Deutschland Dortmund built a wide variety of specialised roll-turning lathes - rolling being used in industry for a huge variety of tasks including (amongst many others) crushing sugar cane and rocks, producing paper and sheet steel, printing, textile work and forming, by the shape of a groove cut into the surface of a pair of rollers, the required profile on a strip of red-hot steel passed between them.
Given the model designation "DW", the roll-turning lathes were built with beds having either a conventional 3-way form as the Type DW-111 (as used on the Company's conventional large lathes) or with two separate beds, one at the front and one at the back. The latter type were divided into two group: those where the front bed, set level with that at the back, could to be slid along the base casting (Types DWv) and those where the front bed was elevated, being held on saddles able to be slid along the main bed (Types DWS).
DW-111 lathes were made in a choice of eight sizes as the models 31, 40, 50, 63, 71, 75, 80 and 85 with the numbers indicating the centre height in cm. DWv sliding-bed types could be had in seven sizes, all identical to the DW-11 lathes with the exception of the smallest, that was not available. DWS lathes were father restricted in choice, being available in a range of six as the Models 63, 71, 75, 80 and 85.
Sliding-bed lathes had their moveable element shifted by a long handle working through a ratchet system - a slow and steady arrangement but capable of shifting a great mass with comparative ease.
Headstocks were taken from the conventional lathes, with gearing and speeds altered to suit and retained the heavy-duty construction and forced lubrication checked through oil-flow inspection windows.
Saddles were of various forms to suit the particular job with some having all-hand feed, others with rotating power shafts and even screwcutting leadscrews but most equipped with a crank drive, exactly like that employed on a typical metal shaper with the rate of advance able to be set by moving the pivot point across the T-slotted drive boss. All types could be fitted with electrically-controlled tracing and profiling attachments and toolposts fitted with either conventional flat-plate or 4-way types - or replaceable by the maker's grinding heads.
Many kinds of steady were produced, from enclosed 3 and 4-point supports to open types able to support rolls with or without their bearings (and even the bearing housing) left in place.
Motors ranged in size from 30 h.p. on the smallest machines up to 80 h.p. on the largest, all running at 1000 r.p.m. As the lathes were large and hence peripheral speeds high, spindles turned very slowly, just 1.2 to 36 r.p.m on smallest and 0.28 to 20 r.p.m on the largest..