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Question about Harrison lathe

Harrison 140

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mark atkinson05/01/2020 21:00:07
5 forum posts

Hi, i am new to this site. I have owned mainly Myford lathes. I have just bought a Harrison 140 lathe. It looks like it has been neglected for a long time. Can anyone tell me if you can still get most spares for it. Any information on would be appreciated. cheers Mark.

Oldiron05/01/2020 21:46:33
961 forum posts
40 photos

I doubt if you can still get all the spares. You will probably have to search hard for them. You could try Harrison or Ebay or G&M Tools. Google is your friend.

regards

David George 106/01/2020 08:25:37
avatar
1808 forum posts
503 photos

Try (0) 1924 412603 the spares department for Colchester/ Harrison lathes, Elland W Yorkshire. Look for it under 600 Group who own it now. You will need as much information as possible, serial number stamped on bed and model etc.

David

Edited By David George 1 on 06/01/2020 08:28:34

Phil JOHNS06/01/2020 09:03:59
19 forum posts

You could also ask on the Harrison lathe group, someone on there may be able to help.

https://groups.io/g/HarrisonLathe/topics

mark atkinson23/01/2020 20:37:18
5 forum posts

Hi,

Does anyone know where i can get the gap bed block for my Harrison 140 lathe. ?

Cheers Marcus.

Brian Wood24/01/2020 10:00:23
2549 forum posts
39 photos

Hello Marcus,

A replacement gap piece may well be unobtainable. They are usually fitted and finished along with the bed, with perhaps a scraped surface as well which makes the piece individual.

Sorry to be the bearer of bad news.

Brian

mgnbuk24/01/2020 12:28:46
1176 forum posts
71 photos

A replacement gap piece may well be unobtainable. They are usually fitted and finished along with the bed, with perhaps a scraped surface as well which makes the piece individual.

+1

The gap piece is scraped in, fitted & pinned to the bed casting before the bed formation is milled, heat treated & finish ground.

If anything is available (which, for a lathe of that age from a builder who no longer manufactures, is very unlikely) it would be a part finished casting that would require fitting to your bed casting & then machining through (bed regrind) to get proper alignment. If you were to find the gap piece from another similar model the same would apply.

Could you check back with the people you bought the lathe from to see if the machine's original gap piece is sat under a bench somewhere ?

Nigel B

mark atkinson30/01/2020 16:49:37
5 forum posts

Hi,

I am thinking of putting a single phase motor on my Harrison 140 lathe. Can anyone tell me what RPM motor i will neen, as there are two types, 4 pole at 1400 rpm and 2 pole at 2800 rpm. Cheers Marcus.

Phil P30/01/2020 17:04:55
802 forum posts
194 photos

My Harrison L5A originally had a massive two speed three phase motor fitted.

I have since changed it for a three phase 1400 RPM 1.5kw motor and run it from a single to three phase inverter.

I was looking for the slower speeds on mine rather than the faster speeds.

Phil

PS;-

I did have a single phase 1400 RPM motor on for a while, but it was nowhere near as smooth running as a three phase motor, and I was getting some of the vibrations showing up in the turned finish.

Edited By Phil P on 30/01/2020 17:07:12

Steviegtr30/01/2020 17:05:42
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2422 forum posts
336 photos

Marcus you may wish to respond to the answers being given from other members, even if to just say thanks.

I take it from your question that your lathe has come with the old style 3 phase motor. 415 volt windings. A friend fitted a 240volt single phase to his Harrison lathe. I think it was 2 hp. Sure it is just the 1400rpm. Don't know if anyone fits the 2 pole to lathes. Some by a Transverter. Not cheap though.

Steve.

Brian Baker 130/01/2020 17:32:45
avatar
194 forum posts
36 photos

Greetings Marcus, If you can find a copy of Model Engineer no 4408, 15th July 2011, vol 207, you will find a description of how a Harrison 1100 (earlier version of the 140) was converted to 240 volt 3 phase operation, using an inverter. This is in the second part of an article "How will you ever move that", the first part being in the previous issue.

It might be of use.

regards

Brian

norm norton31/01/2020 20:07:08
183 forum posts
9 photos

Mark

I fitted a 2 pole three phase motor and inverter to my 140. I spend most of my time working it at 25Hz (half speed) but the motor will wind up to full speed, to double the lathe single speed, which the 140 was designed to take. You can even get a 140 two speed plate to put on the front.

Norm

mark atkinson08/02/2020 19:27:36
5 forum posts

Hi, I am looking to buy a quick change tool post (wedge type) for my Harrison 140 lathe. Could anyone tell me what size tool post i would need. I can not measure from my compound slide to the center of the spindle, as the lathe is completely stripped down ready for painting. Any help will be great. Cheers Marcus.

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