Surely a live centre?
you should be able to change the bearings for ones that might last a bit longer
It's going back - big enough bearing housing - perhaps I just had a bad one?
But it felt fine turning over by hand - a tiny load and it's knackered!
You are better off buying second hand European or American tools. Even used they are better than the chinesium muck straight out of the box. I persevered for years with chinese boring heads, gave up on them and spent a wedge on an American made Criterion. Night and day, no comparrison.
I agree. But I couldn't find a long and pointy used British one....
Here are a couple I have done,You have a lathe, turn one down to what you require or if you require longer make one.
Having never done this, I'm curious about your set up ? Did you have to make up a special dog for the narrow shoulder of the live centre to immobilise it in order to rework it ?Here are a couple I have done,
turned one of these
View attachment 247929
Into this.
View attachment 247931
These two were once identical.
View attachment 247930
Removed the shaft from the bearings and housing then used soft jaws on the lathe, 4 jaw would be OK as well but means you have to clock it in. I am lazy so tend to bore out soft jawsHaving never done this, I'm curious about your set up ? Did you have to make up a special dog for the narrow shoulder of the live centre to immobilise it in order to rework it ?
Ok thanks. I was looking at the first photo, and could not see any way to disassemble it; but I now see the ones you modified do have screws.Removed the shaft from the bearings and housing then used soft jaws on the lathe, 4 jaw would be OK as well but means you have to clock it in. I am lazy so tend to bore out soft jaws
Nice price as well though .lolGeneric Chinese live centres are junk, the Kennedy one is nice and the different tip styles are useful.
https://www.cromwell.co.uk/shop/cutting-tools/revolving-centres/standard-duty-interchangeable-revolving-centre-sets/f/3988?query=kennedy revolving centres.
Nice price as well though .lol