Self-sealing high-bearing-capacity four-row cylindrical roller bearing

The utility model discloses a self-sealing high-bearing four-row cylindrical roller bearing, and relates to the technical field of bearings. In order to solve the problems that an outer assembly and an inner ring of an existing four-row cylindrical roller bearing are packaged separately, a sealing piece is mounted on the outer assembly, and a sealing ring is easy to deform during split packaging, so that an oil leakage phenomenon occurs during use, and the sealing performance is relatively poor; and when grease is supplemented to the bearing, a machine needs to be shut down and disassembled to supplement the grease, so that the working efficiency is relatively low. The sealing effect is actually achieved through matching of the outer ring flange, the outer ring and the pin shaft, the gap is controlled to be 0.3 mm, the non-contact type sealing effect is achieved, the roughness is controlled to be not larger than 0.63 micrometer, the bearing is prevented from being affected by friction in the operation process