Thread: AL 320G Lead screw DOR gears

Rob, the amount of mucking about trying to get oil galleries going everywhere is a major task. I think your right, and the easies way out is going to be to drill a couple of holes in the casting so I can squirt copious quantities of oil onto the various pionts of interest.
Cheers
George

Originally Posted by georgedgerton

Rob, the amount of mucking about trying to get oil galleries going everywhere is a major task. I think your right, and the easies way out is going to be to drill a couple of holes in the casting so I can squirt copious quantities of oil onto the various pionts of interest.
Cheers
George

Yes, I think you're right George.

Same thing with the spindle in the carriage which drives the gear on the rack in my CQ9325. There's no way you can oil it in normal use, but it runs in a hardened steel bush, turns slowly, doesn't have a big load on it, and seems to be showing no signs of wear.

Once a year oiling would probably be all it really requires (I did this when I had the carriage off).

There's probably plenty of lathes in the same boat with this particular bush.

Rob

As a final word on this problem, I found out from a person who has a lot to do with these particular machines (and was well aware about the oil hole problem) said the easiest way to make it usable is to stip the gears out (which I have) put Moly grease in the bushes and thrust race, but not the top shaft / bearings as they do get oil from the two end oil caps (and I found that is OK) put it back and be resigned to have to re-grease it once in a while. Because of the slow speed he claims that will surfice.

So stay tuned, because I'm about to start on the saddle and apron, wondered why the leadscrew didn't rotate freely and have discovered the driven end of the lead screw is out of alignment with gearbox drive, which also happens to be running off-centre.

I know what most folk on this forum would be saying and I would tend to agree.

George