Caterpillar announces the new Unit Rig™ MT4400D AC Mining Truck as part of its ongoing investment in the Unit Rig products acquired through the acquisition of Bucyrus International. The new D series model integrates a Cat® 3516C HD engine and the Cat 240T AC electric drive system with the Unit Rig MT4400 to create the MT4400D AC.
The new truck leverages Unit Rig’s 50 years of electric-drive mining truck experience and the thousands of units currently working in mines around the world. The strength of the Cat engine and drive system and Cat dealer support combine with the Unit Rig straightforward and easy-to-service design to create great value for mining customers. The MT4400D AC will be commercially available in select regions in the second quarter of 2013.
The new truck as well as its predecessor are in the popular 240-ton (218-tonne) payload class and is rated for a gross machine weight 865,000 lb (392 000 kg). The MT4400D AC takes its place in the Cat large mining truck product line alongside the industry-leading 793D and 793F to provide an AC electric drive solution that meets the needs of many miners that do not require Tier 2 emissions and who are seeking a mining truck that balances productivity and operating cost.
The MT4400D AC builds on Unit Rig’s millions of hours of field experience with the MT4400 and combines and integrates the chassis, hydraulics, electrical system and suspension with a proven Cat engine, AC drive and vehicle information management system.