The LWL Series offered by AST Bearings is a miniature type linear motion rolling guide, incorporating two rows of steel balls arranged in four-point contact with the raceways. Owning to its simple design, it provides stable accuracy and rigidity even in operations under fluctuating loads with changing direction and magnitude or complex loads. The standard products are made of stainless steel, and a wide range of variations in shapes and sizes are available for selection suitable for each application. The LWL Series is widely used in such fields as medical equipment, semiconductor manufacturing equipment, and liquid crystal related equipment, where its excellent performance has been proved.

The smallest size models, LWL 2 (track rail width: 2 mm) and LWL-F 4 (wide rail type) have been recently added to the series. These models will contribute to further reduction in size and weight and improvement in performance of equipment.

The simple two-row, four-point contact design minimizes the number of potential errors in manufacturing and measurement, so the highest level of dimensional accuracy between rows can be achieved. Interchangeable specification products of high-interchangeability level can be manufactured benefiting from this feature by rigorous control of the dimensional accuracy of individual slide units and track rails.