312D

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3.59% P.A. OVER 60 MONTHS Competitive Finance
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312DStandard Equipment

AUXILIARY CONTROLS AND LINES
  • Auxiliary boom lines (high pressure)
  • Auxiliary stick lines (high pressure)
  • Basic control arrangements:
  • High pressure control group for center-lock quick coupler
  • Cooling circuit for auxiliary hydraulics
  • Universal control group for quick coupler
  • Hammer return filter circuit

ELECTRICAL
  • Alarm, travel
  • Alternator, 50 A
  • Cat® battery
  • Circuit breaker
  • Warning horn (front)
  • Water level indicator
  • Working light, boom (right side)
  • Working light, storage box mounted
  • Working lights, cab mounted
  • Rearview camera

ENGINE
  • Cat® C4.2 diesel engine with ACERT™ Technology, Altitude capability to 2300 m
  • 52° C cooling capability
  • Air inlet heater for low ambient starting
  • Automatic engine speed control with push button return to idle
  • 24V electric starting
  • Cat® Extended Life Coolant
  • Radial seal air filters with double element, integrated cyclonic
  • Water separator in fuel line
  • Secondary engine shut-off switch
  • Fuel economy mode
  • Fuel filter, 2 micron
  • Radiator, waved fin with side-by-side type oil cooler

FRONT LINKAGE
  • Boom (with two working lights), Reach 4650 mm
  • Boom lowering check valve
  • Bucket linkage, B linkage with lifting eye
  • Stick, 2500 mm
  • Stick lowering check valve

GUARDS
  • Guard, bottom
  • Guards, track motor
  • Guard, swivel

OPERATOR STATION
  • Adjustable armrests
  • Air conditioner, heater and defroster with automatic climate control
  • Ashtray and 24V lighter
  • Beverage cup holder
  • Bolt-on FOGS capability
  • Converters, 7A/12V (2)
  • Floor mat, washable
  • Instrument panel and gauges with full color graphical display, start-up level checks
  • Joysticks (2) thumb wheel
  • Laminated front windshield
  • Literature compartment
  • Lunch box storage with lid
  • Mirrors, left and right
  • Neutral lever (lock-out) for all controls
  • Radial windshield wiper and washer (upper and lower)
  • Positive filtered ventilation, pressurized cab
  • Rear window, emergency exit
  • Retractable seat belt
  • ROPS cab
  • Seat, adjustable, high back, heated with air suspension
  • Sliding upper door window
  • Stationary skylight (polycarbonate)
  • Storage compartment suitable for a lunch box
  • Sunscreen for windshield and skylight
  • Travel control pedals with removable hand levers
  • Windshield 70-30 split, sliding

SHOES
  • Shoes, triple grouser, 500 mm

UNDERCARRIAGE
  • Automatic swing parking brake
  • Automatic travel parking brakes
  • Grease lubricated tracks
  • Hydraulic track adjusters
  • Idler and center section track guiding guards
  • Two-speed travel

OTHER STANDARD EQUIPMENT
  • Boom and stick drift reducing valve
  • Boom and stick regeneration circuit
  • Counterweight, 2450 kg
  • Cat® one key security system with locks for doors, cab and fuel cap
  • Cat® Data Link and capability for Cat Electronic Technician
  • Full-steel firewall between engine and hydraulic pump compartment
  • Mirrors (frame right, cab left)
  • Precleaner
  • Product Link 321
  • Reverse swing damping valve
  • Separate hydraulic filter with reusable metal tube for filter element – no drop oil filter
  • S·O·SSM quick sampling valves for engine oil, hydraulic oil and coolant

312DOptional Equipment

AccuGrade™ Basic, Laser and GPS ready

Bucket linkage

Cold weather start

Front windshield guard

Hand control pattern changer

Heavy-duty bottom guard

Rain protector

Side steel bumper

Secondary exit, rear window

Stick and boom configurations
  • • 3.0 m stick
  • • 2.8 m stick
  • • 2.5 m stick

Sun shade

Vandalism protection

Overview

Achieve high productivity and lower operating costs with the Cat® 312D Hydraulic Excavator. Unmatched versatility, improved controllability, easy operation and a comfortable, redesigned operator station help make the 312D an industry-leading performer.

Engine

Units:
Engine Model Cat® C4.2 ACERT™ Cat® C4.2 ACERT™ Less
Flywheel Power 89.9 hp 67.0 kW Less
Gross Power 96.6 hp 72.0 kW Less
Bore 4.02 in 102.0 mm Less
Stroke 5.12 in 130.0 mm Less
Displacement 259.35 in3 4.25 L Less
Net Power 89.9 hp 67.0 kW Less
Net Power – SAE J1349 89.9 hp 67.0 kW Less

Weights

Operating Weight 28925.0 lb 13120.0 kg Less
Operating Weight – Standard Undercarriage 28925.0 lb 13120.0 kg Less

Swing Mechanism

Swing Speed 12.4 RPM 12.4 RPM Less
Swing Torque 22828.0 ft-lb 30950.0 N·m Less

Drive

Maximum Drawbar Pull 25628.0 lb 114.0 kN Less
Travel Speed 3.4 mph 5.5 km/h Less

Hydraulic System

Main Implement System – Maximum Flow (2x) 33.6 gal/min 127.0 L/min Less
Maximum Pressure – Implements 4424.0 psi 30500.0 kPa Less
Maximum Pressure – Travel 5076.0 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
Boom Cylinder – Bore 4.33 in 110.0 mm Less
Boom Cylinder – Stroke 39.96 in 1015.0 mm Less
Stick Cylinder – Bore 4.72 in 120.0 mm Less
Stick Cylinder – Stroke 47.13 in 1197.0 mm Less
Bucket Cylinder – Bore 3.94 in 100.0 mm Less
Bucket Cylinder – Stroke 36.97 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 5.2 gal 19.5 L Less
Final Drive (each) 0.79 gal 3.0 L Less
Hydraulic System (including tank) 42.8 gal 162.0 L Less
Hydraulic Tank 39.6 gal 150.0 L Less
Swing Drive 0.79 gal 3.0 L Less

Standards

Cab/FOGS SAE J1356 FEB88 ISO 10262 SAE J1356 FEB88 ISO 10262 Less
Cab/ROPS ISO 12117-2:2008 ISO 12117-2:2008 Less

Sound Performance

Performance Performance Performance Less

Engine

Clean, quiet operation and superior power with ACERT™ Technology.


Hydraulics

High efficiency and performance with low effort and precise control.


Electronic Control Systems

Engine and hydraulics management for maximum performance and safety.


Operator Station

New levels of comfort, visibility and operation.


Structures

Excellent stability and maneuverability.


Linkage

Reliable and versatile.


Versatility

Combinable hydraulic and tool solutions for any job.


Environment

Building a better world while preserving the environment.


Serviceability

Simplified service and maintenance saves time and money.


Customer Support

Unmatched support makes the difference.


Optimise Jobsite Efficiency with Cat® Machine and Technology Solutions

Talk to your Cat dealer about the range of innovative machine technology and fleet management solutions including GRADE, PAYLOAD and LINK technologies. Our 3-year Equipment Protection Plan is now standard on many models* and Caterpillar is standing behind fuel efficiency with our Fuel Edge Program. Plus your Cat dealer can offer competitive finance rates with Caterpillar Financial Australia. 

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