312B Hydraulic Excavator

Overview & Specifications

Engine

Engine Model

Cat 3064T Diesel Engine

Cat 3064T Diesel Engine

Flywheel Power

84 hp

63 kW

Gross Power

91 hp

68 kW

ISO 9249

84 hp

63 kW

SAE J1349

84 hp

63 kW

EEC 80/1269

84 hp

63 kW

Bore

4.02 in

102 mm

Stroke

5.12 in

130 mm

Displacement

259 in3

4.25 L

Weights

Operating Weight

28680 lb

13010 kg

Swing Mechanism

Swing Torque

22422 lb ft

30400 kN·m

Swing Speed

12.3 RPM

12.3 RPM

Drive

Maximum Drawbar Pull

22930 lb

104 kN

Travel Speed

3.4 mph

5.5 km/h

Hydraulic System

Main Implement System – Maximum Flow (2x)

32 gal/min

120 L/min

Maximum Pressure – Implements

4340 psi

29900 kPa

Maximum Pressure – Travel

4980 psi

34300 kPa

Maximum Pressure – Swing

3340 psi

23050 kPa

Pilot System – Maximum Flow

4.8 gal/min

18 L/min

Pilot System – Maximum Pressure

570 psi

3900 kPa

Boom Cylinder – Bore

4.3 in

110 mm

Boom Cylinder – Stroke

40 in

1015 mm

Stick Cylinder – Bore

4.8 in

120 mm

Stick Cylinder – Stroke

47 in

1197 mm

Bucket Cylinder – Bore

4 in

100 mm

Bucket Cylinder – Stroke

37.5 in

939 mm

Service Refill Capacities

Fuel Tank

66 gal

250 L

Cooling System

4.1 gal

15.5 L

Engine Oil

3.4 gal

13 L

Swing Drive (each)

0.74 gal

2.8 L

Final Drive (each)

0.66 gal

2.5 L

Hydraulic System (including Tank)

42.8 gal

162 L

Hydraulic Tank

25.9 gal

98 L