312D2/312D2 L

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Overview

Achieve high productivity and lower operating costs with the Cat 312D/D L Series 2 hydraulic excavator. Unmatched versatility, improved controllability, easy operation, and a comfortable, redesigned operator station help make the 312D/D L Series 2 an industry-leading performer.

Engine

Units:
Engine Model 3054C 3054C Less
Flywheel Power 90.0 hp 67.0 kW Less
Bore 4.13 in 105.0 mm Less
Stroke 5.0 in 127.0 mm Less
Displacement 269.0 in3 4.4 L Less
Engine Power (ISO 14396) 94.0 hp 70.0 kW Less
Net Power (SAE J1349/ISO 9249) 90.0 hp 67.0 kW Less
Net Power - ISO 14396 94.0 hp 70.0 kW Less

Weights

Operating Weight 30640.0 lb 13900.0 kg Less
Operating Weight - Long Undercarriage 13 200 kg-13 900 kg (29,100 lb-30,640 lb) 13 200 kg-13 900 kg (29,100 lb-30,640 lb) Less
Operating Weight - Long Undercarriage - Maximum Operating Weight** 30640.0 lb 13900.0 kg Less
Operating Weight - Long Undercarriage - Minimum Operating Weight* 29100.0 lb 13200.0 kg Less
Operating Weight - Standard Undercarriage - Maximum Operating Weight** 29980.0 lb 13600.0 kg Less
Operating Weight - Standard Undercarriage - Minimum Operating Weight* 28440.0 lb 12900.0 kg Less
Operating Weight - Standard Undercarriage* 12 900 kg-13 600 kg (28,440 lb-29,980 lb) 12 900 kg-13 600 kg (28,440 lb-29,980 lb) Less

Swing Mechanism

Swing Torque 22791.0 lb ft 30.9 kN·m Less
Swing Speed 12.2 RPM 12.2 RPM Less

Drive

Maximum Drawbar Pull 25630.0 lb 114.0 kN Less
Maximum Travel Speed 3.5 mph 5.6 km/h Less

Hydraulic System

Maximum Pressure - Travel 5080.0 psi 35000.0 kPa Less
Maximum Pressure - Swing 3340.0 psi 23000.0 kPa Less
Pilot System - Maximum Pressure 600.0 psi 4120.0 kPa Less
Boom Cylinder - Bore 4.0 in 110.0 mm Less
Boom Cylinder - Stroke 40.0 in 1015.0 mm Less
Stick Cylinder - Bore 5.0 in 120.0 mm Less
Stick Cylinder - Stroke 47.0 in 1197.0 mm Less
Bucket Cylinder - Bore 4.0 in 100.0 mm Less
Bucket Cylinder - Stroke 37.0 in 939.0 mm Less
Main System - Maximum Flow (Total) 67.0 gal/min 254.0 L/min Less
Maximum Pressure - Equipment 4420.0 psi 30500.0 kPa Less
Pilot System - Maximum Flow 21.9 L/min (1,340 in3/min) 21.9 L/min (1,340 in3/min) Less
Swing System - Maximum Flow 34.0 gal/min 127.0 L/min Less

Service Refill Capacities

Cooling System 4.7 gal 17.88 L Less
Final Drive (each) 0.8 gal 3.0 L Less
Hydraulic System (including tank) 27.5 gal 104.0 L Less
Hydraulic Tank 24.0 gal 90.6 L Less
Engine Oil (with filter) 4.2 gal 16.0 L Less
Fuel Tank Capacity 66.0 gal 250.0 L Less
Swing Drive 0.8 gal 3.0 L Less

Operator Station

Enhance your comfort, operation and visibility.


Engine

A powerful engine with excellent reliability and low fuel consumption delivering more while boosting your bottom line.


Hydraulics

Efficient hydraulic system with low effort joysticks provides precise control regardless of your application.


Undercarriage and Structures

Strong and durable, all you expect from Cat Excavators.


Front Linkage

Reliable and durable meeting all your versatility needs.


Work Tools

Dig, hammer, rip, and cut with confidence.


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.


312D2/312D2 L Standard Equipment

ENGINE
  • Diesel engine - Cat 3054C with mechanical governor: - 2300 m (7,545 ft) altitude capability - 50 amp alternator, air intake heater - Tier 2 emission package
  • 10 micron fuel filter
  • 4 micron fuel pre-filter
  • One touch low idle with AEC
  • Remote engine oil filter
  • Radial seal air filter, double element
  • Two speed travel
  • Water separator in fuel line with indicator
  • Waved fin radiator with side by side type oil cooler
  • Fix type A/C condenser
  • 43° C (109° F) High ambient cooling
  • Meets the U.S. EPA Tier 2 and EU Stage II regulations
  • Economy mode

CAB
  • Bolt-on FOGS capability
  • Openable front windshield with assist device
  • Pillar mounted upper windshield wiper and washer
  • Front windshield glass split by 70/30
  • Cab sliding upper door window
  • Rear window, emergency exit
  • Removable lower windshield with in cab storage bracket
  • Openable skylight/metal hatch
  • Interior lighting
  • Standard joystick
  • Laminated front upper windshield
  • Seat high back, mechanical suspension with head rest
  • Seat belt, retractable, 50 mm (2")
  • Floor mat
  • Bi-level air conditioner (auto) with defroster
  • Windshield washer
  • Coat hook
  • Ashtray and lighter
  • Beverage holder
  • Literature holder
  • Utility space for magazine
  • Radio mounting
  • Mounting for two stereo speakers
  • Antenna flexible type
  • Storage compartment suitable for lunch box
  • Monitor: - Language display - Full graphic and full color display - Warning information - Filter/fluid change information - Machine condition - Error code and tool mode setting information - Full time clock on monitor
  • Positive filtered ventilation
  • Seat integrated control joystick
  • Adjustable armrest
  • Adjustable console
  • Neutral lever (lock out) for all controls
  • Travel control pedals with removable hand levers
  • Capability of installing two additional pedals

ELECTRICAL
  • Circuit breaker
  • Cat battery

HYDRAULIC
  • Hydraulic main pump
  • High performance hydraulic return filter
  • Regeneration control for boom and stick
  • Boom lowering device for back up
  • Boom drift reducing valve
  • Stick drift reducing valve
  • Reverse swing damping valve
  • Automatic swing parking brake
  • Auxiliary hydraulic valve
  • Capability of stackable valves for main valve
  • Capability of auxiliary circuit

SECURITY
  • Cat one key security system
  • Signaling/warning horn
  • Mirrors, rearview (frame - right, cab - left)
  • Secondary engine shutoff switch
  • Door locks
  • Cap locks on fuel and hydraulic tanks
  • Lockable external tool/storage box
  • Rearview camera-ready

LIGHTS
  • Halogen boom light (left side)
  • Exterior lights integrated into storage box

UNDERCARRIAGE
  • Grease lubricated track (GLT2)
  • Idler section track guiding guard
  • Towing eye on base frame
  • Standard idler tension spring
  • Guard, standard bottom

312D2/312D2 L Optional Equipment

ENGINE
  • Cold weather batteries, -25° C (-13° F)
  • Air precleaner
  • 52° C (126° F) High ambient cooling

HYDRAULIC
  • Combined circuit
  • Combined circuit with medium pressure
  • Center-Lock quick coupler lines and control
  • Joystick with modulation SW
  • Boom and Stick high pressure, medium pressure and quick couple line options
  • Control pattern quick-changer, four way

CAB
  • Seat with seat heater, high back, air suspension with head rest
  • Pull-down sunscreen
  • 12V-10A power supply with two cigar lighter type sockets

UNDERCARRIAGE
  • 500 mm (20") triple grouser shoes
  • 600 mm (24") triple grouser shoes
  • 700 mm (28") triple grouser shoes
  • 770 mm (30") triple grouser shoes

COUNTERWEIGHT
  • Counterweight without lifting eye (2450 kg/5,400 lb)
  • Counterweight without lifting eye (2650 kg/5,840 lb)

FRONT LINKAGE
  • Boom, 4.65 m (15'3")
  • Stick, 2.5 m (8'2")
  • Stick, 3.0 m (9'10")
  • Bucket linkage
  • Quick coupler

LIGHTS
  • Cab lights
  • Halogen boom light (right side)

SECURITY
  • Travel alarm
  • Rearview camera and right side mirrors
  • Cab mirror

TECHNOLOGY
  • Product Link, Satellite or Cellular

GUARDS
  • FOGS (bolt on)
  • Guard, heavy duty bottom
  • Swivel guard

BLADES
  • Blade, 2500 mm (8'2") with replaceable cutting edge
  • Blade, 2600 mm (8'6") with replaceable cutting edge

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