I've never owned an SP15 but my first thought is that the bearing has worn out. You might put a couple of drop's of oil in the well to see if it makes any difference. FWIW.
9 responses Add your response
I own an SP-15, and the platter sits on a conical sleeve below the spindle, and the hole in the platter has a corresponding conical bore. It's fairly easy, with age and/or abuse, to get the platter cocked slightly, which will cause it to rub the case. Remove the platter by taking off the mat, grabbing the platter through the holes and pulling straight up. You can rock it a minute amount side to side to help loosen it, but be careful because too much side to side will damage the bearing. If it doesn't come off fairly easily (pretty common) then spray the joint between the platter and sleeve with something like WD-40 and let it sit overnight, then try it again. With some patience you should be able to get it off.
After the platter's been removed, clean up the sleeve and platter bore and reinstall the platter with about a quarter turn in relation to its old position relative to the spindle. This is frequently enough to true up the platter and make the table usable again.
While you have the platter off, clean all the dust out of the vents and holes in the case, and oil the bearing using something like Mobil One.
I own 2 of these things. I doubt - with all due respect - that the rubbing sound you hear is either the bearing or the spindle but almost certainly the brake. There is a simple adjustment to be made. Download the manual from vinylengine and I think it is one of the first things mentioned.
You can even adjust it so that the brake is never in contact with the platter. If you are not using this for radio, I doubt you will need the brake.
I just got an SP-15 which was also suffering from the rubbing sound, but it seems like it's because the conical sleeve/bore are worn causing the platter to sit too low on the spindle.
The rubbing sound is being caused by the underside of the platter rubbing on the plastic cover that sits over the mechanical brake. Removing this cover stops the rubbing sound.