The tapered roller bearing belongs to the separated bearing. The inner and outer rings of the bearing have tapered raceways. This type of bearing is divided into single-row, double-row and four-row tapered roller bearings according to the number of rows of rollers installed. Single-row tapered roller bearings can withstand both radial and single-direction axial loads. When bearing radial load, will produce an axial component, so need another bearing can withstand the opposite direction of the axial force to balance.
Single-row tapered roller bearings have an outer ring, the inner ring and a group of tapered rollers by the basket cage contained in an inner ring assembly. The outer ring can be separated from the inner ring assembly according to the ISO tapered roller bearing outline dimension standard, any standard type tapered roller bearing outer ring or inner ring assembly shall be internationally interchangeable with the same type of outer ring or inner ring assembly. The outer ring of the same type must comply with ISO492(GB307) except the outer dimension and tolerance. The cone angle of the inner ring assembly and the cone diameter of the assembly must also comply with the relevant regulations of interchange. Usually, the taper angle of outer ring raceway of single row tapered roller bearing is between 10 ° and 19 ° , which can bear the combined action of axial load and radial load. The greater the cone angle, the greater the capacity of bearing axial load. The bearing with big taper angle, which is named after B and whose taper angle is between 25 ° and 29 ° , can bear bigger axial load. In addition, single-row tapered roller bearings can be installed in the process of adjusting the size of the clearance. The outer ring (or inner ring) of a double row tapered roller bearing is an integral part. Two inner ring (or outer ring) small face close to the middle of the ring, clearance is by the thickness of the ring to adjust the thickness of the ring can also be used to adjust the pre-interference of double-row tapered roller bearings. Four-row tapered roller bearings, this bearing performance and double-row tapered roller bearings are basically the same, but than double-row tapered roller bearings to bear a greater radial load, lower limit speed, mainly used in heavy machinery. Multi-sealed double-row and four-row tapered roller bearings, KBTBK provides long life, multi-sealed double-row and four-row tapered roller bearings. The new personalized design of bearings, change the traditional design method of sealed bearings, using a combination of seal and dust-proof new seal structure, improve the seal effect, improve the seal performance. Compared with the open structure bearing, the service life of multi-sealed double-row and four-row tapered roller bearing is increased by 20% ~ 40% , and the lubricant consumption is reduced by 80% .
