Looking at it closer, it looks the cylinders are trunnion mount, but dismounted for shipping. If the trunion mounts to the top frame, the stroke would be much longer than I first thought.
lots including Kubota B's, L's, cat, etc.. over many years
its a guillotine chopper and very common in Asia. Used to feed in brush and branches and small trunks and roots, etc... to chop them into more usable sizes to burn in stoves for cooking and heat.