Linear bearings are a kind of linear motion system, used for linear stroke and cylindrical shaft. Because the bearing ball is in point contact with the bearing shell, the steel ball rolls with minimal frictional resistance, so the linear bearing has low friction, is relatively stable, does not change with the speed of the bearing, and can obtain a stable linear motion with high sensitivity and high accuracy. Consumption of linear bearings also has its limitations. The most important thing is that the bearing’s impact load capacity is poor, and the bearing capacity is also poor. Secondly, linear bearings have greater vibration and noise at high speeds. The selection of the linear bearings Kuaiyiyou automation is included. Linear bearings are widely used in sliding parts of precision machinery, textile machinery, food packaging machinery, printing machinery and other industrial machinery.
(1) Standard type, gap adjustment type linear bearing, open type linear bearing, extended linear bearing, general purpose linear bearing (2) Flanged linear bearings can be divided into: round flange type, method blue type, oval flange type, guide round flange type, guide method blue type, guide oval flange type, extended round flange type.
Divided by specifications: Divided into two major series namely LM and LME series. Its code LM series is used in Asia, Southeast Asian countries, Japan, Korea, China and so on. Taking the metric size as the standard, the tolerance of the outer diameter of the linear axis used is generally h7. The LME series is mostly used in Europe, the United States, Germany, Italy and other regions. The inch size is used as the standard, and the metric size is also available. The tolerance of the outer diameter of the linear axis is generally g6. The structural features of the two series, except for different sizes and different aperture tolerances, their structures are roughly the same.
By shape: 1: Straight type (shaped like a cylinder, generally installed with a snap spring, used for small installations) 2: flange type (the end or middle has a mounting flange, which can be installed with screws, flanges are generally divided into three types: round, square and trimmed) 3: Open type (shape like straight tube, with axial slits on the surface, used for clearance adjustment, divided into two types: large opening and small opening)
By performance: 1: Ordinary type (for general performance needs) 2: Super type (where long life and large load performance are required)
Linear bearings are used in conjunction with hardened linear drive shafts. A system for infinite linear motion. Because the load ball and the hardened drive shaft are in point contact, the allowable load is small, but when moving in a straight line, the friction resistance is minimal, the accuracy is high, and the movement is fast.
Linear bearings are more and more widely used in precision equipment such as electronic equipment, food machinery, packaging machinery, medical machinery, printing machinery, textile machinery, machinery, instruments, robots, machine tools, CNC machine tools, automobiles, and digital three-dimensional coordinate measuring equipment. Or in the special machinery industry.