PRECISION MOTION INDUSTRIES, INC.

PMI began with precision-ground and precision-rolled ball screws. It later expanded into linear guideways, screw splines, ball splines, actuators and crossed-roller bearings. This provides customers with components ranging from individual transmission parts to integrated precision-motion modules.

Ball screws convert rotary motion into efficient linear motion. They are used in machine-tool feed axes, semiconductor equipment, positioning platforms and automated machinery. PMI offers high-lead, low-noise, high-load, miniature and automation-specific designs. Hollow-shaft and nut-cooling options help control thermal deformation during high-speed operation.

Its linear-guideway range includes ball-type, roller-type, low-profile, wide-type and miniature series. These configurations address different requirements for speed, rigidity, load capacity, noise and installation space.

Precision screw splines combine ball-screw and ball-spline grooves on one shaft. The design supports rotary, linear and helical motion. Applications include robots, electronics assembly systems, semiconductor handling equipment and automated mechanisms requiring combined movement.

PMI actuators integrate linear guideways and ball screws into compact modules. This reduces the time equipment builders spend on component selection, mechanical design and assembly. Crossed-roller bearings carry radial, axial and moment loads within a compact structure, making them suitable for robot joints, precision rotary tables and semiconductor equipment.

PMI’s main value is its complete range of precision linear- and rotary-motion components. Equipment manufacturers can select products according to load, speed, accuracy, travel and installation space. This reduces multi-supplier integration work and shortens machine-development time.