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Hi all, newbie with first lathe, rare one i think.

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Michael Gilligan19/10/2021 17:50:21
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19258 forum posts
959 photos

Posted by wayne ollerenshaw on 19/10/2021 17:31:11:

.

I paid £380, i only jumped at it as its a dam good price, well i thought and nont knowing much about lathes. and i was planning on spending well over a grand for a lathe next year or so. You could call it an impulse buy.

.

Looks like you made a very good buy, Wayne

Try not to find anything broken, though … Spares could be tricky to find. surprise

MichaelG.

wayne ollerenshaw19/10/2021 18:46:31
21 forum posts
Posted by Michael Gilligan on 19/10/2021 17:50:21:

Posted by wayne ollerenshaw on 19/10/2021 17:31:11:

.

I paid £380, i only jumped at it as its a dam good price, well i thought and nont knowing much about lathes. and i was planning on spending well over a grand for a lathe next year or so. You could call it an impulse buy.

.

Looks like you made a very good buy, Wayne

Try not to find anything broken, though … Spares could be tricky to find. surprise

MichaelG.

What can be broken easy though, gears can be made, there is one with three teeth half missing. not sure on what else can break easy, or with misuse.

But yes its a good bu i reckon

wayne ollerenshaw19/10/2021 18:48:45
21 forum posts

Ok then gears i have

25

40 with 2 off

42

45

46

50

55

64

70

76

100

plus whats on the lathe now, so looks like a full set ??

I turned the lead screw 10x and the bed moved 2.5" or near as dam but for 8 thou.

Pete Rimmer19/10/2021 19:02:56
1094 forum posts
69 photos

What gears are on the machine Wayne? The 25, 42,46 and 64 aren't part of the original set but you shoud have a pair of 50's and a pair of 20's.

wayne ollerenshaw19/10/2021 19:22:13
21 forum posts
Posted by Pete Rimmer on 19/10/2021 19:02:56:

What gears are on the machine Wayne? The 25, 42,46 and 64 aren't part of the original set but you shoud have a pair of 50's and a pair of 20's.

just did a quick removal and found

20 x two

35

45

65

80

plus lead screw one i which cant see the number.

Brian Wood20/10/2021 09:25:07
2474 forum posts
39 photos

You could make an intelligent guess at the one on the leadscrew by measuring the diameter and seeing what you do have that is about half that diameter.

You might be lucky and find it is 127 teeth in which case the metric side of the threading table also becomes available in the threads that the lathe can screw cut. The best result of course is to count the teeth, then you know for certain what it is and can mark it accordingly.

Brian

wayne ollerenshaw21/10/2021 21:37:54
21 forum posts
Posted by not done it yet on 17/10/2021 21:52:54:

Hi W.olly, welcome over here.🙂

Get the 2HP motor. Have you checked the threads on any of the bolts and measured the lead screw pitch (travel per rev) yet?

You won’t break it if you are careful. It is built like the proverbial brick bog.

Ipswich is a bit far for me, but I expect there are some nearer, who could give you some practical on-site advice- sort out your accessories and get that indexer working.

The better VFDs can be programmed for all manner of things.

Edited to add: Check the type of bearing on the headstock. If it is a plain bearing stick to the 1000rpm limit - well not much more. If a taper roller bearing, the main spindle could go much faster but the gearbox may not like it. It would be a shame to push it too hard.

Edited By not done it yet on 17/10/2021 22:04:10

okeydoke then. is the only way to check what bearings there is in there is to strip it ? cant see much otherwise.

Brian Wood22/10/2021 17:51:56
2474 forum posts
39 photos

I would be very reluctant at this stage in your knowledge of this lathe and it's potential habits to strip it down just to establish what sort of bearings the spindle runs in. Not only will you disturb any preload setting, without knowing what it should be set back to afterwards, but you run the risk of introducing foreign bodies into the bearings in taking it apart and putting it together.

Does it really matter that much what the bearings are? Spindle speeds are given on the information plate and I would stick to those as a guide to see how the lathe performs before any such invasive surgery.

Thus far I don't think you have cut any metal on it yet.

Brian

Edited By Brian Wood on 22/10/2021 17:54:13

wayne ollerenshaw22/10/2021 19:00:17
21 forum posts
Posted by Brian Wood on 22/10/2021 17:51:56:

I would be very reluctant at this stage in your knowledge of this lathe and it's potential habits to strip it down just to establish what sort of bearings the spindle runs in. Not only will you disturb any preload setting, without knowing what it should be set back to afterwards, but you run the risk of introducing foreign bodies into the bearings in taking it apart and putting it together.

Does it really matter that much what the bearings are? Spindle speeds are given on the information plate and I would stick to those as a guide to see how the lathe performs before any such invasive surgery.

Thus far I don't think you have cut any metal on it yet.

Brian

Edited By Brian Wood on 22/10/2021 17:54:13

I am just trying to get info for the lathe still, i have not yet touched it but for a clean down. rebuilding this cant be any harder than an engine which i can do, but yes the settings to rebuild it i still need to find out which is what i am trying to do still, very little info found still on these lathes. you dont ask you dont know, so its all gathering info for now.

I plan to get the new motor fitted first on a new cabinet i will building soon, then see how it runs. oh yes first new oil added once drained. i cant find a drain so it will be pumped out with a sump pump i have from when i serviced boat engines. what gets me is the vary in folks idea on what oil to use for the head stock.

Brian Wood22/10/2021 19:22:28
2474 forum posts
39 photos

OK, I understand you are gathering information, I guessed wrongly at your response re. spindle bearings.

I used 10W-50 oil in my recent restoration, a geared head lathe made in 1947 so not that unlike yours. Plain SAE 30 horticultural oil would also be a good choice. Avoid gear oils and very thin hydraulic oils, they would both be wrong for differing reasons.

Brian

Edit. Look underneath the headstock, there might be a drain plug there.

Edited By Brian Wood on 22/10/2021 19:23:18

Pete Rimmer22/10/2021 20:27:20
1094 forum posts
69 photos

The bearings and shafts are all gallery fed which are filled by spalsh lubrication so the most important thing is that there is at least the right amount of oil in there or in any case enough so that the splash system works. If in doubt I always go for ISO32 hydraulic oil.

not done it yet22/10/2021 23:08:41
6430 forum posts
20 photos

Lubricants have improved tremendously since that lathe was built. Most modern oils of the correct viscosity are likely far superior to the original spec. No particular need for a hydraulic oil but many much more highly stressed machines use a universal hydraulic oil for gearbox and hydraulics. Thinking here of agricultural applications.

wayne ollerenshaw13/11/2021 20:59:34
21 forum posts

Think i will have my first go tomorrow, made new cabinet now and sorted the fitting of the new 3ph motor and VFD out. need to programme the VFD though i think. it runs but its tech so ill sort that tomorrow aswell.

I also found the G box drain and filler, so i will be doing an oil change soon aswell.

storage for gears and face plates

the belt adjuster is temp as i need the lathe to make a decent adjuster.

Oh and not painting the cabinet, i was but not now. I will be at some point adding a draw or two in the end unit aswell for tooling.

cant wit to get going now

Howard Lewis14/11/2021 16:11:42
5528 forum posts
13 photos

As Brian says, measure the OD of the gear on the Leadscrew.

Measure the OD of one of the other gears, say a 60T ( In both Imperail and Metric units ) Add 2 to the tooth count, so as an example, 62.

If you divide the 62, by the OD in inches, if it is an Imperial gear, you should get a whole number like 14, 16, 18,or 20, possibly. That number is the Diametric Pitch

( i. e. 62 / 3.1 = 20. So a 127T, 20 DP gear would have an OD of 6.45 " )

If it is a Module gear, the OD in mm, divided by Tooth Count + 2 ) should give a number like 1.25 or 1.5.

That is the Module Number..

A 1.5 Module, 62T gear would have an OD of 96 mm. A 1.25 Module, 62T gear would have an OD of 80 mm

Armed with the DP or Module, measuring the OD of the gear on the Leadscrew and applying a similar calculation should tell you how many teeth are on that gear.

HTH

Howard

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