312D/312D L

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Engine Model Cat® C4.2 ACERT™ Cat® C4.2 ACERT™ Less
Flywheel Power 90.0 hp 67.0 kW Less
Gross Power 97.0 hp 72.0 kW Less
SAE J1349 90.0 hp 67.0 kW Less
Bore 4.0 in 102.0 mm Less
Stroke 5.1 in 130.0 mm Less
Displacement 259.0 in3 4.25 L Less
Net Power - SAE J1349 90.0 hp 67.0 kW Less


Operating Weight 28480.0 lb 12920.0 kg Less
Operating Weight - Standard Undercarriage 28480.0 lb 12920.0 kg Less
Operating Weight - Long Undercarriage 29650.0 lb 13450.0 kg Less

Swing Mechanism

Swing Torque 22830.0 lb ft 30950.0 kN·m Less
Swing Speed 12.4 RPM 12.4 RPM Less


Maximum Drawbar Pull 25600.0 lb 114.0 kN Less
Travel Speed 3.4 mph 5.5 km/h Less

Hydraulic System

Main Implement System - Maximum Flow (2x) 33.5 gal/min 127.0 L/min Less
Maximum Pressure - Implements 4424.0 psi 30500.0 kPa Less
Maximum Pressure - Travel 3340.0 psi 35000.0 kPa Less
Maximum Pressure - Swing 3336.0 psi 23000.0 kPa Less
Pilot System - Maximum Flow 9.5 gal/min 36.0 L/min Less
Pilot System - Maximum Pressure 598.0 psi 4120.0 kPa Less
Blade System - Maximum Pressure 2990.0 psi 20600.0 kPa Less
Boom Cylinder - Bore 4.3 in 110.0 mm Less
Boom Cylinder - Stroke 40.0 in 1015.0 mm Less
Stick Cylinder - Bore 4.7 in 120.0 mm Less
Stick Cylinder - Stroke 47.1 in 1197.0 mm Less
Bucket Cylinder - Bore 3.9 in 100.0 mm Less
Bucket Cylinder - Stroke 37.0 in 939.0 mm Less

Service Refill Capacities

Fuel Tank 66.0 gal 250.0 L Less
Cooling System 4.7 gal 17.9 L Less
Engine Oil 4.6 gal 17.5 L Less
Swing Drive (each) 0.79 gal 3.0 L Less
Final Drive (each) 0.79 gal 3.0 L Less
Hydraulic System (including tank) 27.5 gal 104.0 L Less
Hydraulic Tank 23.9 gal 90.7 L Less


Cab/FOGS SAE J1356 FEB88 ISO 10262 SAE J1356 FEB88 ISO 10262 Less


Transport width 98.0 in 2490.0 mm Less
Counterweight Clearance 36.0 in 915.0 mm Less
Length to Center of Rollers 10.0 ft 3040.0 mm Less
Length to Center of Rollers - LC 10.0 ft 3.04 m Less
Length to Center of Rollers - STD 9.1 ft 2.78 m Less
Shipping Height 9.25 ft 2830.0 mm Less
Shipping Height - LC 9.3 ft 2.83 m Less
Shipping Height - STD 9.3 ft 2.83 m Less
Transport width - LC 8.5 ft 2.59 m Less
Transport width - STD 8.2 ft 2.49 m Less

Operator Station

Enhanced comfort, operation and visibility


Delivering the most work per liter/gallon of fuel consumed


Low effort and precise control for highly efficient performance


Strong, stable and easy to maneuver

Front Linkage

Reliable, durable and versatile


More options for more work


Simplified service and maintenance saves time and money

Technology Products

Advanced technologies improve productivity and simplify serviceability

Customer Support

Unmatched support makes the difference

312D/312D L Standard Equipment

Alternator, 50 amp

Automatic engine speed control

Bolt-on Falling Object Guard System (FOGS) capability

  • AM/FM radio, 24-volt
  • Ashtray with cigar lighter
  • Coat hook
  • Beverage holder
  • Economy mode
  • Horn

Language display monitor (full graphic/full color display)
  • Clock
  • Filter/fluid change information
  • Level check for hydraulic oil, engine oil and coolant
  • Warning messages

Light, interior

Literature holder

Openable front windshield

Openable skylight with sun shade

Storage compartment

Travel control pedals with removable hand levers

Door locks and cap locks with one-key security system

Light, storage box mounted (1)

Mirrors (frame and cab)

Power Train
  • Cat® C4.2 engine with ACERT™ Technology
  • 24-volt electric starter
  • Air intake heater
  • Water separator

Radial seal air filter

  • Idler section track guiding guards
  • Center section track guiding guards (for 312D L)
  • Track-type undercarriage with grease lubricated seals

312D/312D L Optional Equipment

AccuGrade™ Basic, Laser and GPS ready

Air prefilter

Auxiliary hydraulics

Auxiliary hydraulic lines from booms and sticks

Boom lowering and overload warning control device

Bucket linkage

Cab mounted working lights

Cab mounted working lights with time delay function

Cold weather start

E-Ceiling and cab avoidance

Fine swing control

Front windshield gaurd

Hand control pattern changer

Heavy-duty bottom guard

High ambient cooling system

Power supply 7A-12V

Pull down sunscreen

Rain protector

Right side boom lights

Side steel bumper

Secondary exit, rear window

Stick and boom configurations
  • 3.0 m (9'10") stick
  • 2.8 m (9'2") stick
  • 2.5 m (8'2")stick

Sun visor

Swivel guard

Vandalism protection

Water level indicator for water separator