CAT 311B Excavator


Boom/Stick Option (Hex) 1

Max Cutting Height 25.14 ft in (7660 mm)
Max Loading Height 17.39 ft in (5300 mm)
Max Reach Along Ground 23.92 ft in (7290 mm)
Max Vertical Wall Digging Depth 13.62 ft in (4150 mm)
Max Digging Depth 15.56 ft in (4740 mm)
Boom/Stick Option (Hex) 1 Boom 14’1″ (4300 mm) / Stick 1950mm

Boom/Stick Option (Hex) 2

Shipping Length Of Unit 23.79 ft in (7250 mm)
Max Cutting Height 25.58 ft in (7795 mm)
Shipping Height Of Unit 9.06 ft in (2760 mm)
Max Loading Height 17.85 ft in (5440 mm)
Max Reach Along Ground 24.84 ft in (7570 mm)
Max Vertical Wall Digging Depth 14.59 ft in (4445 mm)
Max Digging Depth 16.57 ft in (5050 mm)
Boom/Stick Option (Hex) 2 Boom 14’1″” (4300 mm) / Stick 7’5″” (2250 mm)

Boom/Stick Option (Hex) 3

Shipping Length Of Unit 23.82 ft in (7260 mm)
Max Cutting Height 26.65 ft in (8120 mm)
Max Loading Height 18.92 ft in (5765 mm)
Shipping Height Of Unit 9.06 ft in (2760 mm)
Max Reach Along Ground 26.58 ft in (8100 mm)
Max Vertical Wall Digging Depth 16.29 ft in (4965 mm)
Max Digging Depth 18.38 ft in (5600 mm)
Boom/Stick Option (Hex) 3 Boom 14’1″” (4300 mm) / Stick 9’2″” (2800 mm)

Dimensions

Ground Clearance 1.45 ft in (440 mm)
Height To Top Of Cab 9.06 ft in (2760 mm)
Width To Outside Of Tracks 8.17 ft in (2490 mm)
Length Of Track On Ground 8.57 ft in (2610 mm)
Tail Swing Radius 6.99 ft in (2130 mm)
Removal Counterweight Clearance 3.02 ft in (920 mm)

Undercarriage

Track Gauge 6.53 ft in (1990 mm)
Shoe Size 19.69 in (500 mm)
Drawbar Pull 20720 lb (92.17 kN)
Ground Pressure 5.51 psi (38 kPa)
Max Travel Speed 3.42 mph (5.5 km/h)

Engine Details

Number Of Cylinders 4
Engine Make CAT
Engine Model 3064T
Net Power 79 hp (59 kw)
Gross Power 85 hp (63.4 kw)
Power Measured @ 1800 rpm
Displacement 259 cu in (4.3 L)
Aspiration Turbocharged
Bore 4 in (101.6 mm)
Stroke 5.1 in (129.6 mm)
Engine Model Cat 3064T
Flywheel Power 79 hp (59 kw)
Eec 80/1269 79 hp (59 kw)
Sae J1349 78 hp (58.2 kw)
Iso 9249 79 hp (59 kw)

Operational Specs

Operating Weight 24526.5 lb (11125 kg)
Fuel Tank Capacity 66.1 gal (250 L)
Cooling System Fluid Capacity 4.1 gal (15.5 L)
Hydraulic System Fluid Capacity 41.5 gal (157 L)
Operating Voltage 24 V
Engine Oil Capacity 3.5 gal (13 L)
Swing Drive Fluid Capacity 0.8 gal (2.8 L)
Alternator Supplied Amperage 50 amps
Hydraulic System Relief Valve Pressure 4980 psi (34335.9 kPa)
Hydraulic Pump Flow Capacity 57.1 gal/min (216 L/min)

Swing Mechanism

Swing Speed 10.8 rpm
Swing Torque 22422 lb ft (30400.2 Nm)

Weights

Operating Weight 27680 lb (12555.5 kg)

Buckets

Reference Bucket Capacity 0.6 yd3 (0.5 m3)
Minimum Bucket Capacity 0.5 yd3 (0.4 m3)
Maximum Bucket Capacity 1.1 yd3 (0.8 m3)

Hydraulic System

Pilot System – Maximum Flow 4.5 gal/min
Pilot System – Maximum Pressure 570 psi
Maximum Pressure – Travel 4980 psi
Maximum Pressure – Swing 3340 psi
Maximum Pressure – Implements 4340 psi
Main Implement System – Maximum Flow (2x) 28 gal/min
Boom Cylinder – Bore 4 in (101.6 mm)
Boom Cylinder – Stroke 40 in (1016 mm)
Stick Cylinder – Bore 4.3 in (109.3 mm)
Stick Cylinder – Stroke 47 in (1193.8 mm)
Bucket Cylinder – Bore 4 in (101.6 mm)
Bucket Cylinder – Stroke 37 in (939.8 mm)

Service Refill Capacities

Cooling System 4.1 gal (15.6 L)
Fuel Tank Capacity 66 gal (249.9 L)
Final Drive – Each 0.7 gal (2.7 L)
Hydraulic Tank 25.9 gal (98.1 L)
Hydraulic System – Including Tank 41.5 gal (157.1 L)
Engine Oil 3.4 gal (12.9 L)
Swing Drive – Each 0.8 gal (2.9 L)

Drive

Maximum Drawbar Pull 20720 lb (9398.5 kg)
Travel Speed 3.4 mph (5.5 km/h)

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