THK SSR15 Linear Ball Bearing Block Carriage Slides

The THK SSR15 Linear Ball Bearing Block Carriage Slides on a 400 mm guide rail deliver smooth, high-accuracy linear motion with low friction and low noise. This complete assembly pairs two SSR15 caged-ball carriage blocks on a 400 mm precision-ground LM guide rail (rail width 15 mm) using caged-ball recirculating bearings for high rigidity and long service life. The system uses grease lubrication and is grease-nipple compatible, with a self-adjusting ball circulation design that supports high-speed motion while preserving positioning accuracy. Commonly installed in CNC machines, semiconductor equipment, packaging machinery, industrial robots, inspection systems, and automated production equipment, it is used by maintenance teams, OEM machine builders, and system integrators for new machine construction, repairs, retrofits, and replacement of worn linear guides. Corrosion-resistant stainless steel versions are available, and the assembly supports single or parallel rail configurations; common replacements include THK SSR15XWUU, and the SR15/SHS15 series.