Is plain bearing just linear bearing or linear bearing is plain bearing?
Plain bearings work smoothly, reliably and without noise. We generally use rolling bearings are rolling, and sliding bearings that the journal and bearing directly friction, so it is sliding friction.Linear bearing is a linear motion system, used for linear stroke and cylindrical shaft.
Because the bearing ball and bearing point contact ball with minimum friction rolling, so linear bearing with small friction, and relatively stable, does not change with bearing speed, can obtain a smooth linear motion with high sensitivity and high precision. Linear bearing consumption also has its limitations, the most important is the bearing impact load capacity is poor, and the bearing capacity is also poor, secondly, linear bearings in high-speed movement, vibration and noise.
Journal bearings are a large class of bearings. General bearings can be divided into rolling bearings and sliding bearings. Linear bearings are one of the rolling bearings, and the two are not the same concept at all.Bearing (sliding), in brief, is the shaft (the shaft is supported by the bearing as a part of the Journal) and the Bush (with the shaft neck matching parts known as the Bush), sliding friction in the work of the bearings.
