Item Type: Flange Linear Motion Bearing_x000D_ Material: Bearing steel_x000D_ Optional Style: LMH12UU, LMH13UU, LMH16UU, LMH20UU _x000D_ LMH12UU:_x000D_ Inner Diameter: Approx. 12mm / 0.5in_x000D_ Diameter: Approx. 20mm / 0.8in_x000D_ Thickness: Approx. 30mm / 1.2in_x000D_ LMH13UU:_x000D_ Inner Diameter: Approx. 13mm / 0.5in_x000D_ Diameter: Approx. 23mm / 0.9in_x000D_ Thickness: Approx. 32mm / 1.3in_x000D_ LMH16UU:_x000D_ Inner Diameter: Approx. 16mm / 0.6in_x000D_ Diameter: Approx. 28mm / 1.1in_x000D_ Thickness: Approx. 37mm / 1.5in_x000D_ LMH20UU :_x000D_ Inner Diameter: Approx. 20mm / 0.8in_x000D_ Diameter: Approx. 32mm / 1.3in_x000D_ Thickness: Approx. 42mm / 1.7in_x000D_ Introduction to Linear Bearings: _x000D_ It is a linear motion system produced at low cost. It is used for infinite stroke and cylindrical shaft. Because the load ball is in point contact with the shaft, the use load is small. The steel ball rotates with very little frictional resistance, so that it can obtain high-accuracy and smooth movement_x000D_ Linear Bearing Features: _x000D_ Linear bearings are used in conjunction with hardened linear drive shafts. A system for infinite linear motion. The load ball and the hardened drive shaft are in point contact and allow a small load._x000D_ Application: _x000D_ Widely used in electronic machinery, power tools, sports equipment, packaging machinery, food machinery, printing machinery, woodworking machinery, crystal machinery, textile machinery, light industry machinery, mining machinery, engraving machines and automation equipment, numerical control equipment, etc._x000D_ Uses: _x000D_ Linear bearings are widely used in accuracy equipment such as electronic equipment, tensile testing machines and digital three-dimensional coordinate measuring equipment, as well as industrial machinery such as the sliding parts of machine tools, punches, tool grinders, automatic gas cutting machines, printers, card sorters, and food packaging machines