THK Co., Ltd. LM30UU Linear Ball Bearing

The THK LM30UU Linear Ball Bearing is a precision closed-type linear bushing that provides smooth, low-friction motion on a 30 mm hardened shaft, using recirculating steel balls for high load capacity and long service life, with an outer diameter of 45 mm and an overall length of 64 mm. Its LM Series closed-type design, UU double-end seals, hardened bearing steel construction, and compatibility with grease or oil lubrication enable reliable performance in CNC machines, industrial automation, packaging equipment, semiconductor systems, medical devices, and material handling applications, and it is commonly used by maintenance teams, OEM machine builders, and system integrators for repairs, retrofits, and replacement of worn bushings. Key specs include nominal shaft diameter 30 mm, outer diameter 45 mm, overall length 64 mm, basic dynamic load rating 2.16 kN, basic static load rating 4.02 kN, operating temperature -15 °C to 80 °C, lubrication options of grease or oil, and standard accuracy grades of High Accuracy (No Symbol) or Precision (P).