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Caterpillar 311B Excavator

The Caterpillar 311B Excavator boasts impressive performance and capabilities ideal for various excavation tasks. With options for different boom/stick configurations, this machine offers exceptional cutting height, digging depth, loading height, reach along the ground, and vertical wall digging depth. Equipped with a powerful engine, efficient hydraulic system, and a spacious cab for operator comfort, the 311B ensures productivity and reliability on job sites. Whether tackling construction projects or industrial jobs, this excavator delivers the power and precision required to get the job done efficiently.


See all Caterpillar 311Bs for sale

General Specifications

Boom/Stick Excavator Option 1

Max Cutting Height25 ft (8 m)
Max Digging Depth16 ft (5 m)
Max Loading Height17 ft (5 m)
Max Reach Along Ground24 ft (7 m)
Max Vertical Wall Digging Depth14 ft (4 m)

Boom/Stick Excavator Option 2

Max Cutting Height26 ft (8 m)
Max Digging Depth17 ft (5 m)
Max Loading Height18 ft (5 m)
Max Reach Along Ground25 ft (8 m)
Max Vertical Wall Digging Depth15 ft (4 m)
Shipping Height of Unit9 ft (3 m)
Shipping Length of Unit24 ft (7 m)

Boom/Stick Excavator Option 3

Max Cutting Height27 ft (8 m)
Max Digging Depth18 ft (6 m)
Max Loading Height19 ft (6 m)
Max Reach Along Ground27 ft (8 m)
Max Vertical Wall Digging Depth16 ft (5 m)
Shipping Height of Unit9 ft (3 m)
Shipping Length of Unit24 ft (7 m)

Bucket

Maximum Bucket Capacity1 cu yd (1 cu m)
Minimum Bucket Capacity1 cu yd (0 cu m)
Reference Bucket Capacity1 cu yd (0 cu m)

Dimensions

Ground Clearance2 ft (0 m)
Height - Top of Cab9 ft (3 m)
Length of Track on Ground9 ft (3 m)
Removal Counterweight Clearance3 ft (1 m)
Tail Swing Radius7 ft (2 m)
Width to Outside of Tracks8 ft (2 m)

DRIVE SYSTEM

Maximum Drawbar Pull20,720 lbs (9,398 kg)
Travel Speed3 mph (5 kph)

Engine

AspirationTurbocharged
Bore4 in (10 cm)
Displacement259 cu in (4,244 cu cm)
Engine ModelCat 3064T
Flywheel Power79 hp (59 kw)
Gross Power85 hp (63 kw)
ISO 924979 hp (59 kw)
Net Power79 hp (59 kw)
Power Measured @1800 rpm
SAE J134978 hp (58 kw)
Stroke5 in (13 cm)

Hydraulic System

Boom Cylinder - Bore4 in (10 cm)
Boom Cylinder - Stroke40 in (102 cm)
Bucket Cylinder - Bore4 in (10 cm)
Bucket Cylinder - Stroke37 in (94 cm)
Main Implement System - Maximum Flow (2x)28 gpm (106 lpm)
Maximum Pressure - Implements4340 psi
Maximum Pressure - Swing3340 psi
Maximum Pressure - Travel4980 psi
Stick Cylinder - Bore4 in (11 cm)
Stick Cylinder - Stroke47 in (119 cm)

Operating Specifications

Alternator Supplied Amperage50 amps
Cooling System Fluid Capacity4 gal (16 l)
Engine Oil Capacity4 gal (13 l)
Fuel Capacity66 gal (250 l)
Hydraulic Pump Flow Capacity57 gpm (216 lpm)
Hydraulic System Fluid Capacity42 gal (157 l)
Hydraulic System Relief Valve Pressure4980 psi
Operating Voltage24 volts
Operating Weight24,527 lbs (11,125 kg)
Swing Drive Fluid Capacity1 gal (3 l)

Service Refill Capacities

Cooling System4 gal (16 l)
Engine Oil3 gal (13 l)
Final Drive - Each1 gal (3 l)
Fuel Tank66 gal (250 l)
Hydraulic System - Including Tank42 gal (157 l)
Hydraulic Tank26 gal (98 l)
Swing Drive - Each1 gal (3 l)

Swing Mechanism

Swing Speed10.8 rpm

Undercarriage

Drawbar Pull20,720 lbs (9,398 kg)
Ground Pressure5.6 psi
Max Travel Speed4 mph (6 kph)
Shoe Size20 in (50 cm)
Track Gauge7 ft (2 m)

Weights

Operating Weight27,680 lbs (12,555 kg)

  • Caterpillar 311Bs currently for sale
  • A 1998 Caterpillar 311B From 4M Iron LLC for $44,900.00 USD
  • A 1996 Caterpillar 311B From Clark Heavy Equipment for $32,500.00 USD