 1 mm diameter balls in point contact with the raceways for minimal rolling loss and low friction, held in a copper alloy ball cage with precision steel balls (sphericity difference of 0.0003 mm) compliant with JIS B 1501. The heat-treated, ground ST shaft and densely arranged, non-overlapping ball rows give it long-term durability without wear. Permissible load ranges from 68.6 to 216 N. Ideal for small precision equipment such as optical measuring instrument spindles, pen plotters, OA equipment, computer terminals, digital length measuring machines, and solenoid valves.