حفارة مجنزرة Caterpillar 312 312D Crawler Excavator

Specifications

Machine operating weight (kg) 12500

Bucket capacity (m³) 0.53

Boom length (mm) 4650

Arm length (mm) 2500

Tonnage (tons) 12

Bucket Backhoe

Performance

Slewing speed (rpm) 11.2

Slewing torque (Nm) 30.9

Travel speed (km/h) 5.1

Ground pressure (Kpa) 40.4

Bucket digging force (kN) 95

Arm digging force ( kN) 65

Maximum traction (kN) 114

Power system

Engine model

Caterpillar 3054C

Rated power (kw) 59

Displacement (L) 4.4

Cylinder diameter × stroke (mm) 105×127

Cooling method water cooling

Hydraulic system

Maximum flow of main pump (l/min) 232

Working hydraulic oil circuit (Mpa) 30.5

Travel hydraulic circuit (Mpa) 35

Slewing hydraulic circuit (Mpa ) 23

Pilot oil circuit (MPa) 4.12

Pilot pump flow (L/min) 21.9

Oil capacity

Fuel tank (L) 250

Hydraulic oil tank (L) 91

Hydraulic system (L) 104

Engine oil replacement (L) 16

Coolant (L) 18

Main body dimensions

Total length for transportation (mm) 7610

Total width for transportation (mm) 2490

Total height for transportation (mm) 2830

Total height of cab (mm) 2670

Counterweight ground clearance (mm) 900

Total length of crawler tracks (mm) 3490

Track gauge (mm) 1990

Minimum ground clearance (mm) 440

Rear end turning radius (mm ) 2140

Operating range

Maximum digging radius of the parking surface (mm) 8180

Maximum digging depth (mm) 5540

Maximum digging height (mm) 8490

Maximum unloading height (mm） 6100

Maximum vertical digging depth (mm) 4910

Maximum effective digging depth (mm) 5340