1587749 Bearing Spl-Self Fits Caterpillar ModelsOne New Aftermarket Replacement Self Aligning Spherical Bearing for Caterpillar (Cat) Articulated Dump Trucks This aftermarket replacement spherical bearing (part number 1587749 158 7749) is a self aligning bearing used in the rear and center suspension frame of Caterpillar articulated dump trucks. Spherical bearings in this application must accommodate angular misalignment under heavy load cycles making proper fitment critical for suspension
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