Outside jaws for Pratt 160mm 3 jaw chuck

This topic has 14 replies, 7 voices, and was last updated 3 July 2021 at 11:44 by Charles Stanley Gordon.

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17 March 2020 at 11:35 #457724
Square Peg
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@squarepeg53768
I'm after a set of outside jaws for my Pratt 1213 160mm chuck. For the price of original parts I can buy a new (not original) chuck and back plate. Suggestions?

Cheers

Bob
Advert

17 March 2020 at 11:35 #19664
Square Peg
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@squarepeg53768
17 March 2020 at 13:36 #457741
old mart
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@oldmart
I notice the Rotagrip price is £130.56 for the hard outside, could you get a set of the soft jaws and modify them to do the job, the EK16 are £31.63 a set.
17 March 2020 at 14:12 #457754
peak4
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@peak4
Try Home and Workshop, I think they keep quite a few used sets.

Bill
17 March 2020 at 14:38 #457763
Howard Lewis
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@howardlewis46836
Square Peg!

I might just have some N O S, still in original wrapping, that I was given by a friend. Am sure that they are for a 160mm chuck.

I'll go and have a look, later, to see if they are inside or outside jaws.

Watch this space.

Howard

Edited By Howard Lewis on 17/03/2020 14:39:24
17 March 2020 at 15:39 #457777
Chris Evans 6
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@chrisevans6
Square Peg, what is you location ? I have a set here (if I look hard enough) I bought a new chuck when I could not afford a new set of standard jaws. The old chuck is still in the workshop, with all the variations on chucks you would need to try for fit.
17 March 2020 at 16:08 #457784
Square Peg
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@squarepeg53768
Hi Chris, I'm in north Wales…
17 March 2020 at 16:08 #457785
Howard Lewis
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@howardlewis46836
Sorry!

Having looked, and unwrapped one set, that there are 5 sets of hard INSIDE jaws, for a 160 mm 3 Jaw Chuck,

Pratt Burnerd part No. 2210 -17603

Howard
17 March 2020 at 18:33 #457819
Square Peg
Participant
@squarepeg53768
Thanks for looking Howard.
17 March 2020 at 18:51 #457829
Chris Evans 6
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@chrisevans6
I will look for them in the workshop tomorrow and put some sizes up on here.
19 March 2020 at 21:54 #458286
Chris Evans 6
Participant
@chrisevans6
OK I've found the chuck and jaws. The chuck catalogue number is 9580??1705

Stamped on the front is T03604 Stamped on the back 589 Stamped on jaws 680

Key sizes are 18mm sliding width,7.3 from bottom of scroll teeth to slot 7,3 Slot size 7mm

Let me know if of any use.
20 March 2020 at 11:02 #458359
Square Peg
Participant
@squarepeg53768
Close but no cigar! Thanks for looking. Home and Workshop have a set for a reasonable price so I'll have to bit the bullet. What's really annoying though is that I have 2 of the jaws, the third was missing when I bought the lathe.
25 June 2021 at 20:19 #551343
Charles Stanley Gordon
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@charlesstanleygordon89952
Howard

I know this is an old post, have you any sets of Burnerd jaws 2210-17603 left please.
3 July 2021 at 07:48 #552349
brian jones 11
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@brianjones11
I have an original 4" pratt 3 jaw chuck on my ml7 and I wanted outside jaws. some googling and EB gave me serious headache. there are hundreds of different catalog nos http://www.rotagriponline.com/datasheets/Pratt/PrattChuckSpares.pdf

AFAIK you really need the exact match otherwise the jaws may not fit and be a waste of money given that the asking price for spare is 50% of a new chuck with 2 sets of jaws. Not worth the risk as you cant always try it first with EB sellers.
3 July 2021 at 11:44 #552397
Charles Stanley Gordon
Participant
@charlesstanleygordon89952
Measure the existing jaws and fill in the chart, check your sizes against any new suppliers sizes. some sizes are critical, others not so important, so Jaw width/thickness, Scroll, and the groove must be the same. The steps in the jaws are not critical nor is the overall length::: ………..So, BDEh

Edited By Charles Stanley Gordon on 03/07/2021 11:46:17
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