Self-aligning roller bearings definition: self-aligning roller bearings are in two ways of inner circle and rolling roll for the outer surface, between the drum of the roller bearings. Self-aligning roller bearings introduction: self-aligning roller bearings are two major diameter roller, under a load, also can withstand any direction of the axial load. Have high radial load capacity, especially suitable for heavy work load or vibration, but unable to bear pure axial load. Tilting-pad bearing formed is spherical shape, its heart performance is good, can compensate the coaxial tolerance of error. Spherical roller bearing types: self-aligning roller bearings, cylindrical into the hole, conical hole. Tapered bores respectively the taper of code for 12 K spherical roller bearing type or 153000 (1), and the type of 113,000 rear code-named K30 of spherical roller bearing. These bearings with conical axis in a match, inner ring along the axial movement of the bearing can adjust radial clearance. Self-aligning roller bearings rear code: will the code for K, K30 taper hole spherical roller bearing, installed in the set of matched, become the code for K + H and K30 + H bearing. The bearing can be installed in the shaft shoulder axis, applicable to always need to install and remove the bearing. In order to improve the lubrication performance, in the inner ring bearings are bearing car and drill has uniform distribution of oil hole, after three W33 named therein. Different types of self-aligning roller bearings, example: NTN LH series of automatic self-aligning roller bearings automatic self-aligning bearing applications gradually increase, especially in high temperature environment of long life bearing. For different applications, NTN engineer developed STJ2 type of steel, can be in a wide range of temperatures to 250 ° c, the room temperature range prolong service life. This series of steel is LH automatic self-aligning roller bearings standard material. This bearing features below (SUJ2 contrast with large temperature range, the long life bearing under room temperature is 3.5 times that of the ordinary life, under high temperature (250 °) is common life of 30 times, prevent surface damage, seven times, and the ability to prevent spalling 1.4 times of bruises, 2.5 times of high temperature condition, the dimension stability, almost no in 250 ° c, strengthen the size of the fatigue fracture changes in high intensity, and cooperate with the situation, doubled up to the weary life. Add up to 2 times the fatigue strength, simplified parts storage management procedure, the room temperature to 250 can use a single standard bearing type, automatic self-aligning roller bearings will gradually into "LH series".