Jet 1340 Engine Lathe

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JET 1340 Engine Lathe
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Another must have for a loggers shop is one or more lathes. Some knowledge on how to use one helps a lot also, though I am self taught. The 1340 size implies that it will swing 13 inches with 40 inches between centers. If you are a good machinist you can make a lot of things on a lathe such as this. Even with minimal skills you can do what we have done most often---make a pin for something. This lathe has a removable gap, and when we had to repower one of our Fiat Allis 745C's with a Cummins engine and found that there was no flywheel to fit the transmission, we were able to remove the gap and turn the flywheel to our requirements. This lathe as a newer Asian model (anything less than 25 years old in a lather is newer) is both inch and metric compatible.

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Jet Lathe
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18 inch chuck

We have a giant lathe for giant projects, but for reasonable sized pins and bushing needed to repair a walleredout/broken joint in most equipment this later is adequate in size. The 'big jobs' that logger runs into are often related to a hydraulic cylinder. If you decide to 'rerod' a cylinder, you will need to turn down the end of the rod so it will ake the piston and thread it. The lathe bed has to be at least as long as the rod which for many cylinders implies a really long bed. Such lathes are spendy. A model such as you see here is relatively light duty, and not what a job shop machine shop might want, but for a logger to use once in a while, it is ideal.

Featured on the right is just the headstock of our large lathe. It is a change gear lathe the better part of a century old. It have 24 inches of clearance over the carriage, 30" over the bed and 4 feet in the gap, and the bed is 12 or 15 feet long. As you can see in the background we have have a chain hoist over it to change chucks as the tooling is too heavy to lift otherwise. IT will take a #5 morse taper in the tail stock, and turns really slow. In the back gears it will slow down to just a few RPM. This makes it ideal for large drilling jobs. With it I often drill the bushings to go with those pins. the tail stock has a long travel making it particularly suitable for rifle drilling grease holes in long pins. Round stock a couple feet long can be 'chucked up' without a steady rest---something you can't do readily on a smaller lathe.

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