311B

Overview & Specifications

Engine

Engine Model

Cat 3064T

Cat 3064T

Flywheel Power

79 hp

59 kW

Gross Power

85 hp

63 kW

ISO 9249

79 hp

59 kW

SAE J1349

78 hp

58 kW

EEC 80/1269

79 hp

59 kW

Bore

4 in

102 mm

Stroke

5.1 in

130 mm

Displacement

259 in3

4.25 L

Weights

Operating Weight

27680 lb

12560 kg

Swing Mechanism

Swing Torque

22422 lb ft

30400 kN·m

Swing Speed

10.8 RPM

10.8 RPM

Drive

Maximum Drawbar Pull

20720 lb

92 kN

Travel Speed

3.4 mph

5.5 km/h

Hydraulic System

Main Implement System – Maximum Flow (2x)

28 gal/min

108 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

4.5 gal/min

17 L/min

Pilot System – Maximum Pressure

570 psi

3900 kPa

Boom Cylinder – Bore

4 in

100 mm

Boom Cylinder – Stroke

40 in

1002 mm

Stick Cylinder – Bore

4.3 in

110 mm

Stick Cylinder – Stroke

47 in

1194 mm

Bucket Cylinder – Bore

4 in

100 mm

Bucket Cylinder – Stroke

37 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)

0.69 gal

2.6 L

Hydraulic System (including Tank)

41.5 gal

157 L

Hydraulic Tank

25.9 gal

98 L