Youtube vid channel: "its always sunny in the shop". He has a 60 or 61, pretty lathe and he's done a bunch of repairs and maintenance. In one of his vids, I'd swear he was trying to determine as well, but its been a few years and I forget. Searching his vids I was pretty sure it was an internal repair of clutch assembly or a shifter fork with broke shoe.I looked up all the pictures I could find showing the headstock and none look like either of the above pictures. The clutch top tray isn't there and there are only three oil lines coming out of the side of the manifold, none going to the area our pictures show which is the fourth fitting on our machines. My experience with old machine literature is that pictures are seldom updated but the change in the clutch casting to add the reservoir must have occurred prior to the model 60 along with the addition of the oil line that seems out of place. Dave
EDIT Harry Blooms new toy thread shows his oil line being totally screwed up and needing to be redirected to lubricate the brake fingers but doesn't show where it should go.
, but I'm not sure there is an elegant solution for the bushing in the tailstock...
I don't have a good scientific answer for you. But in the same sense, I think of bearings in electric motors. Some are sealed. Some have a grease fitting that many know and see, and many of those have a NOT easily scene plug 180 degrees opposite the grease fitting.My question is whether sealed bearings would be proper as a replacement. I don't usually consider sealed if the machine was set up for manual greasing and realize that sealed bearings probably won't last more than 20-25 years - which is longer than my life expectancy. I need to tear into my clutch and want to have the bearings on hand and leaning towards replacing as original but wondering if there is a benefit to one type over the other.
I'm not a bearing expert, but everything I've read is that as long as you don't mind swapping out bearings when they hit end of life there is nothing wrong with swapping in a sealed for an open or shielded (assuming they are the same clearances and specs of course). The only real limitation I've been able to pinpoint is in cases where temperature and high speed are critical for some reason.This is a grease question but maybe someone here has an opinion. The Monarch clutch uses grease on the two 73L18 bearings in the clutch. The bearings are more commonly named as 6018. The original set up are two bearings with one shield and spacers between. There is a grease zerk on the headstock casting that feeds the area between the two bearings and allows excess grease to exit through a similar hole in the headstock. Harry in " Another new toy " explained the issues. It seems common after 50 years that the holes get clogged and the ability to lubricate doesn't work.
My question is whether sealed bearings would be proper as a replacement. I don't usually consider sealed if the machine was set up for manual greasing and realize that sealed bearings probably won't last more than 20-25 years - which is longer than my life expectancy. I need to tear into my clutch and want to have the bearings on hand and leaning towards replacing as original but wondering if there is a benefit to one type over the other.