... excavator is equipped with Japan-made Tier II YANMAR engine, nice appearance. Its operating weight is 21.8 tons ... hydropower project, mining, harbor construction, etc.1. Tier II original Cummins engine 6BT5.92. Globally sourced main pump, main valve, swing motor ... rated flow 2×208L/minHydraulic system operating pressure 31.9/34.3MpaSwing mechanismSwing motor Axial piston motorSwing deceleration Planet ...