by John

This is the lathe which was used to turn the 18.1″ guns of the IJN Yamato. (keep reading. Bismark comes later). The Yamato lathe was purchased by Japan in 1937 from Germany. Japan did not have the capability to make such a huge lathe. The only countries which did have that capability were Britain, USA, and Germany, and Japan did not want the British or Americans to know how big a battleship was being built. The weight of the Yamato (>70,000 tons) was not known to the allies until after WW2! It was the heaviest battleship ever constructed, and carried the biggest guns ever installed on a battleship.

1. Wagner lathe used to manufacture the Yamato and Musashi guns.

I assembled a plastic model of the Yamato earlier this year.

2. 1:350 scale Tamiya model.

….and showed my model engineering club.

Somehow the conversation involved the guns, the Yamato Museum, and the huge lathe which is being moved from its original factory, where it was in use until very recently, to the Yamato Museum.

A senior member of our group, who lives near Yallourn, Victoria, stated that the lathe which made the guns for the Bismarck was currently located in Yallourn, Victoria, Australia!!!

There was a collective dropping of members jaws. WHAT???? HOW??? It cannot be true!!

To cut the story short, further investigation by the member, confirmed that a very large Wagner lathe had been shipped to Australia, as a reparation after WW2. The lathe had been installed in the State Electricity Commission workshop to turn large generating armatures. The SEC workshop was now a private manufacturing factory, and the lathe was still there!!!

The managing director of the company was contacted, and a few weeks later 24 of our club members visited the factory with the tour being conducted by the owner-manager. The factory was fascinating, and the tour lasted over 2 hours, but I shall concentrate on the lathe.

3. This is our group, in front of the headstock, clearly displaying the Wagner Dortmund name plate. I am in there. The machines to the right are applying tungsten to the large roller seen, using a robotic arm and laser welding machine. The lady in the orange jacket is the member who told us about the lathe’s presence.

4. The 4 jaw chuck is 8’4″ diameter.

5. The lathe has 2 carriages. The toolpost is over 6′ high. The beds are covered while the tungsten coating is being applied.

6. The tailstock end of the bed, with 6 steadies. Unfortunately I could not find a serial number, but it was probably hidden behind other equipment.

The distance between centres for the lathe is 70’/20m, certainly big enough to have turned the Bismarck guns. The lathe OAL is 90′. The original tailstock and a section of bed was lost at sea in a storm during transportation to Oz. Replacements were found and installed.

Currently the lathe has a 50hp electric motor. It turns between 1 and 20rpm.

7. The factory covers 20,000m3. I could not get a decent camera view of the whole lathe. The headstock is to the left of this shot. This view is one end of one of the six factory bays.

So. That was a great day.

The factory owner manager is searching for documentation about the lathe, which is essential if the Bismarck association (and Tirpitz, and more than a few shore defense guns around France, Denmark, Norway) provenance is to be firmly established. The locals certainly believe that it IS the lathe which made the Bismarck guns. It is possibly true. The Yallourn lathe looks very similar to the Yamato lathe.

8. Bismarck

9. Tirpitz was the sister ship of Bismarck. Showing a ~18m long 15″ barrel without the breech.