MONTREAL Terminals Inc of Canada has taken delivery of two rubber tyred gantry cranes (RTGs) from Liebherr Container Cranes of Ireland.

The eight-wheel RTGs can stack one over four containers high and span six containers plus a truck lane. The gantry drive is chainless, with conventional drive and hub gear for minimum maintenance.

Safe working load is 40.6t, hoisting speed is 23/57 m/min, trolley speed is 70m/min, and crane travel speed is 30/70/135 m/min.

Proprietary Liebherr technology on the RTGs include an eight rope sway prevention reeving system, DC drive technology, a PC-Scan crane management system, and an online GPS steering system with both electrical and active hydraulic control.