Four-row cylindrical roller bearing

The utility model provides a four-row cylindrical roller bearing, relates to the technical field of roller bearings, and aims to solve the problems that the conventional four-row cylindrical roller bearing is mostly in an integrated state during use, so that the conventional four-row cylindrical roller bearing needs to be integrally disassembled during disassembly and maintenance, the mounting position of the conventional four-row cylindrical roller bearing is in an idle state, and the normal use of equipment is influenced. Comprising a working part; the fixing part is arranged outside the working part; and the locking part is arranged outside the fixing part. A cylindrical groove is formed in an outer supporting ring so that the outer supporting ring can be in butt joint with a butt joint rod conveniently, then the outer supporting ring is matched with a fixing ring to conduct clamping treatment on the whole working part, the working part can be kept stable conveniently, inserting grooves are formed in the f