The invention belongs to the technical field of bearing equipment, and particularly relates to a double-row
tapered roller bearing clearance adjusting method, which comprises the following steps of: 1, measuring the sinkage of a roller when the upper row of tapered rollers of a measured bearing are self-locked, and recording the sinkage as
delta H; 2, enabling a measurement meter to be in contact with the upper end surface of the inner ring of the middle upper part of the measured bearing, and adjusting the measurement meter to be +
delta H; 3, placing the standard space ring between the upper inner ring and the lower inner ring of the tested bearing; 4, rotating the upper inner ring, and recording the reading of the measuring meter as X, wherein X is the actually measured axial clearance of the measured bearing; 5, calculating the actual space ring dimensional tolerance through the formula
delta C1C1 = delta C0C0-(X-Ga), wherein the delta C1C1 is the actual space ring dimensional tolerance, the delta C0C0 is the theoretical tolerance of the standard space ring, and the Ga is the standard axial clearance; and 6,
machining the space ring product according to the actual dimensional tolerance of the space ring to be assembled into the corresponding bearing. Only sinkage is measured, the axial clearance can be accurately adjusted, time and labor are saved, and efficiency is high.