In adapter mounting, a tapered bore bearing is mounted onto a cylindrical shaft through the use of a tapered adapter sleeve. Many typical split pillow block applications use an adapter sleeve to mount. The shaft seat does not need to be machined to the precision tolerances for cylindrical mounting and heating is not required. Driving the bearing up the taper achieves the correct mating of the components and reduces the bearing clearance to the level dictated by the application. No additional location on the shaft is required. Total costs associated with tapered mounting are typically lower than cylindrical mounting.
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