Crawler excavators

A rail-road version of Mecalac's 8MCR crawler excavator.

The machine has two sets of hydraulically-lowered rail wheels that use the dozer blade circuit to lift it clear of the tracks. The wheels can be set at 1,000mm, 1,435mm and 1,668mm widths, to suit various European rail networks. Activation of the on-rail function automatically turns on all regulatory lighting, limits the working height of the equipment, limits upper structure rotation and activates a load monitoring system.

The machine drives through four hydraulic motors, controlled by the excavator's standard travel system. Maximum speed is 25.6km/h.

The 8MCR Rail-Road weighs in at 9.6 tonnes and is powered by a 60kW Cummins engine.

Weighing in at nine tons and using a 75kW turbocharged diesel engine, the 10MCR uses a triangular track frame profile, which affords fast travel speeds in both directions using a closed-circuit hydrostatic transmission called Senso-drive. This feature allows the machine to operate at speeds of up to 10km/h in both directions.

In the cab, Mecalac has equipped the 10MCR with a mode switch that enables easy change over from skid-steer loader controls to that of tracked excavator format.

As a result, the firm claims it is a combination of four machines – excavator, loader, tool carrier and materials handler, all in one package.