Tapered roller bearings and needle roller bearing structure and its fundamental difference

  Tapered roller wheel bearing can be separated from the inner ring with roller and cage components together and the outer ring can be installed separately. Roller and raceway contact at the contact line can reduce the stress concentration. Tapered roller bearings can withstand high radial and axial load. The tapered roller bearings can only pass one-way axial load, so as to pass the opposite direction of the axial load on the need install another with symmetrical tapered roller bearings. The needle bearing (needle bearing) is a cylindrical roller with roller bearings, relative to its diameter, roller both thin and long. This is called needle roller. Despite having a smaller cross-section, has a higher load bearing capacity, therefore, especially suitable for the radial space-constrained applications.
Different structures, different types, different direction of the force to withstand, at different speeds, different loads, different materials, the application of different occasions etc.
Fundamental difference: tapered roller bearings rolling body is tapered roller; needle roller bearings needle roller is rolling;
These fundamental difference determines the structure of tapered roller bearings Needle roller bearings relative to a large, tapered roller in addition to radial force than can withstand axial force, and needle roller bearings can withstand radial forces;
Single row tapered roller bearings are double row and multi-row, were applied to different environments and situations;
Tapered roller bearings Needle roller bearings with respect to higher operating speed;
Tapered roller bearings are generally of high quality bearing steel and special steel; rather thin needle roller bearing is used in steel stamping;
In short, these two types of bearings are not the same type of bearing, there are too many different, have some really far-fetched comparison
Needle roller bearings are long thin needle roller and cage. Cylindrical roller bearings. Is composed of cylindrical and rollers. Column than the needle thick, also known as coarse needle.