onetreeforge Posted January 10, 2013 Share Posted January 10, 2013 Hello I am not very good at using lathes, I use to use the one at my old work alot, it had the jaws numbered to make it easy when changing from the inners to the outer jaws. anyway I got given a lathe and there are no numbers on the 3 jaw chuck, I had to remove them as they got jamed with chips and it took me like an hour to get them back in and now they feel kind of stiff. what have I done wrong? I did make a note of witch one came out first but I must have mixed them up or something, they still center ok Quote Link to comment Share on other sites More sharing options...
pjh66 Posted January 10, 2013 Share Posted January 10, 2013 Do the jaws close up even in centre? If so then they are in the right place. It could be stiff because of contamination in the scroll or burring in the slides of the the jaws. Quote Link to comment Share on other sites More sharing options...
dkunkler Posted January 10, 2013 Share Posted January 10, 2013 Disassemble completely and clean. Test that jaws slide freely without scroll in. Clean up any burrs or dings causing them to hang up. Quote Link to comment Share on other sites More sharing options...
onetreeforge Posted January 10, 2013 Author Share Posted January 10, 2013 they center ok, I will give it a good clean out, I mainly use the lathe for drilling holes in bars so the chips and dust, cutting oil must have built up in there. with the unmarked outside jaws how do I know where each one goes? they have no markings Quote Link to comment Share on other sites More sharing options...
ciladog Posted January 10, 2013 Share Posted January 10, 2013 If you turn the jaws over and look at the teeth that are cut to match with the scroll you will see that there is a progression from one jaw to the next. Quote Link to comment Share on other sites More sharing options...
dkunkler Posted January 10, 2013 Share Posted January 10, 2013 On most scroll chucks it doesn't matter which slots the jaws are in as long as they are in the proper sequence. If they're closing evenly they're in sequence. You have 3 combinations of slots they'll go in, check for best sliding fit with scroll out. Quote Link to comment Share on other sites More sharing options...
onetreeforge Posted January 11, 2013 Author Share Posted January 11, 2013 Cool thank you people, the old Myford lives to fight another day Quote Link to comment Share on other sites More sharing options...
pjh66 Posted January 11, 2013 Share Posted January 11, 2013 When you work out that they are in the right slot. I would suggest marking them & the chuck with number stamp. The first jaw to come out when undoing them is normally No 3 & don't forget to mark up your outside jaws also. It will make it easier in the future. Quote Link to comment Share on other sites More sharing options...
onetreeforge Posted January 11, 2013 Author Share Posted January 11, 2013 When you work out that they are in the right slot. I would suggest marking them & the chuck with number stamp. The first jaw to come out when undoing them is normally No 3 & don't forget to mark up your outside jaws also. It will make it easier in the future. I tried stamping them but its hard steel, need to engrave them Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.