A total of 96 were built between 1892 and 1921, making the Saxon IV K the most numerous narrow gauge locomotive in Germany.

So the Sächsische Maschinenfabrik developed an engine with eight coupled wheels and which had a larger boiler and adhesive weight.

Unlike its predecessors, it was given two driven bogies in order to be able to cope with winding routes despite its length.

Nine locomotives later went to the Rügen Kleinbahn and to the Prignitz district Kleinbahnen, where they were fitted with Knorr brakes and in conjunction with that an impressive air reservoir on the boiler.

External identification marks of the upgraded locomotives are the missing sandbox on the boiler and the flatter steam dome cover.

Some locomotives ended up on 1 January 1994 in the Deutsche Bahn AG, but from that point on they were no longer used in scheduled services.