Open linear bearing (OPUU / LME series) — LM10 / LM12 / LM13 / LM16 / LM20 / LM25 / LM30 / LM35 / LM40 / LM50 / LM60 / LM80 OPUU, LME16 / LME20 OPUU Package options Available in packs of 1, 2, or 4 pieces. Key benefits — why you need this product Dramatically lower friction: coefficient of friction is one-fiftieth that of traditional sliding guidance, reducing drag and heat during motion. Longer service life: made from high-quality steel with fine workmanship for extended wear resistance under repeated use. Precise, fast linear movement: low friction resistance and high precision deliver smooth, responsive motion for linear guidance applications. Broad size compatibility: available in standard LM sizes to match common linear shafts and assemblies. Primary features Models/sizes: LM10, LM12, LM13, LM16, LM20, LM25, LM30, LM35, LM40, LM50, LM60, LM80 (OPUU); LME16, LME20 (OPUU). Material: high-quality steel construction for durability and stable performance. Performance: low friction coefficient (1/50 of traditional sliding guidance), low resistance, high precision, fast linear motion suitable for continuous or intermittent use. Packaging: choose 1, 2, or 4 pieces depending on your project needs. Typical applications (practical use scenarios) 3D printing and hobby CNC machines: improves carriage smoothness and print/ cut consistency by reducing vibration and stick-slip. Industrial automation and robotic linear slides: supports precise positioning and repeatable motion in pick-and-place, assembly, or inspection systems. Camera sliders, linear stages, and measurement equipment: enables smooth, quiet travel and fine control for imaging or metrology tasks. What this product solves Reduces energy loss and component wear caused by high friction. Improves positional accuracy and repeatability for linear motion systems. Extends maintenance intervals and component lifetime in demanding environments. Ordering notes Confirm required LM size before ordering to ensure compatibility with your linear shafts and housings. Select the appropriate pack quantity (1/2/4 pcs) for replacements or multi-axis builds.