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Old 17th July 2013, 03:13 AM   #1
mlise is offline mlise  United States
diyAudio Member
Join Date: Mar 2007
Location: Silicon Valley
Blog Entries: 5
Default $3.00 Phono Bearing

A first experimental phono spindle bearing. I'm totally pleased with the results. This is just junk from the hardware store, but fine for prototyping. A final version would be tool steel, hardened after the divot is banged in, and a silicon nitride ball.

Click the image to open in full size.

Click the image to open in full size.

The divot is from a 5/32" ball bearing, and the pivot is a 1/8" ball glued in the end of a set screw. I'll put a ring of polyethylene or lignum vitae or something for the bearing at the bottom. With a gentle nudge it spins for several minutes. You can see the breeze blowing it around in the video.

$3.00 Phono Bearing Experiment - YouTube
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