email: tony@lathes.co.uk
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Emco Unimat SL1000 & DB200
Photographic Essay
Unimat Home Page  Emco Home Page  Accessories  Earliest Unimat - Photographs   
Mk. 2 & 2A  Photographs  Mk. 2B Photographs  SL1000/DB200 Photographs 
Russian Copy  Unimat Nameplates  Unknown  Motors  Motor Repair  Computer Control
Home-made SL1000  ROWIC - Argentinean Collets  Mk. 4 Photographs 

Instruction Books, Parts Books and drive
belts are available for the DB200 & SL1000


At some point during the early 1960s (evidence points to 1964), the factory went over from an iron base to one formed from a pressure die-casting in a heavy-duty grade of zinc or ZAMAK. These new models were on sale in England by early 1965 and in the USA a little later, by April 1965. However, it is more than likely that stocks of the older cast-iron machines had not been exhausted and the two models may have been available side by side for some time. The change of material enabled the rate of production to be greatly increased and, by eliminating some machining operations (the finish and accuracy of the castings was equal to ground components) costs reduced. The use of dies enabled the appearance of the base to be cleaned up somewhat and allowed an almost full-length, vertical flat face to be used. These first die-cast machines have become known as the "Heavy" Unimat because, a little later, yet another change of material was made to either a different grade of ZAMAK, or possibly aluminium, resulting in the "Light" version. On the "Heavy" models at the point where the M6 screws retained the bed rails (at both headstock and tailstock) the casting was given two parallel grooves. The "Light" models were painted a hammer-effect green and with minor mechanical alterations only, including rather crude, cast-in degree-graduation marks on the front of the headstock. In America the very last production machines were distributed by LUX (replacing American/Canadian Edelstaal) and were identifiable by a large red name plate, U7750 motor and rather horrid plastic handwheels (similar to those on the Unimat 3) but with clear, white-painted graduations that are preferred by some owners. Unfortunately this model was not well finished and lacked the delightful detailing of earlier machines; it had, for example, a number of surfaces that lacked accuracy and a headstock spindle sleeve with a turned rather than ground-finish..

A standard SL1000 as sold during the 1960s

In this picture the drive is set, using a compound belt run via the idler pulley, to the slowest speed.

This British-market version of the mid 1960s still carries the importer's name (in this case an Emco-owned company) with the addition of the letters "SL" to the description.

While the designers did not think of everything they did, thankfully, provide a hole through the end of the headstock spindle to allow a locking bar to be used to assist in chuck removals.

Whilst the headstock-swivel degree marks were not in the Swiss watchmaker's class there were, nevertheless, a useful addition to the machine. The standard  M6 socket-headed screws may have looked slightly out of proportion to the rest of the machine but ensured an easy interchangeability the need for only one Allen key to operate tool set up and slide adjustments.

The unprotected cross-feed screw quickly became covered with turnings and tended to wear quickly.

Proper domed screws were used to fasten the bed rails and lock in the tailstock barrel handwheel assembly.

Although crude, the "close-down" slot in the Emco tailstock casting did at least have the merit of being unusually long to spread the load and reduce the chances of cracking.

Cast-iron Emco Mk. 2B with dished base casting, a flat-front headstock located by a flat vertical key, a brush-type motor with wire switch and blackened handwheels

A development of the DB200 Mk. 4 with a convex base castings, wasp-tail handles, a rounded headstock front located by a vertical pin and induction (brush-less) motor.


Instruction Books, Parts Books and drive
belts are available for the DB200 & SL1000

Emco Unimat SL1000 & DB200
Photographic Essay
Unimat Home Page  Emco Home Page  Accessories  Earliest Unimat - Photographs   
Mk. 2 & 2A  Photographs  Mk. 2B Photographs  SL1000/DB200 Photographs 
Russian Copy  Nameplates  Unknown  Motors  Motor Repair  Computer Control
Home-made SL1000  ROWIC - Argentinean Collets  Mk. 4 Photographs 

email: tony@lathes.co.uk
Home   Machine Tool Archive   Machine-tools for Sale & Wanted
Machine Tool Manuals   Machine Tool Catalogues   Belts   
Books   Accessories