Tasik Madu mill 750mm gauge
Loco manufacturers: O&K, Henschel,
Probably the largest loco working on Java's sugar mill lines was the Orenstein & Koppel 0-10-0 built in 1929. This loco has large twelve wheel tender and Luttermöller axles. With this system, the outermost of several sets of successive driving wheel sets are not connected by coupling rods to crankshaft journals on the outside of the wheels, but by cogwheels located in the centre of the axles. The axles are housed in the locomotive frame such that they are able to move at right angles to the axis of the rails to a certain degree, likewise the cogwheels are able to slide relative to one another. In this way curves can be negotiated with less friction being generated