Inherited Problems

This topic has 32 replies, 13 voices, and was last updated 29 January 2015 at 18:42 by David Watson 3.

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25 January 2015 at 15:37 #177290
Michael Gilligan
Participant
@michaelgilligan61133
David,

Are you really sure that the marking is RJ6 not B16

The link that I posted was specifically for Rexon chucks.

MichaelG.
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25 January 2015 at 15:46 #177291
Neil Wyatt
Moderator
@neilwyatt
I'll correct my earlier comment about B tapers.

B10 = small end of MT1

B12 = large end of MT1

B16 = small end of MT2

B18 = large end of MT2

B22 = small end of MT3

B24 = Large end of MT3

The number after the B is the diameter of the large end of the taper to the nearest mm, and 'about' 1mm larger than the large end of the socket (~2mm in the case of B22 and B24).

Neil
26 January 2015 at 17:57 #177385
Steve Pavey
Participant
@stevepavey65865
Re the question about inserts, have a look at **LINK**

If you have an existing insert you can measure up you should be able to find something that will fit.

eg a TCMT09 02 04 should be a triangular insert, 9 mm along the edge, 2.38 mm thick and with a 0.4mm tip radius.

a CCMT06 02 04 is an 80 deg diamond shape, 6mm edge, 2.38 thick and 0.4 tip. (These just happen to be the two tips that I use, the link explains what all the letters and numbers represent).
26 January 2015 at 17:59 #177386
Steve Pavey
Participant
@stevepavey65865
For some reason my link isn't showing?. Go to https://www.carbidedepot.com/formulas-insert-d.htm

edit – maybe that's how links are displayed here??

Edited By Steve Pavey on 26/01/2015 18:20:47
26 January 2015 at 18:21 #177390
David Watson 3
Participant
@davidwatson3
I had one of those bright ideas today. The chuck for the mini Lathe has B16 stamped on it and it wont go on the stub in the drill. I took the drill chuck to work today to give it a good clean up and as I thought it says RJ6-13 on it. As I said I will try the JT6 from Chronos. I am starting to think I might upgrade my workshop . I had an ML2/4 before I had a break from model engineering. My father had an ML7 with a long cross slide and a few other simple modifications that kept him going for years. I could justify the cost of a decent one as an early retirement present maybe. The Super 7 seems a bit pricy for occasional use.
27 January 2015 at 18:34 #177509
Michael Gilligan
Participant
@michaelgilligan61133
Posted by David Watson 3 on 26/01/2015 18:21:15:

… as I thought it says RJ6-13 on it. As I said I will try the JT6 from Chronos.

.

David,

Sorry if [as it appears] I was trying to lead you astray with the B16 suggestion.

Best guess now, is that the R stands for Rexon, and the J6 for Jacobs [Taper] 6.

… Hopefully you are on to a winner.

MichaelG.
27 January 2015 at 20:04 #177524
Neil Wyatt
Moderator
@neilwyatt
Posted by Steve Pavey on 26/01/2015 17:59:06:

For some reason my link isn't showing?. Go to https://www.carbidedepot.com/formulas-insert-d.htm

edit – maybe that's how links are displayed here??

Edited By Steve Pavey on 26/01/2015 18:20:47

If you insert a link the default is to display **link** if the text matches the URL. You can edit the text to anything you want, I often remove the HTTP bit and add … in the middle of long links.

Neil
29 January 2015 at 18:42 #177723
David Watson 3
Participant
@davidwatson3
At last I have a result regarding the drill chuck.,it was JT6 . New keyless chuck from Chronos for £21 is a good result after a bit of a search. Now I can get some holes drilled the block for the clayton. Still thinking about an ML7.
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