| 摘要 |
PROBLEM TO BE SOLVED: To provide a preload setting method for a double row tapered roller bearing capable of suppressing preload dispersion after incorporation. SOLUTION: In the preload setting method for the double row tapered roller bearing, inner diameters d1 and d2 of inner rings 2 and 3 and an outer diameter d3 of an outer ring 5 of the double row tapered roller bearing 10 are measured in a measuring process. In a calculating process, a decrease on of an axial internal clearance of the bearing 10 by incorporation is calculated from the inner diameters d1 and d2 and the outer diameter d3 of the bearing 10 measured in the measuring process, a tolerance median of an outer diameter of a rotary shaft 1 to which the bearing is incorporated, and a tolerance median of an inner diameter of a differential carrier 4. A thickness T of a shim 13 is set on the basis of the calculated decrease of the axial internal clearance so that a preload applied when the double row tapered roller bearing 10 is incorporated with the rotary shaft 1 and the differential carrier 4 is a predetermined value.
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