I noticed a few weeks ago my 'goto' makita angle grinder had a lot of play in the front bearing. Not happy, it's barely over 30 years old.
I finally pulled it apart and this is what I found..
Pretty sure it is supposed to be a dual seal, absolutely no sign of one of them, and the ball cage is completely destroyed. The races seem to have grooves both sides for the seal.
I think it is a 6201 2rs. No marking on the bearing, a suspicious mind says it was ground off to force buying expensive spares...
The remaining seal says ntn Japan and what looks like 82OILS.
(I measured the shaft @11.94, the outer @ 31.94). I checked the brushes, looks like a bit of life left in them still.
I did get a quote when I first realised the wear, around $15 as a spare part, $6 as a 6201. [emoji16]
https://uploads.tapatalk-cdn.com/201...e608474fae.jpg
-russ