7/8″ x 5 tpi acme threaded rod

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7/8″ x 5 tpi acme threaded rod

This topic has 13 replies, 10 voices, and was last updated 13 May 2019 at 17:51 by Peter Verbree.

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6 May 2019 at 23:21 #408026
ronan walsh
Participant
@ronanwalsh98054
Bought a Jones and shipman 540 surface grinder recently, its old but complete and in good condition overall. However the crossfeed screw and nut are worn, which i have been told is usual, as the powerfeed "kicks" the screw when powerfeed is engaged.

They are available from jubilee mac, for nearly £600 ! So i want to make a new screw and nut. It would make life easier if i could buy the threaded rod rather than having to screwcut one.

Anyone know where i might be able to buy threaded rod in this size ?

Many thanks.
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6 May 2019 at 23:21 #26593
ronan walsh
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@ronanwalsh98054
7 May 2019 at 00:17 #408031
Hopper
Participant
@hopper
I recall there have been one or two suppliers of Acme threaded rod suitable for leadscrews mentioned in threads on here in the past so if you sit down and search the site for Acme threaded rod you should find them … eventually.
7 May 2019 at 01:36 #408033
peak4
Participant
@peak4
Certainly available from the USA

https://www.roton.com/family/acme-right-screws-and-nuts-7060204/

I've only seen 3/4" or 1" over here, though you could try This Firm

http://halifaxrs.com/products-view/lead-and-power-screws/

Bill
7 May 2019 at 05:40 #408034
Hopper
Participant
@hopper
And you'll need to determine if it's right or left hand thread as many leadscrews etc are the latter.
7 May 2019 at 06:46 #408039
Pete Rimmer
Participant
@peterimmer30576
A cross-slide on any machine where the handle doesn't travel with the slide will be LH thread, unless it's geared.

Edited By Pete Rimmer on 07/05/2019 06:47:26
7 May 2019 at 07:08 #408041
clogs
Participant
@clogs
also try http://www.ukbolt.co.uk

I needed some TR20 acme for my Sip bandsaw……

1mxTR20, rh threaded rod was less trhan £16……

works a treat……
7 May 2019 at 07:43 #408045
not done it yet
Participant
@notdoneityet
As you are intending to change both screw and nut, is it that important to have 5/8” ACME 5tpi?

A 16mm x 5mm pitch trapezoidal is likely easier to source?

An alternative might be to cut the current screw to remove the difference in thread from middle to end and make a new nut to fit. Probably last years…

Edited By not done it yet on 07/05/2019 07:45:50
7 May 2019 at 08:38 #408048
ianj
Participant
@ians
Posted by clogs on 07/05/2019 07:08:55:

also try http://www.ukbolt.co.uk

Clogs that link takes me to Nike trainers WEB site.

Ian
7 May 2019 at 09:26 #408054
bernard towers
Participant
@bernardtowers37738
Try **LINK** . I have used them in the recent past and were very helpful
7 May 2019 at 09:27 #408055
John Haine
Participant
@johnhaine32865
How about a ball screw? Would probably need 16 x 5 mm, much less friction, need to protect from grinding dust, Dyson vac hoses reputed to make good bellows.
7 May 2019 at 20:46 #408137
ronan walsh
Participant
@ronanwalsh98054
The thread is right hand, which makes things slightly easier. I would prefer to keep the same size thread as the original as the dials would be miles out otherwise. I suppose i could use a dro but was not intending to. Thanks to all for the links, i will either email or ring them over the next few days and see what i can chase up. The nut i can make up myself. Whats the best brass/bronze for that ?
7 May 2019 at 20:58 #408139
Pete Rimmer
Participant
@peterimmer30576
Posted by ronan walsh on 07/05/2019 20:46:09:

The thread is right hand, which makes things slightly easier.

Course it is, the handle is on the front of the valve block which travels with the y-axis. I must have had a brainwarp earlier.
13 May 2019 at 17:51 #409113
Peter Verbree
Participant
@peterverbree40087
I just bought a piece of this material and a bronze nut from Roton.

I know you are on the other side of the pond, but I got great service on material that is hard to find.

Peter
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