THK LRA / LRA-Z Series LM Roller

The THK LRA Series LM Roller is, like model LR, designed to fit into a mounting groove, but in a compact form that mounts using fixture model SM or SE with bolts. Contoured rollers circulate around a precision-ground raceway base with a center guide that corrects skewing for smooth, accurate motion.

The LRA-Z variant is a lighter version with a resin retainer, a seal-installation groove for high contamination protection, and capability for high-speed travel up to 1 m/s. Basic dynamic load rating ranges from 21.6 to 285 kN and basic static load rating from 39.9 to 577 kN. Suited to precision machine tool guides, press equipment, and heavy-load transfer applications.