1966 - 1970 CATERPILLAR R2900G XTRA WHEEL LOADER

Technical Description

The Caterpillar R2900G XTRA is an underground mining wheel loader designed for load-haul-dump operations in hard rock environments. Powered by a Cat 3406E EUI ATAAC engine producing 410 gross horsepower at 2,100 rpm, it delivers 378 net horsepower for consistent performance in demanding mining applications. The machine features a 8.9-cubic-meter standard bucket capacity with a maximum dump clearance of 6.2 meters and impressive breakout force of 25,100 kilograms, enabling efficient loading of ore and waste rock. With an operating weight of 56,000 kilograms and static tipping load of 45,782 kilograms, the R2900G XTRA maintains excellent stability during loaded operations on steep underground grades. The loader's compact dimensions—11.1 meters in overall length, 3.45 meters in width, and 2.99 meters to the top of the cab—optimize maneuverability in confined mine workings. Hydraulic cycle times are optimized for productivity, with 7.6-second raise, 2.8-second dump, and 2.4-second lower cycles for a total cycle time of approximately 13 seconds. The four-speed transmission provides forward speeds up to 24 kilometers per hour and reverse speeds to 26 kilometers per hour for efficient tramming between loading sites. The loader is equipped with a four-corner oil-cooled braking system and incorporates articulation capability for enhanced turning radius in tight underground passages, making it ideal for modern underground hard rock mining operations requiring reliability and performance in challenging conditions.