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Caterpillar 312C Excavator

The Caterpillar 312C is a hydraulic excavator in Caterpillar's 12-ton class, designed for general earthmoving, trenching, utility work, and site preparation. It is equipped with a Caterpillar diesel engine, hydraulic system, and crawler undercarriage for stable operation on uneven ground. The 312C is commonly used in construction, landscaping, and municipal applications where digging depth, reach, and maneuverability are required. Typical configurations may include a standard boom, stick options, and multiple bucket sizes. As part of the Caterpillar excavator lineup, the 312C is known for service access, operator comfort, and compatibility with a range of attachments.


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Boom/Stick Excavator Option 1

Max Cutting Height28 ft (9 m)
Max Digging Depth18 ft (6 m)
Max Loading Height20 ft (6 m)
Max Reach Along Ground27 ft (8 m)
Max Vertical Wall Digging Depth16 ft (5 m)
Shipping Height of Unit9 ft (3 m)
Shipping Length of Unit25 ft (8 m)

Boom/Stick Excavator Option 2

Max Cutting Height29 ft (9 m)
Max Digging Depth20 ft (6 m)
Max Loading Height21 ft (6 m)
Max Reach Along Ground28 ft (9 m)
Max Vertical Wall Digging Depth18 ft (5 m)
Shipping Height of Unit9 ft (3 m)
Shipping Length of Unit25 ft (8 m)

Bucket

Maximum Bucket Capacity1 cu yd (1 cu m)
Minimum Bucket Capacity0 cu yd (0 cu m)
Reference Bucket Capacity1 cu yd (1 cu m)

Dimensions

Digging Depth19 ft (6 m)
Digging Reach19 ft (6 m)
Ground Clearance2 ft (0 m)
Height - Top of Cab9 ft (3 m)
Length of Track on Ground9 ft (3 m)
Tail Swing Radius7 ft (2 m)
Width to Outside of Tracks9 ft (3 m)

Engine

AspirationTurbocharged
Displacement259 cu in (4,251 cu cm)
Engine Model3046 T
Gross Power94 hp (70 kw)
Net Power90 hp (67 kw)
Power Measured @1950 rpm

Operating Specifications

Alternator Supplied Amperage55 amps
Cooling System Fluid Capacity5 gal (18 l)
Engine Oil Capacity5 gal (18 l)
Fuel Capacity66 gal (250 l)
Hydraulic Pump Flow Capacity34 gpm (127 lpm)
Hydraulic System Fluid Capacity43 gal (162 l)
Hydraulic System Relief Valve Pressure4980 psi
Swing Drive Fluid Capacity1 gal (3 l)

Swing Mechanism

Swing Speed12.9 rpm

Undercarriage

Drawbar Pull24,729 lbs (11,217 kg)
Ground Pressure4.8 psi
Max Travel Speed4 mph (6 kph)
Shoe Size24 in (61 cm)
Track Gauge7 ft (2 m)

  • Caterpillar 312Cs currently for sale
  • A Caterpillar 312C From Bergerat Monnoyeur for $25,000.00 USD
  • A 2002 Caterpillar 312C From Ritchie Bros. Auctioneers for Auction Pricing



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    39.95234 \\ -75.16379 \\ Philadelphia \\ PA \\ US \\ 19019