May be i was just unlucky , i bought a 125mm 4jaw self centering chuck , over 2mm of run out between the outer surface of the chuck & center of jaws . Im going to try grinding the jaws 🤔
have you tried mounting the chuck and put a gauge pin in the chuck and clock that to see what the run out is as this is what matters ? ( not teaching you to suck eggs, its just a suggestion )
Hi , yes i have set the jaws to a gauge pin & gauge , got it within 5 thou , as you say thats the main thing , to do that i had to open up the holes in the face plate by 3 mm to allow adjustment , its the outer perimeter of the chuck that now runs out causing vibration. I did think about machining the outside of chuck & its centre hole but im not sure it would solve the problem . I should have researched them more , a bit misleading describing them as 'LATHE ' chucks .thanks for your reply
That is ideal for your dividing head, it will not get as much use as on the Lathe so will be a really good chuck, the plastic does not really cause a problem in this case, and at least you have both sets of jaws, so many that come fitted to the dividing head have just the one set, the other set being left on the shelf in the stores! I wonder if the chuck would be balanced enough to fit on to a Lathe? Chris B.
It does say it's suitable for general lathes so I'd say it'd be fine for most hobby lathes but for higher rpm lathes probably not so much, but for the money it was pretty good.
I did consider a Bison chuck but the Pratt Burnerd came with a matched D1 camlock backplate and were on sale so by the time you'd added the price of a universal backplate for the Bison there wasn't a lot of difference .
That seems OK for the price. How accurate is the dividing head? The state of that mill! Jenkins needs a kick up the Isle of Man. Just a general comment, but you seem to be keeping bad company lately. First Iver Beanpaidalot and now Iver Broomstick, have they some sort of hold over you? Thanks for the video and the review of the chuck.
My pleasure Colin, I'll stick a clock on the dividing head and let you know, it should be good as its a quality piece of kit ....I'll wait until the " celebrities " have left the building...
Well... if a guy doesn't have a drill press and a file, I guess that thing would do in a pinch. I wasn't expecting witches... I was expecting the Spanish Inquisition. Cheers
@@TweedsGarage but have you actually tested it on heavy work ? Have you spun it up and tried to cut anything on it. I asked because there are other people who have used it and said it was all right
@@TechTimeElectronics no its purely used for work holding on the mill, I'm sure its fine as i said on the video for small lathes but if you want to take heavy cuts on a lathe your better of buying a quality chuck, at the end of the day you get what you pay for.
I've checked it for you, on a 10mm gauge pin it has a run out of between 1 to 3 thou on multiple mounts and as for the speed , its not marked so if you're intending on using one on a lathe I'd check the spec first ( if your lathe states it requires a high speed chuck i wouldn't use it) . I use it purely for holding work on the rotary dividing head .
@@TweedsGarage Brilliant, thank so much. My max speed is only 1710rpm and my existing 100mm chuck had 3 thou run until I adjusted it on the register. Seems it could be an economical way of upgrading to a larger chuck. Just need to figure out an adapter backplate. Cheers.
