921D

Name: 921D Model: 921D Brief: 921D Hydraulic Crawler Excavator’s Operating Weight is 20.5t, equipped with CUMMINS B5.9-C Engine, with Boom 5.7m, Arm 2.925m, Bucket 0.9m3.

详细介绍

Engine Travel System Model CUMMINS B5.9-C Travel motors JEIL, Korea; Variable axial piston motor Type Water cooling, turbocharged, empty enter-cooling Support roller quantities 2×7 Carrier roller quantities 2×2 No. of cylinder 6 Travel shoes 2×46 Bore and stroke 102mm×120mm Travel speed 3.3/5.4km/h Displacement 5.9L Drawbar pulling force 167kN Power output 112kW/1950rpm Grade ability 70% (35°) Ground clearance 470mm Hydraulic System Cab ＆ Control Pump DOOSAN, Korea Cab All-weather, sound-suppressed Cab and equipped with a heavy, insulated Floor Mat; Front Window can be opened and slid; 6-direction adjustable Seat; LED display, Automatic monitoring, display and warning; cool & hot Air Conditioner Type variable double–piston pump Max. discharge flow 2×215L/min Max. discharge pressure Boom, arm and bucket 31.9MPa Control Two hand levers and two foot pedals for travel Two hand levers for excavating and swing; Electric rotary-type engine throttle Travel circuit 31.9MPa Swing circuit 25.5MPa Control circuit 3.9MPa Boom, Arm ＆ Bucket Pilot control pump Gear type Boom cylinder 120mm×85mm×1285mm Main control valve Negative flow control Arm cylinder 135mm×95mm×1490mm Oil cooler Air cooled type Bucket cylinder 115mm×80mm×1120mm Swing System Refilling Capacities＆lubrications Swing motor JEIL, Korea Fuel tank 360L Swing motor type Axial-piston motor Cooling system 25L Brake Hydraulic oil released Engine oil 20L Parking brake Hydraulic disc brake Hydraulic oil tank 250L  Tank oil level Swing speed 11.5r/min 420L  Hydraulic system Bucket Type Backhoe bucket Bucket capacity 0.9m3 (SAE) Bucket width 1230mm Arm Type A Max. digging depth 9281mm B Max. dumping height 6480mm C Max. digging height 6605mm D Max. vertical digging depth 5735mm E Max. Depth cut for 2440m(8')Level Bottom 6404mm F Max. digging distance 9845mm G Max. digging radius at ground level 9671mm H Min. swing radius of work equipment 3500mm Digging Force (ISO6015)          Unit: kN Arm length 2925mm Bucket digging force 115kN Arm digging force 92.5kN Arm Type   2925mm A Overall length 9548mm I Tread 3360mm B Ground contact length (Transportation) 4947mm J Track length 4160mm C Overall height(to top of boom) 3073mm K Track gauge 2200mm D Overall width 2800mm L Track width 2800mm E Overall height(to top of cab) 2965mm M Shoe width 600mm F Counter weight ground clearance 1120mm O Bonnet height 2375mm G Ground clearance 470mm P Revolving frame width 2726mm H Tail swing radius 2905mm Q Distance from swivel center to tail 2853mm Operating Weight and Ground Pressure Operating weight includes basic machine (with boom 5.7m, arm 2.925m, and bucket 0.9m3) Shoe width 600mm Overall width 2800mm Ground pressure 45KPa Operating weight 20500kg