Jet spindle thread

[rodjocumsen]

I'm in the process of making a longworth chuck and rather than using my good faceplate I was wanting o make one. I went to the local engineering works and bought a 1", 8 threads per inch nut. From what I've read of the Jet lathes this is the correct tread. The Nut doesn't fit. Back to the engineer with my faceplate as a sample and he assures me that the threads are the same. Has anyone else tried to fit a nut to the spindle of a Jet JML 1014 lathe. Thanks.

[Fireman sam]

I just check my chuck & on the insert I has 1x10 on it :)
Andrew

[Cliff Rogers]

Sam beat me, it is 1 x 10.

[rodjocumsen]

Thanks Andrew. It is 10 TPI and not 8. I just went and checked my owners manual again and it says it's 8 TPI, but following your example I went and had a look at my chuck and it doesn't show the TPI but it has a "C" stamped on it. When I dug out my old box, a "C" insert is 10 TPI.

So I suppose a 1", 10 TPI mild steel nut would be too much to expect at the engineering shop. I'll have to wait until my next visit to the city. Thanks.

[Wood Butcher]

Rod,
It may be worth asking your local mob, they may have something in stock. Or, I recently had a 1"x10tpi nut made for my lathe. Haven't got the bill yet but I don't expect it to be much. Any good machinist could make one fairly quickly.

[Cliff Rogers]

Suncoast Bolts & Fasteners
19 Production Avenue
WARANA QLD 4575
(07) 5493-4511

Bearings & Bolts
33 Production Avenue
KAWANA WATERS QLD 4575
(07) 5493-4644

Bolt-In Co Sunshine Coast
Wises Road (Cnr Kayleigh Drv)
MAROOCHYDORE QLD 4558
(07) 5443-2405

Jackson General Engineering
Arundell Avenue
NAMBOUR QLD 4560
(07) 5441-4400

Lanhams
8 Court Road
NAMBOUR QLD 4560
(07) 5441-1255

Nambour Fabrication & Welding Works
220 Petrie Creek Road (Phone/Fax 218-)
NAMBOUR QLD 4560
(07) 5441-3397

Kj Bolt Trade Fasteners
46 Rene Street
NOOSAVILLE QLD 4566
(07) 5474-2744

[TTIT]

I'm in the process of making a longworth chuck and rather than using my good faceplate I was wanting o make one. I went to the local engineering works and bought a 1", 8 threads per inch nut. From what I've read of the Jet lathes this is the correct tread. The Nut doesn't fit. Back to the engineer with my faceplate as a sample and he assures me that the threads are the same. Has anyone else tried to fit a nut to the spindle of a Jet JML 1014 lathe. Thanks.
Forget the nut unless you don't have a 4-jaw chuck.;) Use a spigot or recessed ring on the longworth to fit in the standard jaws of your chuck - that way you don't have to remove your chuck just to finish something off!:D

Sorry about the lousy pic' - -will have to go out in the cold if you want a better one!:eek:

[rodjocumsen]

Thanks guys, I'll think more on the spigot idea. The reason I wanted to use a nut was to reduce the size of the faceplate. The one I have is about 80mm and if I were to use it there would be a size between the smallest the longworth would take and the largest my other chuck would.
I don't have to tell you what is going to happen with my bowl sizes.
It's gret to have others to kick ideas around with.