JCM921D Hydraulic Crawler Excavator’sOperating Weight（with long boom）is 20.5t, equipped with CUMMINS B5.9-CEngine, with Boom 7.64m,Arm 5m, Bucket 0.45m3.
JCM921D HydraulicCrawler Excavator (withLong Boom)
TechnicalSpecifications
Engine | Travel System | |||||||||||||
Model | CUMMINS B5.9-C | Travel motors | JEIL, 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 | 201kN | |||||||||||
Power output | 112kW/1950rpm | Grade ability | 70% (35°) | |||||||||||
Ground clearance | 470mm | |||||||||||||
Hydraulic System | Cab ＆ Control | |||||||||||||
Pump | KAWASAKI, | 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 | 2×208L/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 | 95mm×65mm×885mm | |||||||||||
Swing System | Refilling Capacities＆lubrications | |||||||||||||
Swing motor | KAWASAKI, | 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 | 0.45m3 (SAE) | |||||||||||||
Bucket width | 921mm | |||||||||||||
Arm Type | ||||||||||||||
A | Max. digging height | 11560mm | ||||||||||||
B | Max. dumping height | 9393mm | ||||||||||||
C | Max. digging depth | 9464mm | ||||||||||||
D | Max. vertical digging depth | 7876mm | ||||||||||||
E | Max. Depth cut for 2440m(8')Level Bottom | 9315mm | ||||||||||||
F | Max. digging distance | 13203mm | ||||||||||||
G | Max. digging radius at ground level | 13075mm | ||||||||||||
H | Min. swing radius of work equipment | 4400mm | ||||||||||||
Digging Force (ISO6015) Unit: kN | ||||||||||||||
Arm length | 5000mm | |||||||||||||
Bucket digging force | 86kN | |||||||||||||
Arm digging force | 60kN | |||||||||||||
Arm Type 5000mm | ||||||||||||||
A | Overall length | 11480mm | I | Tread | 3360mm | |||||||||
B | Ground contact length (Transportation) | 4655mm | J | Track length | 4160mm | |||||||||
C | Overall height(to top of boom) | 3053mm | K | Track gauge | 2200mm | |||||||||
D | Overall width | 2800mm | L | Track width | 2800mm | |||||||||
E | Overall height(to top of cab) | 2977mm | 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 7.64m, arm 5m, and bucket 0.45m3) | ||||||||||||||
Shoe width | 600mm | |||||||||||||
Overall width | 2800mm | |||||||||||||
Ground pressure | 45KPa | |||||||||||||
Operating weight | 20500kg | |||||||||||||