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| A1-4 lathe chuck |
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| 75Plus:
You might also try removing your 3 jaw from its backplate and use the backplate as a face plate to hold the work piece. Maybe not the ideal solution but could work. Joe |
| Swarfing:
Joe i think im going to look at fixing a new plate of some sorts. i have som 100mm/ 4" plates that i could machine up as the base then bolt some fixings too it some how, i'm building a picture at the moment. The lathee i now have is a Vernier TV-280, common as muck in France but not here. It uses a Metric DIN fitting which is a bit of a pain to find off the shelf and to top it off has M9x1.25 bolts on the inner side circle. I just machined some M10x1.25 bolts down to replace the inner ones as they knacked for the 160mm 3 jaw. I bought a new 4 jaw for it and forgot what a pain it is to machine a new back plate up with what you got. I could use the mill but too much backlash to compensate for that much accurate work. |
| bambuko:
--- Quote from: Swarfing on February 02, 2011, 07:22:17 PM ---...It uses a Metric DIN fitting ... --- End quote --- So, is it DIN fitting or A1-4" ?? definitely not the same animal ::) BTW mine is DIN 55021 Chris |
| Swarfing:
Chris it is an A1-4 with metric bolt holes, i believe it to be what they call an English/ European din standard. The Germans have their own A1-4 Din standard also. The information about these type of fittings is pretty poor and confusing as most info is for the American standard which differs by using 7/16 bolt holes. Once i make up one plate for it then i should never need worry about it really. It is classed as a short nose taper though and i would be interested if anybody else has had experience with this particular chuck mount? You can see the lathe in question here http://www.lathes.co.uk/vernier/ i will even have to modify my qctp as well because it is too big and the next model down is too small. trials to keep us busy as usual :bang: |
| bambuko:
Looks like very nice lathe indeed! There is plenty of info about the fitting and it's not confusing at all :thumbup:: DIN standard info American A-1, A-2 etc info About the only thing they have in common is the taper angle (1:4 or 7deg 7min 30sec) The rest, ie PCD of the bolts, bolt sizes, taper dia, etc, etc all differ. I have DIN 55021 #3 in my lathe and I doubt that A-1 3" chuck would fit on my lathe without problems (although never had a chance to try yet). They are great apart from the fact that chucks etc, with back ends to suit and allow direct fitting on the spindle, are very expensive and not as common as other lot (here in UK), so one ends up using backplates anyway... For you with A-1 and people with D1 it should be easier, because they are (being american I'd guess) a lot more common. Chris |
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