12pcs LM12UU Linear Ball Bearings, 12mm Bore Dia, 21mm OD,30mm Length, Linear Motion Bearing for CNC Machine

Advantage:
Made of bearing steel, which has good abrasion resistance, high precision, and good strength, plated surface treatment can operate under high-temperature conditions . The bearings has low noise, smooth movement, low friction, high rigidity, long service life. Ball bearings with two rubber dust sealed to prevent ingress of dirt and water. Widely used in linear motion, -axis and 3-axis tables, linear tables, 3D printers, CNC machines, electronic equipment, food machinery, packaging machinery