November 2025

HSM 405H4 8WD with 20m crane and adjustable rims starts test phase in Outreach project!

Together with Hohenloher Spezial-Maschinenbau GmbH, KWF e. V., and RWTH Aachen Institutes MMI and SLA, field tests have been successfully launched!
In the Altdorfer Wald forest district (ForstBW) near Ravensburg, a prototype of an innovative felling and forwarding vehicle with a range of 20 m is currently undergoing testing.
 
• The carrier vehicle: an HSM 405 H4 with adjustable rims
• At the start: a lightweight boom weighing over 4 t and a head converted to a pure felling unit (approx. 850 kg)
• Total weight: around 40 t!
 
Click here for the videos: