Caterpillar 349D2

The 349D2 is built around the legendary Cat C13 ACERT™ diesel engine (12.5-liter, 6-cylinder, turbocharged inline), widely trusted across Caterpillar’s heavy equipment lineup.

• Gross Power: 301 kW (403 hp) under ISO 14396

• Net Flywheel Power: 289 kW (387 hp) under SAE J1349/ISO 9249

• Bore & Stroke: 130 mm × 157 mm

• Fuel System: Features a mechanically actuated unit-fuel-injection system with electronic controls. It delivers high injection pressure for optimum fuel economy while using fewer electronic components to simplify troubleshooting.

While the standard undercarriage version weighs 45,260–45,382 kg, the vast majority of units available in the used market are 349D2 L (long undercarriage) models.

• 349D2 L Weight: 46,520–48,185 kg (102,600–106,200 lb), depending on attachments.

• Dimensions: Offers a 5,360 mm track length for superior stability and a track gauge of 2,740 mm.

• Track Shoes: 600 mm standard width (750 mm and 800 mm options available for soft ground conditions).

The load-sensing hydraulic system is a standout feature, incorporating a hydraulic cross-sensing design that allows each pump to utilize 100% of engine power.

• Total Flow: 734 L/min (194 gpm) at 35,000 kPa (5,076 psi)

• Digging Forces: ISO bucket digging force of 267 kN (≈27.2 tonnes) | Stick digging force of 201 kN (≈20.5 tonnes).

• Speed & Pull: Swing speed of 8.7 rpm (149 kN·m torque) | Max travel speed of 4.5 km/h | Drawbar pull of 338 kN.

• Note: Regeneration circuits for the boom and stick significantly shorten cycle times and conserve fuel.

For a D‑series machine, the 349D2’s cab is spacious and functional. It is attached to the frame with viscous rubber mounts, which dampen vibrations and sound levels while enhancing operator comfort. The cab is pressurized with positive filtered airflow to resist dust intrusion — an essential feature for quarry and mining environments where dust is unavoidable.

The suspension seat offers a reclining back, upper and lower seat slide adjustments, and height and tilt adjustments to accommodate a wide range of operators. All switches are located in front of the operator for convenient access.

The full‑color LCD monitor can display information in 28 languages, making the machine suitable for international markets. The monitor provides real‑time data on machine performance, fuel consumption, diagnostic codes, and maintenance reminders. It also displays a visual check of engine oil level, hydraulic oil level, coolant level, and fuel level at startup. Operators particularly appreciate the large polycarbonate skylight, which provides upward visibility for working around rocks and high walls.

Low‑effort pilot‑operated joystick controls are designed to match the natural wrist and arm position for maximum comfort and minimum fatigue. The right and left joystick consoles are adjustable to suit individual operator preferences.

An owner who purchased sixteen 349D2s for an aluminium mining operation reported that operators consistently praised the machine. “Although the 349D2 has a larger tonnage, it feels more flexible and easier to handle than the previous Cat 336D,” he noted. “The cab is very comfortable, and the sealing and dust‑proofing effects are also very good.” After several months of use, breakdowns were extremely rare, and both operators and owner were highly satisfied [23†L5-L12].