Compact Track Loaders

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Compact Track Loaders 279D3

Comfortable. Performance. Smart.

The Cat® 279D3 Compact Track Loader, with its radial lift design, delivers impressive mid-lift reach and excellent digging performance with outstanding drawbar power. Its standard, suspended undercarriage system provides superior traction, flotation, stability and speed to work in a wide range of applications and underfoot conditions.

Gross Power - SAE J1995

55.4 kW

Rated Operating Capacities - 35% Tipping Load

1010 kg

Operating Weight

4579 kg

FEATURES AT A GLANCE

  • Quiet and Comfortable
  • Maximum Performance
  • Making Your Job Easier
  • A Smooth Ride
  • Optimized Machine Capability
The industry leading sealed and pressurized cab option provides the operator with a cleaner and quieter operating environment with excellent work tool visibility. Continuing the industry leading trend, the D3 Series also includes as standard, seat mounted adjustable joystick controls for operator comfort.

PRODUCT SPECIFICATIONS FOR Compact Track Loaders 279D3

Engine

Gross Power - SAE J1995 55.4 kW
Net Power - SAE 1349 54.4 kW
Displacement 3.3 l
Bore 94 mm
Stroke 120 mm
Peak Torque - 1,500 rpm - SAE J1995 265 N·m
Net Power 54.4 kW
Note Net power advertised is the power available at the flywheel when the engine is equipped with alternator, air cleaner, muffler/aftertreatment and cooling fan.
Gross Power 55.4 kW
Engine Model Cat C3.3B DIT (turbo)
Net Power - ISO 9249 54.9 kW
Gross Power - SAE J1995
55.4 kW
Net Power - SAE 1349
54.4 kW
Displacement
3.3 l
Bore
94 mm
Stroke
120 mm
Peak Torque - 1,500 rpm - SAE J1995
265 N·m
Net Power
54.4 kW
Note
Net power advertised is the power available at the flywheel when the engine is equipped with alternator, air cleaner, muffler/aftertreatment and cooling fan.
Gross Power
55.4 kW
Engine Model
Cat C3.3B DIT (turbo)
Net Power - ISO 9249
54.9 kW

Operating Specifications

Rated Operating Capacities - 35% Tipping Load 1010 kg
Tipping Load 2885 kg
Breakout Force - Tilt Cylinder 3304 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, 450 mm (17.7 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).
Rated Operating Capacity with Optional Counterweight 1540 kg
Ground Pressure - With 450 mm/17.7 in Track 30.4 kPa
Rated Operating Capacities - 35% Tipping Load
1010 kg
Tipping Load
2885 kg
Breakout Force - Tilt Cylinder
3304 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, 450 mm (17.7 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).
Rated Operating Capacity with Optional Counterweight
1540 kg
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, 450 mm (17.7 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).
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, 450 mm (17.7 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°
Bucket Pin Height - Carry Position 198 mm
Turning Radius from Center - Machine Rear 1796 mm
Turning Radius from Center - Coupler 1410 mm
Maximum Overall Height 4051 mm
Maximum Reach - With Arms Parallel to Ground 1373 mm
Turning Radius from Center - Bucket 2256 mm
Bucket Pin Height - Maximum Lift 3173 mm
Length - With Bucket on Ground 3714 mm
Length - Without Bucket 2995 mm
Reach - Maximum Lift/Dump 575 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, 450 mm (17.7 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).
Clearance at Maximum Lift and Dump 2485 mm
Vehicle Width (450 mm/17.7 in tracks) 1981 mm
Rack Back Angle - Maximum Height 84°
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°
Bucket Pin Height - Carry Position
198 mm
Turning Radius from Center - Machine Rear
1796 mm
Turning Radius from Center - Coupler
1410 mm
Maximum Overall Height
4051 mm
Maximum Reach - With Arms Parallel to Ground
1373 mm
Turning Radius from Center - Bucket
2256 mm
Bucket Pin Height - Maximum Lift
3173 mm
Length - With Bucket on Ground
3714 mm
Length - Without Bucket
2995 mm
Reach - Maximum Lift/Dump
575 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, 450 mm (17.7 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).
Clearance at Maximum Lift and Dump
2485 mm
Vehicle Width (450 mm/17.7 in tracks)
1981 mm
Rack Back Angle - Maximum Height
84°

Hydraulic System

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

Cab

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

Hydraulic System 52 l
Hydraulic Tank 39 l
Fuel Tank 105 l
Engine Crankcase 11 l
Cooling System 14 l
Hydraulic System
52 l
Hydraulic Tank
39 l
Fuel Tank
105 l
Engine Crankcase
11 l
Cooling System
14 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 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.

Noise Level

Note (2) **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.
Outside Cab*** 103 dB(A)
Note (3) ***The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC.
Inside Cab** 83 dB(A)
Note (1) Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.
Note (2)
**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.
Outside Cab***
103 dB(A)
Note (3)
***The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC.
Inside Cab**
83 dB(A)
Note (1)
Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.

SEE HOW CAT Compact Track Loaders 279D3 COMPARES AGAINST FREQUENTLY COMPARED PRODUCTS.

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259D3

Gross Power - SAE J1995-55.4 kW

Rated Operating Capacities - 35% Tipping Load-915 kg

Operating Weight-4076 kg


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Gross Power - SAE J1995-55.4 kW

Rated Operating Capacities - 35% Tipping Load-1315 kg

Operating Weight-4848 kg


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Gross Power - SAE J1995-50.1 kW

Rated Operating Capacities - 35% Tipping Load-695 kg

Operating Weight-3372 kg


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Gross Power - SAE J1995-55.4 kW

Rated Operating Capacities - 35% Tipping Load-915 kg

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Gross Power - SAE J1995-55.4 kW

Rated Operating Capacities - 35% Tipping Load-1315 kg

Operating Weight-4848 kg


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Gross Power - SAE J1995-50.1 kW

Rated Operating Capacities - 35% Tipping Load-695 kg

Operating Weight-3372 kg


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