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Compact Track Loaders

Cat® Compact Track Loaders and Multi Terrain Loaders give you all the traction and flotation benefits of tracks. A choice of undercarriages lets you choose the machine that best fits your applications.

279D3 Compact Track Loader

  • Specification Summary

  • Gross Power - SAE J1995 55.4 kW
  • Rated Operating Capacities - 35% Tipping Load 1010 kg
  • Operating Weight 4579 kg
  • Length - Track on Ground 1630 mm

Product Details

Engine

Gross Power - SAE J1995 55.4 kW
Net Power - SAE 1349 53.6 kW
Displacement 3.3 l
Bore 94 mm
Stroke 120 mm
Net Power ISO 9249† 54.6 kW
Net Power 53.6 kW
Peak Torque - 1,600 rpm - SAE J1995 265 N·m
Engine Model Cat C3.3B DIT (turbo)
Net Power SAE 1349† 54 kW
Gross Power 55.4 kW
Net Power - ISO 9249 54.1 kW
Note †Engine meeting Brazil MAR-1 and China Nonroad Stage III emission standards emits equivalent to U.S. EPA Tier 4 Interim and is offered only for Australia/New Zealand, Brazil, China, French Polynesia, Hong Kong, Macedonia and New Caledonia.

Operating Specifications

Rated Operating Capacities - 35% Tipping Load 1010 kg
Tipping Load 2885 kg
Breakout Force - Tilt Cylinder 3304 kg
Rated Operating Capacity with Optional Counterweight 1540 kg
Rated Operating Capacities - 50% Tipping Load 1445 kg
Ground Contact Area - With 450 mm/17.7 in Track 1.47 m²
Note Operating Weight, Operating Specifications and Dimensions all based on 75 kg (165 lb) operator, all fluids, two speed, OROPS, 2036 mm (80 in) low profile bucket, 400 mm (15.7 in) tracks, dual flange front idler/single flange rear idler, standard flow hydraulics, mechanical suspension seat, no optional counterweights and manual quick coupler (unless otherwise noted).
Ground Pressure - With 450 mm/17.7 in Track 30.4 kPa

Weights

Operating Weight 4579 kg
Note Operating Weight, Operating Specifications and Dimensions all based on 75 kg (165 lb) operator, all fluids, two speed, OROPS, 2036 mm (80 in) low profile bucket, 400 mm (15.7 in) tracks, dual flange front idler/single flange rear idler, standard flow hydraulics, mechanical suspension seat, no optional counterweights and manual quick coupler (unless otherwise noted).

Dimensions

Length - Track on Ground 1630 mm
Overall Length - Track 2129 mm
Height - Top of Cab 2113 mm
Ground Clearance 226 mm
Departure Angle 32°
Maximum Dump Angle 39°
Maximum Overall Height 4051 mm
Clearance at Maximum Lift and Dump 2485 mm
Length - With Bucket on Ground 3714 mm
Turning Radius from Center - Machine Rear 1796 mm
Turning Radius from Center - Bucket 2256 mm
Bucket Pin Height - Carry Position 198 mm
Turning Radius from Center - Coupler 1410 mm
Bucket Pin Height - Maximum Lift 3173 mm
Length - Without Bucket 2995 mm
Maximum Reach - With Arms Parallel to Ground 1373 mm
Rack Back Angle - Maximum Height 84°
Vehicle Width (450 mm/17.7 in tracks) 1981 mm
Note Operating Weight, Operating Specifications and Dimensions all based on 75 kg (165 lb) operator, all fluids, two speed, OROPS, 2036 mm (80 in) low profile bucket, 400 mm (15.7 in) tracks, dual flange front idler/single flange rear idler, standard flow hydraulics, mechanical suspension seat, no optional counterweights and manual quick coupler (unless otherwise noted).
Reach - Maximum Lift/Dump 575 mm

Hydraulic System

Hydraulic Flow - Standard - Loader Hydraulic Pressure 23000 kPa
Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Flow 121 l/min
Hydraulic Flow - High Flow XPS - Hydraulic Power (Calculated) 57 kPa
Hydraulic Flow - Standard - Hydraulic Power (Calculated) 33 kW
Hydraulic Flow - Standard - Loader Hydraulic Flow 86 kPa
Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Pressure 28000 kW

Cab

ROPS ISO 3471:2008
FOPS ISO 3449:2005 Level I

Power Train

Travel Speed - Forward or Reverse - Two Speed 13.3 km/h
Travel Speed - Forward or Reverse - One Speed 7.2 km/h

Service Refill Capacities

Fuel Tank 105 l
Cooling System 14 l
Hydraulic System 52 l
Engine Crankcase 11 l
Hydraulic Tank 39 l

Air Conditioning System (if equipped)

Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.

Noise Level

Outside Cab*** 103 dB(A)
Inside Cab** 83 dB(A)
Note (1) **The declared dynamic operator sound pressure levels per ISO 6396:2008. The measurements were conducted with the cab doors and windows closed and at 70% of the maximum engine cooling fan speed. The sound level may vary at different engine cooling fan speeds.
Note (2) ***The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC.

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