Caterpillar 311B Hydraulic Excavator

Weights
Operating Weight

27680 lb

Boom / Stick / Bucket
Max Digging Depth

18.38 ft in

Max Loading Height

18.92 ft in

Max Reach Along Ground

26.58 ft in

Maximum Bucket Capacity

1.1 yd3

Minimum Bucket Capacity

0.5 yd3

Reference Bucket Capacity

0.6 yd3

Boom
Boom Cylinder - Bore

4 in

Boom Cylinder - Stroke

40 in

Boom/Stick Option (Hex) 1

Boom 14'1' (4300 mm) / Stick 1950 mm

Boom/Stick Option (Hex) 2

Boom 14'1' (4300 mm) / Stick 7'5' (2250 mm)

Boom/Stick Option (Hex) 3

Boom 14'1' (4300 mm) / Stick 9'2' (2800 mm)

Swing Speed

10.8 rpm

Blade
Max Cutting Height

26.65 ft in

Engine & Fuel System
Engine Make

2236

Engine Model

Cat 3064T

Engine Oil

3.4 gal

Engine Oil Capacity

3.5 gal

Fuel Capacity

66.1 gal

Fuel Tank

66 gal

Gross Power

85 hp

Swing Torque

22422 lb ft

Net Power

79 hp

Number Of Cylinders

4

Power Measured @

1800 rpm

Aspiration

turbocharged

Cooling System

4.1 gal

Cooling System Fluid Capacity

4.1 gal

Displacement

259 cu in

Flywheel Power

79 hp

Drive System
Drawbar Pull

20720 lb

Final Drive - Each

0.7 gal

Maximum Drawbar Pull

20720 lb

Hydraulic System
Hydraulic Pump Flow Capacity

57.1 gal/min

Hydraulic Tank

25.9 gal

Pilot System - Maximum Flow

4.5 gal/min

Dimensions, Wheels & Tires
Ground Clearance

1.45 ft in

Height To Top Of Cab

9.06 ft in

Length Of Track On Ground

8.57 ft in

Track Gauge

6.53 ft in

Width To Outside Of Tracks

8.17 ft in

Shoe Size

19.69 in

Ground Pressure

5.51 psi

Shipping Height Of Unit

9.06 ft in

Shipping Length Of Unit

23.82 ft in

Tail Swing Radius

6.99 ft in

Battery & Electrical System
Alternator Supplied Amperage

50 A

Operating Voltage

24 V

Transmission
Max Travel Speed

3.42 mph

Travel Speed

3.4 mph

Technical Specs
Bore

4 in

Stroke

5.1 in

Eec 80/1269

79 hp

Sae J1349

78 hp

Iso 9249

79 hp

Swing Drive Fluid Capacity

0.8 gal

Pilot System - Maximum Pressure

570 psi

Maximum Pressure - Travel

4980 psi

Maximum Pressure - Swing

3340 psi

Maximum Pressure - Implements

4340 psi

Stick Cylinder - Bore

4.3 in

Stick Cylinder - Stroke

47 in

Bucket Cylinder - Bore

4 in

Bucket Cylinder - Stroke

37 in

Swing Drive - Each

0.8 gal