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Lathe gears

Gear sizes .

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David Leyshon09/08/2021 11:55:42
4 forum posts

Hi all,

New member seeks advice, I have a Mx-210 8x16inch 750watt variable speed lathe and changed the gears to do some threading and like an idiot forgot to note the turning gear sizes. the spindle gear on the headstock is a 56 tooth gear .

Any information on the turning gear sizes would be appreciated,

Thanks in advance.

Buddy.

JasonB09/08/2021 13:40:16
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Are the feed gear drive trains not shown in the manual or the plate on the front of the lathe?

Howard Lewis09/08/2021 16:35:47
5298 forum posts
13 photos

Are you talking screw pitches (or tpi    ) ?

As Jason says, there should be a label on the machine telling you what gear train to set up to produce a particular pitch or feed rate.

Or are you looking for a particular feed rate " / rev (mm / rev )?

Does the lathe have a Norton gearbox? Probably not if you have a number of changewheels.

Tell us what you are looking to do, and the changewheels that you have, and someone may then be able to help you.

Essentially, you are probably looking to set the required ratio between the Spindle and the Leadscrew.

Howard  (Emojis GRRRR )

Edited By Howard Lewis on 09/08/2021 16:36:20

Edited By Howard Lewis on 09/08/2021 16:36:45

Edited By Howard Lewis on 09/08/2021 16:38:17

not done it yet09/08/2021 16:57:01
6321 forum posts
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Drivers will be the smallest you can fit and driven will be the largest. Same principle applies whether the gears are on the same, or different, shafts.

SillyOldDuffer10/08/2021 10:39:33
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Welcome to the forum David,

The Mx210 doesn't seem to be sold in the UK but this picture shows what looks like a WM180

mx210.jpg

The guide to the fine feed banjo settings is nearly readable, and consistent with NDIY's advice: you can get close by pairing large and small gears. The diagram should help:

mx210banjo.jpg

I guess this reads:

Gear A=70, gear B=24
Gear D=80, gear D=28
Gear E=85, gear F=H (H is a spacer)

The principle is big gear/little gear pairs chained to turn the lead-screw much more slowly than the spindle. Usually, the normal fine feed is the slowest combination that can be obtained, that is the gear with most teeth is on the lead-screw. The exact ratio may not matter very much, so feel free to experiment for best result.

Much more important to get the gears in the right size and order when threading, but that's another problem.

Perhaps a WM180 owner will comment? Is this the same lathe, and what does Warco's change-gear chart say?

Dave

Howard Lewis10/08/2021 12:16:48
5298 forum posts
13 photos

If the thread that you want to cut is listed on the table, it will tell where to put each gear to produce that pitch.

If it isn't you need to know the pitch of the Leadscrew, and calculate a gear train that will produce what you require.

If you tell us what you want to do, you are likely to get the help that you need.

Do you have a handbook (Operator Manual ) with the lathe? That should be a help in solving your problem.

Howard

David Leyshon16/08/2021 18:55:23
4 forum posts

Thanks for your reply.

Bob Stevenson16/08/2021 21:07:42
555 forum posts
7 photos

The lathe in the photo does indeed appear to be made using the components from wm180, and adding rising blocks under tailstock and top slide...also (presumably) under the headstock, to bring centre height up to 100mm (105mm?)

A metric wm180 has a leadscrew of 2mm pitch and the cog on spindle is 40 tooth.

If your lathe has these two similar components then you can use the scheme for the 180 lathe.

David Leyshon16/08/2021 23:50:21
4 forum posts

My lathe is a Mx-210, 8x16inch variable speed, 750W , metal lathe, purchased on line from Z.Zelus it's called a VEVOR

I only require the gear sizes for TURNING, the spindtle gear is a 56 tooth gear, I am looking for the slowest possible leadscrew to obtain the best turning finish work . There is a threading chart on the front of the lathe and one in the manual ,but none for the TURNING gears. None of the gears are marked with sizes, I have to compare them with my old gears from my old lathe, they are marked, beats counting the teeth . Like Dave says I've been experimenting and the best results so far are, A.72 B .40 C.80 D. 30 E.84 F. Leadscrew plain Bush spacer

Thanks again, David, (nickname Buddy).

not done it yet17/08/2021 02:51:17
6321 forum posts
20 photos

Just start with the set used for the finest thread on your lathe. It will be very close to what you want/need

JasonB17/08/2021 07:10:24
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Now we know what make it is the first hit I went to on Google searching "Vevor 210" gave me this, click for larger image. Though it sounds like you may have the big bore one if the spindle gear is larger

vevor feeds.jpg

Edited By JasonB on 17/08/2021 07:10:48

Edited By JasonB on 17/08/2021 07:47:14

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