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Current number of specifications

Caterpillar 312B Hydraulic Excavator

Selected Dimensions

Boom/Stick Option
I. Max Cutting Height27 ft in8230 mm
J. Max Loading Height19.2 ft in5860 mm
K. Max Reach Along Ground25.6 ft in7790 mm
L. Max Vertical Wall Digging Depth14.5 ft in4430 mm
M. Max Digging Depth16.8 ft in5130 mm
B. Width to Outside of Tracks8.2 ft in2490 mm
D. Length of Track on Ground9.1 ft in2780 mm
E. Ground Clearance1.4 ft in440 mm
G. Height to Top of Cab9.1 ft in2760 mm
H. Tail Swing Radius7 ft in2130 mm
F. Track Gauge6.5 ft in1990 mm
N. Shoe Size19.7 in500 mm


Number of Cylinders4
Gross Power91 hp67.9 kw
Net Power84 hp62.6 kw
Power Measured @1900 rpm
Displacement259 cu in4.2 L
Operating Weight27410 lb12433 kg
Fuel Capacity66 gal250 L
Cooling System Fluid Capacity4.1 gal15.5 L
Hydrauilc System Fluid Capacity42.8 gal162 L
Engine Oil Capacity3.4 gal13 L
Swing Drive Fluid Capacity0.74 gal2.8 L
Operating Voltage24 V
Alternator Supplied Amperage50 amps
Hydraulic System Relief Valve Pressure4980 psi34335.9 kPa
Hydraulic Pump Flow Capacity63.4 gal/min240 L/min
Swing Mechanism
Swing Speed12 rpm
Swing Torque22422 lb ft30400.2 Nm
Shoe Size19.7 in500 mm
Ground Pressure5.7 psi39 kPa
Max Travel Speed3.4 mph5.5 km/h
Drawbar Pull22930 lb102 kN
Track Gauge6.5 ft in1990 mm
Reference Bucket Capacity0.6 yd30.46 m3
Minimum Bucket Capacity0.46 yd30.35 m3
Maximum Bucket Capacity1 yd30.78 m3
Boom/Stick Option (HEX) 1
Boom/Stick Option (HEX) 1boom w/ stick 2100mm
Max Digging Depth16.8 ft in5130 mm
Max Reach Along Ground25.6 ft in7790 mm
Max Cutting Height27 ft in8230 mm
Max Loading Height19.2 ft in5860 mm
Max Vertical Wall Digging Depth14.5 ft in4430 mm
Boom/Stick Option (HEX) 2
Boom/Stick Option (HEX) 2Boom 14'1" (4300mm) / Stick 8'2" (2500mm)
Shipping Height of Unit9.1 ft in2760 mm
Shipping Length of Unit24.9 ft in7595 mm
Max Digging Depth18.2 ft in5550 mm
Max Reach Along Ground26.8 ft in8175 mm
Max Cutting Height27.8 ft in8475 mm
Max Loading Height20 ft in6095 mm
Max Vertical Wall Digging Depth16.3 ft in4970 mm
Boom/Stick Option (HEX) 3
Boom/Stick Option (HEX) 3Boom 14'1" (4300mm) / Stick 9'10" (3000mm)
Shipping Height of Unit9.1 ft in2760 mm
Shipping Length of Unit25 ft in7610 mm
Max Digging Depth19.8 ft in6050 mm
Max Reach Along Ground28.3 ft in8625 mm
Max Cutting Height28.5 ft in8695 mm
Max Loading Height20.8 ft in6330 mm
Max Vertical Wall Digging Depth17.5 ft in5345 mm
Width to Outside of Tracks8.2 ft in2490 mm
Height to Top of Cab9.1 ft in2760 mm
Ground Clearance1.4 ft in440 mm
Removal Counterweight Clearance3 ft in920 mm
Tail Swing Radius7 ft in2130 mm
Length of Track on Ground9.1 ft in2780 mm