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Most turntable thrust bearings

are of very simple construction...They have a ball or ball shaped shaft end that rotates on a thrust plate. The contact area will be polished but anything mechanical will have irregularities. These will displace the whole spindle platter assembly and introduce noise. The rotating element has to ride up on the bumps between the two surfaces and then drop down into the valleys. That will definitely cause some displacement of the stylus in the vertical direction. Any wobble of the bearing will create stylus displacement mostly horizontally. Either can be measured as a noise signal on the cartridge. Bearing noise is a fact.

dee
;-D


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Edits: 10/23/16
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