Mounting bearings with a tapered bore | SKF | SKF
The annular piston abuts the inner ring of the bearing (fig. 1 and fig. 2) or a stop on the shaft, which can be either a nut on a shaft thread or a plate attached to the end of the shaft. Pumping oil into the hydraulic nut displaces the piston axially with the force needed to drive the inner ring up the taper for accurate and safe mounting.
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