SRC selects Volvo EC220D excavator

A new 473 Volvo EC220D crawler excavator has taken over primary extraction and bulk muck shifting duties at SRC Aggregates Crown Quarry facility.

The new EC220D, in use at the facility near the town of Colchester, England, takes over from a Volvo EC210LC that was supplied back in 2007. It is now at the company’s other sand and gravel extraction quarry at nearby Dunmow.

The EC220D is fitted with Volvo’s Stage IIIB D6 engine, delivering 129kW of power and 849Nm of torque, coupled to an improved hydraulic system with larger pumps which in turn significantly improve hourly fuel consumption with shorter cycle times.

Operators can select from a number of modes for the task. These include I-idle, F-fine, G-general, H-heavy or P-power, with the machine automatically setting the appropriate engine speed for the work mode. Eco mode, a new feature, works in G, H or P mode. Pump flow is controlled for combined digging and swinging operations to reduce the flow loss through the overload relief valves, while maintaining digging power and maximum swing torque. Eco mode provides better fuel efficiency without loss of performance in most operating conditions.

As well as general extraction of sand and ballast, the new EC220D has been utilised to construct a large reservoir on the Crown Quarry site commissioned by the Ardleigh Reservoir Committee.