¶ Walking excavators
| Company | Menzi Muck AG |
| Country | Switzerland |
| Website | https://menzimuck.com/en/menzi-muck-ag/ |
| Category | Harvesting & Extraction › Remote sensing & mapping |
¶ Overview
Walking excavators, sometimes called spider excavators or walking machines, are specialised earthmoving and forestry machines that replace conventional tracks or wheels with articulated legs, allowing them to operate on extremely steep, unstable, or rocky terrain that would be inaccessible or unsafe for standard tracked machines. Each leg is independently controlled by a hydraulic actuator and fitted with a ground-contact pad or claw that grips the slope, enabling the machine to reposition itself step by step across gradients exceeding 70 degrees while maintaining a self-levelling cab for operator comfort and safety. In forestry contexts, walking excavators are used for harvesting and processing operations on steep hill-country terrain, land preparation on rock outcrops, and recovery of windfallen timber in rugged catchments. Leading manufacturers include Menzi Muck (Switzerland), Kaiser (Switzerland), and Brokk (Sweden); these machines can be fitted with harvesting heads, grapples, or mulching attachments to perform a range of silvicultural and extraction tasks. In Australia, steep terrain harvesting presents significant challenges in regions such as the East Gippsland rainforest margins, the Otway Ranges in Victoria, and north-east New South Wales hardwood forests, where conventional machines cannot operate safely on slopes exceeding 35 degrees. Walking excavators have attracted interest from Australian forest contractors as a means of accessing timber on slopes previously harvested only by cable yarding systems or left entirely unharvested. Their low ground-pressure footprint — distributed across multiple leg contact points — also reduces soil disturbance compared with tracked machines on wet or sensitive soils. Recent developments include remote-control and semi-autonomous operation modes that further reduce operator risk in hazardous terrain.
¶ Assessment
Highly suitable for operations in rough terrain, offering strong safety benefits through improved stability and reduced rollover risk.
¶ Details
| Field | Value |
|---|---|
| Company | Menzi Muck AG |
| Country | Switzerland |
| Type | Company |