plaatje plaatje
Siemens walk behind tractors, models K4 and K5

Oversight of Siemens walk behind tractors models K4 and K5, built from 1927 till 1935 by Siemens-Schuckert in Berlin, Germany


Siemens Kleinfräsen K4 and K4-A (Klein = small), 4 hp two stroke petrol engine model 92068-0FM2, ca. 1925-1927. Working width 70 cm, 12 spring tines with 500 mm, rotating at 210 rpm. The engine bore and stroke are 85 x 95 mm. The carburettor was a SUM KMH 28 ru.

plaatje plaatje

These seem to be some sort of conversions from the Siemens K4, probably made in Switserland. No further details available.


Siemens Kleinfräse K5 and K5-4, 2 stroke petrol engine, developing 5 hp at 1500 rpm. The K5 had engine model 92168-1FM2, the K5-4 had engine model 3FM2. Made from 1928 till 1935, Siemens was able to sell around 5000 of the K5. Fuel consumption 3 - 4 litres/hour. Working width was max. 70 cm, with it's speeds of 1 and 2.5 km/h the K5 could work 600 or 1500 m3/hour. With use of rubber street rings, a speed of 5 km/h could be reached for transportation purposes. The machine weighed 250 kg and cost 1630 ReichsMark in 1928.

The carburettor was a SUM KMH 32. A difference between the K5 and the K5-4 is that the K5-4 no longer had a removable cover above the clutch, meant for lubricating. The engine bore and stroke are 90 x 95 mm. The latest machines were available with oil bath air filter, and wheel release clutches operated by a handle in the wheel hubs.

With many improvements, this tiller's manufacture was continued by Bungartz until ca. 1945.

plaatje Return to my Siemens page

© 1996-2014 Michiel Hooijberg