312D / 312D L

< Back

Financing & Insurance
See our Offers
View Product Downloads
Yes, I would like to receive future marketing communications (such as email) from Caterpillar Inc., its affiliates and subsidiaries worldwide and the Caterpillar dealer network. Regardless of whether you decide to receive these marketing communications, Caterpillar will continue to send service/transactional messages, including those that have to do with any accounts that you may have with us.


312D / 312D L Hydraulic Excavators


Engine Model C4.2 ACERT C4.2 ACERT Less
Flywheel Power 91.0 hp 67.0 kW Less
Gross Power 98.0 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


Operating Weight 29696.0 lb 13470.0 kg Less
Operating Weight – Long Undercarriage 29696.0 lb 13470.0 kg Less

Swing Mechanism

Swing Torque 22864.43 lb ft 31.0 kN·m Less
Swing Speed 12.4 RPM 12.4 RPM Less


Maximum Drawbar Pull 25628.21 lb 114.0 kN Less
Maximum Travel Speed 3.42 mph 5.5 km/h Less

Hydraulic System

Main Implement System – Maximum Flow (2x) 33.55 gal/min 127.0 L/min Less
Maximum Pressure – Implements 44.24 psi 305.0 kPa Less
Maximum Pressure – Travel 50.76 psi 350.0 kPa Less
Maximum Pressure – Swing 33.36 psi 230.0 kPa Less
Pilot System – Maximum Flow 5.81 gal/min 22.0 L/min Less
Pilot System – Maximum Pressure 5.95 psi 41.0 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 66.04 gal 250.0 L Less
Cooling System 4.76 gal 18.0 L Less
Engine Oil 5.28 gal 20.0 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) 42.8 gal 162.0 L Less
Hydraulic Tank 39.63 gal 150.0 L Less

Operator Station

Enhanced comfort, operation and visibility


A clean, quiet and powerful engine helps to deliver the most work per liter of fuel consumed.


Low effort and precise control for highly efficient performance.

Undercarriage and Structures

Strong, stable and easy to manoeuvre.

Front Linkage

Reliable, durable and versatile.


More options for more work.


Simplified service and maintenance saves time and money.

Product Link

Efficient feature to follow and support your machine anywhere.

Customer Support

Unmatched support makes the difference.