Naarva stroke harvesters are reliable and efficient harvester heads for first thinning. They have been designed especially for the cranes used in agricultural tractors and small excavators. S23 and S23C models are electricity free and very lightweight. S25 and S25R models have very high productivity with low operating costs.
Stroke harvesters are suitable for first thinnings, harvesting firewood timber, energy wood harvesting and integrated harvesting.
Naarva stroke harvesters only need 40-70 l/min oil flow and can be installed in tractors without additional hydraulics.
All functions of the harvester can be used with the open/close valve of the loading grapple.
Naarva stroke harvesters are installed in place of the loading grapple without additional hoses.
S23 and S23C models are completely electricity free. They are operated with grapple open/close-valve with no extra buttons or controllers.
S25 and S25R models are controlled with grapple open/close-valve and 4 press buttons. These models are available with radio control.