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Warco lathe Users


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Chris Short 105/05/2019 12:56:29
6 forum posts

Hi everyone

I have recently bought a Warco GH1330 lathe. I am quietly impressed with it so far, but as usual with this kind of thing, the instruction manual is useless.

Its a metric lathe but I can’t figure out if I can cut imperial threads with it. The legend on the lathe has the relevant gear and lever settings for imperial threading but there’s one item that is puzzling me.

For imperial threading, the legend only specified the tooth count of two of the three gears required. Where the third gear is normally specified, there’s simply an arrow. Does anyone have any experience of threading with this machine or know what the arrow symbol means. Additionally, I have misplaced the manual so I’m not able to refer to that for whatever misguided help that it might offer.

Any my help or info will be greatly appreciated

thanks in advance


Mick B105/05/2019 13:23:56
1543 forum posts
83 photos

It might mean a spacer collar to take up the wheel station? On my WM250V, that's denoted by an 'H', but I guess it's possible Warco get their machines from multiple manufacturers using different protocols.

John Hinkley05/05/2019 13:47:11
845 forum posts
286 photos

Often, the gear set-ups are not always 4 gears. My lathe, for example, (not a Warco - but geared head one ), can cut a choice of threads, both metric and Imperial. Some have four gear-trains and some have just three. The three-gear trains are simple with one gear engaging with the following. When using four gears, the middle two are keyed together. Could it be that your lathe uses a similar arrangement and the arrow merely means there is no gear in that position.

I fear I haven't put that very well - but I know what I mean!

Here's the gear chart that goes with my lathe:

change gear list.jpg


Gray05/05/2019 14:10:53
1030 forum posts
13 photos


Hi Chris, I also own a GH1330, mine is imperial.

I presume you are referring to the arrow as in the above snapshot of the thread chart.

If you look to the right of the arrow, the numbers show which gear should be fitted in the lower position depending on which tpi you are cutting and the lever positions needed for that thread pitch.

Hope that makes sense,

if you need any further help, PM me. I can help you out with the manual if needed.


Chris Short 105/05/2019 16:05:15
6 forum posts

Thank very much for your replies. Gray, I fear I may be picking your brains for some time to come.

You've nailed it for me. Now let’s try it out and see 👍


Ray Lyons05/05/2019 17:40:48
164 forum posts
1 photos


Just a thought. I know from experience that the operating manuals leave a lot to be desired. Don't know about your model of lathe but when I needed a decent manual, I went to the Grizzley site where they sell similar lathes in the USA. Check to see if the Warco has a Grizzley match. They allow you to download a super manual free of charge

peak405/05/2019 20:27:13
1075 forum posts
124 photos

Chris and Ray, I too own a Warco GH1330, though an older imperial one.
The Grizzly manuals, for obvious reasons, cover the machines imported to the US, many of which are imperial, rather than metric like yours.

That said, the machines seem to be very similar;This Link is the nearest one I could find for my machine.

Effectively an imperial GH1340


Now does anyone have a manual for an old Warco 720/730, which were the 1970/1980  Myford Super 7 clones
I have one of these as well, but it's slightly different in some crucial aspects, particularly the main spindle bearings, which seem to be taper roller, rather than the bronze bush.


Edited By peak4 on 05/05/2019 20:30:03

Edited By peak4 on 06/05/2019 00:34:49

Chris Short 106/05/2019 06:05:51
6 forum posts

Thanks Guys.

I’d looked at Grizzly in the past but never been able to find a machine that closely resembled mine. The link you sent is spot on.

Other than mine being a metric lathe, the one online is identical! As you say, the Grizzly manuals are far superior to anything I’ve seen to date I did find a War o manual online a few days ago and it was less than 20 pages whilst the Grizzly one is 146 pages

Many thanks again


Lathejack06/05/2019 22:30:20
277 forum posts
334 photos

I also own an Imperial Warco 1330 lathe, I've had it for about 15 years. A heavily built and quiet smooth running machine, particularly since fitting a three phase motor.

I did some thread cutting on it last week, 16 TPI & 10 TPI in EN16 Steel bar, no problems at all.


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