320D/320D L

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The D Series incorporates innovations for improved performance and versatility.


Engine Model Cat® C6.4 ACERT™ Cat® C6.4 ACERT™ Less
Net Flywheel Power 138.0 hp 103.0 kW Less
Net Power - ISO 9249 138.0 hp 103.0 kW Less
Bore 4.02 in 102.0 mm Less
Stroke 5.12 in 130.0 mm Less
Displacement 389.0 in3 6.4 L Less
Net Power - EEC 80/1269 138.0 hp 103.0 kW Less
Net Power - SAE J1349 138.0 hp 103.0 kW Less


Operating Weight 44820.0 lb 20330.0 kg Less
Operating Weight - Std. Undercarriage 44820.0 lb 20330.0 kg Less
Operating Weight - Long Undercarriage 47554.0 lb 21570.0 kg Less

Service Refill Capacities

Fuel Tank Capacity 108.0 gal 410.0 L Less
Cooling System 6.6 gal 25.0 L Less
Engine Oil 8.0 gal 30.0 L Less
Swing Drive 2.1 gal 8.0 L Less
Final Drive (each) 2.1 gal 8.0 L Less
Hydraulic System (including tank) 69.0 gal 260.0 L Less
Hydraulic Tank 32.0 gal 120.0 L Less
Hydraulic Tank (Including suction pipe) 36.0 gal 138.0 L Less

Swing Mechanism

Swing Speed 11.5 RPM 11.5 RPM Less
Swing Torque 45612.0 lb ft 61.8 kN·m Less


Maximum Drawbar Pull 46311.0 lb 206.0 kN Less
Maximum Travel Speed 3.5 mph 5.7 km/h Less

Hydraulic System

Main Implement System - Maximum Flow (2x) 54.0 gal/min 205.0 L/min Less
Max. Pressure - Equipment 5076.0 psi 35000.0 kPa Less
Max. pressure - Heavy Lift 5221.0 psi 36000.0 kPa Less
Max. Pressure - Travel 5076.0 psi 35000.0 kPa Less
Max. Pressure - Swing 3626.0 psi 25000.0 kPa Less
Pilot System - Maximum Flow 9.0 gal/min 32.4 L/min Less
Pilot System - Maximum Pressure 566.0 psi 3900.0 kPa Less
Boom Cylinder - Bore 4.7 in 120.0 mm Less
Boom Cylinder - Stroke 49.6 in 1260.0 mm Less
Mass Stick Cylinder - Bore 5.5 in 140.0 mm Less
Reach Stick Cylinder - Bore 5.5 in 140.0 mm Less
B1 Family Bucket Cylinder - Bore 4.7 in 120.0 mm Less
Mass Stick Cylinder - Stroke 59.2 in 1504.0 mm Less
Reach Stick Cylinder - Stroke 59.8 in 1518.0 mm Less
B1 Family Bucket Cylinder - Stroke 43.5 in 1104.0 mm Less
CB2 Family Bucket Cylinder - Bore 5.3 in 135.0 mm Less
CB2 Family Bucket Cylinder - Stroke 45.5 in 1156.0 mm Less

Sound Performance

Performance ANSI/SAE J1166 APR 90 ANSI/SAE J1166 APR 90 Less


Brakes SAE J1026 APR90 SAE J1026 APR90 Less
Cab/FOGS SAE J1356 FEB88 SAE J1356 FEB88 Less


Number of Shoes Each Side - Standard Undercarriage 45 45 Less
Number of Shoes (each side) - Long Undercarriage 49 49 Less
Number of Track Rollers Each Side - Standard Undercarriage 7 7 Less
Number of Track Rollers (each side) - Long Undercarriage 8 8 Less
Number of Carrier Rollers Each Side - Standard Undercarriage 2 2 Less
Number of Carrier Rollers (each side) - Long Undercarriage 2 2 Less


Transport width 125.2 in 3180.0 mm Less
Shipping Height 11.3 ft 3440.0 mm Less

C6.4 with ACERT™ Technology

The Cat® C6.4 gives the 320D exceptional power and fuel efficiency unmatched in the industry for consistently high performance in all applications.


Cat® hydraulics deliver power and precise control to keep material moving.

Operator Comfort

Caterpillar offers the most intuitive and easy to operate excavators while providing great all around visibility and exceptional operator comfort.


320D is designed to handle the most rugged operating conditions, while providing long life and value.

Booms, Sticks and Bucket Linkages

Built for Performance and long service life, Caterpillar® booms and sticks are large, welded, box-section structures with thick, multi-plate fabrications in high stress areas.

Work Tools - Attachments

The 320D has an extensive selection of work tools to optimize machine performance.


A wide variety of optional factory-installed attachments are available to enhance performance and improve job site management.

Service and Maintenance

Simplified service and maintenance features save you time and money.

Complete Customer Support

Cat® dealer services help you operate longer with lower costs.

320D/320D L Standard Equipment

  • 50 Ampere alternator
  • Base machine light (frame)
  • Horn
  • Pre-start monitoring system - checks for low fluids

Operator Environment
  • Air conditioner, heater, defroster with automatic climate control
  • AM/FM Radio with antenna and 2 speakers
  • Ashtray with 24 volt lighter
  • Beverage/cup holder
  • Bolt-on Falling object Guarding System (FOGS) capability
  • Cab Glass
  • Coat hook
  • Floor mat
  • Instrument panel and gauges
  • Joysticks, console mounted, pilot operated
  • Light, interior
  • Literature compartment
  • Monitor, full graphic color display
  • Neutral lever (lock out) for all controls
  • Polycarbonate side windows
  • Positive filtered ventilation
  • Pressurized cab
  • Seat, suspension
  • Seat belt, retractable - 76 mm (3 in)
  • Storage compartment suitable for lunch box cooler
  • Sun shade (for skylight)
  • Travel control pedals with removable hand levers
  • Windshield wiper and washer

Engine/Power Train
  • C6.4 with ACERT™ Technology
  • Automatic engine speed control with one touch low idle
  • Cooling
  • Priming pump
  • Straight line travel
  • Two-speed auto-shift travel
  • Water separator in fuel line

  • Grease lubricated track
  • Hydraulic track adjusters
  • Idler and center section track guards

Other Standard Equipment
  • Automatic swing parking brake
  • Auxiliary hydraulic valve
  • Capability of stackable valves (max of 3) for main valve
  • Capability of auxiliary circuit
  • Counterweight with lifting eyes
  • Door locks, cap locks and Caterpillar® one key security system
  • Fine swing control
  • Fully pressurized hydraulic system
  • Mirrors (frame-right, cab left)
  • S•O•SSM quick sampling valves for engine and hydraulic oil
  • Wave fin radiator
  • Wiring provision for Product Link

320D/320D L Optional Equipment

Track Motor Guard, Heavy-Duty

Swivel Guard

Front Linkage
  • Booms
  • Sticks
  • Bucket Linkage
  • Boom Lowering Control Device

  • Light, Boom - Right side
  • Lights, Cab mounted (2)
  • Power supply (12V-7 AMP)
  • Product Link (PL121SR/PL321SR
  • Pump, Electric refueling
  • Travel Alarm

  • Falling Object Guarding System (FOGS)
  • Front windshield guard
  • Heavy-duty bottom guards
  • Rubber bumpers (Side)
  • Track guiding guards
  • Vandalism guards

Operator Environment
  • Heavy Lift Circuit
  • Rain Protector
  • Rear window, secondary exit
  • Sun shade, tiltable
  • Third pedal, straight travel
  • Wiper, Lower windshield
  • Washer, windshield

Engine/Power Train
  • High ambient cooling
  • Prefilter, air
  • Starting, Cold weather package
  • Water level indicator (Fuel)

  • Standard undercarriage
  • Long undercarriage
  • Track shoes

Auxiliary Hydraulics
  • Hammer Circuit
  • Tool Control System
  • Hydraulic pin grabber quick coupler and controller
  • Lines for booms and sticks

Work Tools
  • Wide offering of buckets, tips and sidecutters