Drill chucks

This topic has 8 replies, 5 voices, and was last updated 15 September 2016 at 12:02 by Ian S C.

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13 September 2016 at 17:38 #255680
Piero Franchi
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@pierofranchi37209
Hi Guys

Looking for advise in drill chucks

I have new (to me) tom senior milling machine, it did not come with a drill chuck.

I was wondering what make/quality to go for???

I do have quite a few jacobs drill chucks that come with a myford super 7 that I also own (its not up and running yet)

but the jaws could really do with being replaced and they are all on MT2 knock out arobs, not on a MT2 draw bar arbour that I need,

yes I could buy a new arbor, bont want the hassel of changing them every time, and like I said, the jaws are all prity worn.

so please point me in the write direction for a new drill chuck

I was thinking more on the lines of a 5mm to 25mm for the milling machine.
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13 September 2016 at 17:38 #24734
Piero Franchi
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@pierofranchi37209
13 September 2016 at 17:46 #255682
Thor 🇳🇴
Participant
@thor
Hi Piero,

The best drill chuck I have had was a Röhm, it has seen much use and the jaws are beginning to show sign of wear. Recently I got a keyless drill chuck as a present (I haven't found any brand name, it may have been from Chronos), so far I am very pleased with it.

Thor
13 September 2016 at 18:34 #255691
MalcB
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@malcb52554
Hi Piero,

If i am reading you right you want to hold parallel shank cutters from 5-25mm. If this is so, then i would launch straight in and get a half decent ER32 or even ER40 collet chuck and collet set.

I would then go for something like a decent used 0-3/8" Cardinal chuck and mount it on a parallel shank short arbor. You can then hold it in the relevant collet without having to remove your collet chuck all the time. This arrangement will cover much of your needs ( but not all ) if you have sufficient room on your Z axis.
13 September 2016 at 19:33 #255711
Piero Franchi
Participant
@pierofranchi37209
Thanks for the replays so far,

AS to the second reply,

I am looking to hold drill bits, I have a ER32 chuck and collets.

I was looking at getting this http://www.rdgtools.co.uk/acatalog/KEY-TYPE-DRILL-CHUCK-5—25MM-CAPACITY–no-arbour–759d.html#SID=192

and its corisponding arbour.

I not sure is I should go keyless or not,

I am guessing most of my drilling WONT be with small size drill bits
14 September 2016 at 10:45 #255813
Ian S C
Participant
@iansc
For drilling you don't need a draw bar. Most of my drill chucks are Jacobs 34, 1/16" to 1/2", although they struggle to hold 1/16". I have the Rexon keyed chuck that came with my milling machine, and another no mame these two go to 5/8", so half a dozen keyed chucks, all on Jacobs #6 taper, some with 2 MT, and others with 3 MT.

Ian S C
14 September 2016 at 11:09 #255820
Ady1
Participant
@ady1
I have only used cheaper keyless drill chucks and found that they can score the drill shank because they grip with a ball bearing arrangement

I have also found some dirt cheap ones can be pretty good, item 351816996503 on a well known site for example was a very pleasing tailstock replacement unit when the original wore out

Alternatively you can pay top dollar for a decent one from the usual suspects
14 September 2016 at 14:45 #255853
Piero Franchi
Participant
@pierofranchi37209
Very interesting regarding keyless chucks using ball bearings

My milling machine NEEDS a draw bar to both tighten and lossen the morse tapper 2,

the draw bar is knocked to push the morse tapper out of my milling head
15 September 2016 at 12:02 #255967
Ian S C
Participant
@iansc
If your mill doesn't have a cross hole in the quill for a taper pin, then all you need is a suitable bar to put down the quill to knock out the drill chuck. At most a light tap with a soft hammer on the chuck nose will hold it in, if not you have a problem with the taper, either on the drill, or on the drill it's self.

Ian S C
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