HomeEquipmentEarthmoving EquipmentExcavatorsBrochure: Caterpillar 312E Hydraulic ExcavatorJuly 25, 2013Caterpillar - CatDownloadRelatedCat 312E ExcavatorVideo: See the Cat 312E Hydraulic Excavator In ActionCaterpillar - CatRecommendedMachine Grade Control, GPS, Laser & OtherMachine & Grade Control in Construction Surface PrepHow these technologies provide precision and finesse, even for novice operators responsible for moving earth and materials to exact design specifications.Construction TechnologyConstruction's Inevitable Shift to Alternative PowerWhat do new fuel options and emission regulations mean for contractors?SponsoredKomatsu HB365LC-3 drives performance, fuel efficiency and sustainabilityDo more with less — its hybrid electrical swing system can increase productivity and reduce fuel consumption compared to non-hybrid Komatsu excavators.