Undercarriage Of Hitachi Sumitomo SCX700 Crawler Crane 70ton
Traction mechanism
a.Each track is driven by an axial piston motor through reduction gear. This mechanism allows counter-rotation of tracks for maneuverability in close quarters.
b. When the lever is in neutral position, both hydraulic brake and spring-set/hydraulic-released multiplate disc brake are automatically applied for stopping.
Track Frame
All-welded, stress-relieved, box-section construction.
Side Frames
a. Side frames of all-welded construction can be retracted for transportation. Side-flame Extending/Retracting Device z Side frame are extended and retracted with a hydraulic cylinder located inside the track frame. Hydraulic power source for the two hydraulic cylinders is separated from other systems to allow combined operation of travel and side frame.
b. The side frames are extended and retracted quickly without need for piping
About the Undercarriage Parts
Hitachi Sumitomo SCX700 Track Shoes are Heat-treated alloy steel castings with induction-hardened roller path and driving lugs.
No. of upper rollers for Hitachi Sumitomo SCX700 (each side) is 3 pieces, No. of Hitachi Sumitomo SCX700 lower rollers (each side) is 11 pieces, No. of track shoes for 70ton SCX700 Crawler Crane (each side) is 63 pieces.
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