LOWER
CENTER
FRAMES
The Lower Center Frame forms the main body framework of track-type excavators and is installed at the bottom of the excavator’s body. It is combined with a pair of Side Frames welded on both sides and supports the parts for driving functions and the parts for body-rotary functions. A technique that prevents deformation caused by welding is critical when manufacturing the frames to maximize the dimensional precision on locations where Side Frames and other mechanical parts are attached.