Schöller Special Machines (SSM) is one of the world‘s leading manufacturers of tunnel excavators and special machines that can be modified for specific applications according to customer requirements. The SSM product range includes tunnel excavators, tunnel excavation and loading machines, tunnel wheel loaders, Volvo compact machines and customised Volvo construction machines for exceptional applications.
The SSM tunnel excavators are based on proven Volvo machines that are converted and upgraded for tough tunnel and mining applications. The current product range includes seven models from 7 to 47 tonnes operating weight, with a choice of diesel or electric drive. The electrically powered excavators enable zero-emission operation on site, improve air quality for workers and help reduce the cost of ventilation.
Volvo Tunnel Excavator with SSM Twin-Drive
SSM has developed the Volvo ECR88-T (image) and ECR58-T compact tunnel excavators for use in small tunnel profiles
The Twin-Drive excavators can be operated with full
diesel hydraulics as usual. The additionally integrated electric drive allows emission-free continuous operation on site, without restrictions from limited battery capacity or charging times. A cable drum is installed to provide mobility of the electrically driven excavator on site. SSM has many years of experience with this dual drive. The Twin-Drive concept can as well be used in other Volvo excavators.
Efficient Excavators, Emission-Free Drives
The compact tunnel excavators are also available with the SSM Twin-Drive (combined diesel and electric drive)