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312D

Small Excavators

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.

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Engine Model Cat® C4.2 ACERT™
Flywheel Power 67 kW
Gross Power 72 kW
Bore 102 mm
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312D
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FEATURES & BENEFITS

Engine

PerformanceThe Cat® C4.2 engine with ACERT™ Technology offers more engine power and runs at lower speeds for better fuel efficiency and reduced wear.Automatic Engine Cont... Read more

Hydraulics

Outstanding PerformanceWith 35 kPa hydraulic pressure for additional lift, swing torque and breakout forces, the 312D hydraulic system is designed for high efficiency and... Read more

Electronic Control Systems

Monitor Display ScreenThe full-color Liquid Crystal Display (LCD) monitor provides machine information. The master caution lamp blinks ON and OFF when one of the followin... Read more

Operator Station

The spacious, quiet and comfortable operator station assures high productivity during a long work day. Switches, dials and controls are conveniently located within easy r... Read more

Structures

Caterpillar uses advanced engineering and software to analyze all structures, creating a durable, reliable machine for the toughest applications. More than 70 percent of... Read more

Linkage

Built for performance and long service life, Cat® booms and sticks are welded, box-section structures with thick multi-plate, high strength steel fabrications. Read more

Versatility

Work ToolsCat® Work Tools are designed to function as an integral part of your excavator and provide the best possible performance in your particular application. All wor... Read more

Environment

EmissionsThe Cat® C4.2 with ACERT™ Technology introduces a series of evolutionary, incremental improvements that provide breakthrough engine technology built on systems a... Read more

Serviceability

Extended Service Intervals312D service and maintenance intervals have been extended to reduce machine service time and increase machine availability.Air Filter Compartmen... Read more

SPECIFICATIONS FOR 312D

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Engine
Engine Model Cat® C4.2 ACERT™
Flywheel Power 67 kW
Gross Power 72 kW
Bore 102 mm
Stroke 130 mm
Displacement 4.25 l
Net Power - SAE J1349 67 kW
Net Power 67 kW
Weights
Operating Weight 13120 kg
Operating Weight - Standard Undercarriage 13120 kg
Swing Mechanism
Swing Speed 12.4 r/min
Swing Torque 30950 N·m
Drive
Maximum Drawbar Pull 114 kN
Travel Speed 5.5 km/h
Hydraulic System
Main Implement System - Maximum Flow (2x) 127 l/min
Maximum Pressure - Implements 30500 kPa
Maximum Pressure - Travel 35000 kPa
Maximum Pressure - Swing 23000 kPa
Pilot System - Maximum Flow 36 l/min
Pilot System - Maximum Pressure 4120 kPa
Boom Cylinder - Bore 110 mm
Boom Cylinder - Stroke 1015 mm
Stick Cylinder - Bore 120 mm
Stick Cylinder - Stroke 1197 mm
Bucket Cylinder - Bore 100 mm
Bucket Cylinder - Stroke 939 mm
Service Refill Capacities
Fuel Tank 250 l
Cooling System 17.9 l
Engine Oil 19.5 l
Final Drive - Each 3 l
Hydraulic System - Including Tank 162 l
Hydraulic Tank 150 l
Swing Drive 3 l
Standards
Cab/FOGS SAE J1356 FEB88 ISO 10262
Cab - ROPS ISO 12117-2:2008
Sound Performance
Performance Performance

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ISO 9249 41 kW
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Engine Model Cat 3064T
Flywheel Power 59 kW
Gross Power 63 kW
ISO 9249 59 kW
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319D L/319D LN

Engine Model Cat® C4.2 ACERT™
Flywheel Power 93 kW
Gross Power 98 kW
ISO 9249 93 kW
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313F L

Engine Model C4.4 ACERT
Flywheel Power 68.5 kW
Bore 105 mm
Stroke 127 mm
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312D2 GC

Engine Model 3054C
Flywheel Power 56 kW
Bore 105 mm
Stroke 127 mm
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312D/312D L

Model Engine Cat® C4.2 ACERT™
Daya Flywheel 67 kW
Daya Kotor 72 kW
SAE J1349 67 kW
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313F L GC

Engine Power - ISO 9249 52 kW
Engine Model C3.4B
Engine Power - ISO 14396 55 kW
Bore 99 mm
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Engine Power - ISO 9249 77.3 kW
Engine Model C3.6
Engine Power - ISO 14396 82 kW
Bore 98 mm
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of

related attachment

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General Duty

General Duty Bucket 1000 mm (39 in): 591-0062
General Duty

General Duty Bucket 1050 mm (42 in): 594-7618
Hammers

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General Duty Bucket 450 mm (18 in): 571-2851

How to buy

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