279D3 Compact Track Loader
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.
Documents
Quiet and ComfortableTest
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.
Maximum PerformanceTest
High performance power train provides maximum performance and production capability through the Electronic Torque Management system, standard two speed travel and an electronic hand/foot throttle with decel pedal capability.
Making Your Job EasierTest
Cat® “Intelligent Leveling” system provides industry leading technology, integration, and available features such as dual direction self level, work tool return to dig, and work tool positioner.
A Smooth RideTest
A standard, fully independent torsion axle suspension combined with the optional Speed Sensitive Ride Control system improves operation on rough terrain, enabling better load retention, increased productivity and greater operator comfort.
Optimized Machine CapabilityTest
Maximize machine capability and control with the available Advanced Display, providing on-screen adjustments for implement response, hystat response and creep control. Also features multi-language functionality with customizable layouts, security system and rearview camera.
Engine
| Gross Power - SAE J1995 | 55.4kW74.3HP |
|---|---|
| Net Power - SAE 1349 | 54.4kW72.9HP |
| Displacement | 3.3l203in³ |
| Bore | 94mm3.7in |
| Stroke | 120mm4.7in |
| Peak Torque - 1,500 rpm - SAE J1995 | 265N·m195ft·lbf |
| Net Power | 54.4kW72.9HP |
| 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 | 55.4kW74.3HP |
| Engine Model | Cat C3.3B DIT (turbo) |
| Net Power - ISO 9249 | 54.9kW73.7HP |
Operating Specifications
| Rated Operating Capacities - 35% Tipping Load | 1010kg2220lb |
|---|---|
| Tipping Load | 2885kg6345lb |
| Breakout Force - Tilt Cylinder | 3304kg7285lb |
| Rated Operating Capacities - 50% Tipping Load | 1445kg3170lb |
| Ground Contact Area - With 450 mm/17.7 in Track | 1.47m²2272in² |
| 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 | 1540kg3390lb |
| Ground Pressure - With 450 mm/17.7 in Track | 30.4kPa4.4psi |
Weights
| Operating Weight | 4579kg10095lb |
|---|---|
| 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 | 1630mm64.2in |
|---|---|
| Overall Length - Track | 2129mm83.8in |
| Height - Top of Cab | 2113mm83.2in |
| Ground Clearance | 226mm8.9in |
| Departure Angle | 32° |
| Maximum Dump Angle | 39° |
| Bucket Pin Height - Carry Position | 198mm7.8in |
| Turning Radius from Center - Machine Rear | 1796mm70.7in |
| Turning Radius from Center - Coupler | 1410mm55.5in |
| Maximum Overall Height | 4051mm159.5in |
| Maximum Reach - With Arms Parallel to Ground | 1373mm54in |
| Turning Radius from Center - Bucket | 2256mm88.8in |
| Bucket Pin Height - Maximum Lift | 3173mm124.9in |
| Length - With Bucket on Ground | 3714mm146.2in |
| Length - Without Bucket | 2995mm117.9in |
| Reach - Maximum Lift/Dump | 575mm22.6in |
| 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 | 2485mm97.8in |
| Vehicle Width (450 mm/17.7 in tracks) | 1981mm78in |
| Rack Back Angle - Maximum Height | 84° |
Cab
| ROPS | ISO 3471:2008 |
|---|---|
| FOPS | ISO 3449:2005 Level I |
Hydraulic System
| Hydraulic Flow - Standard - Loader Hydraulic Pressure | 23000kPa3335psi |
|---|---|
| Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Flow | 121l/min32gal/min |
| Hydraulic Flow - Standard - Loader Hydraulic Flow | 86kPa23psi |
| Hydraulic Flow - Standard - Hydraulic Power (Calculated) | 33kW44HP |
| Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Pressure | 28000kW4061HP |
| Hydraulic Flow - High Flow XPS - Hydraulic Power (Calculated) | 57kPa76HP |
Power Train
| Travel Speed - Forward or Reverse - Two Speed | 13.3km/h8.3mile/h |
|---|---|
| Travel Speed - Forward or Reverse - One Speed | 7.2km/h4.5mile/h |
Service Refill Capacities
| Hydraulic System | 52l13.7gal (US) |
|---|---|
| Hydraulic Tank | 39l10.3gal (US) |
| Fuel Tank | 105l27.7gal (US) |
| Engine Crankcase | 11l3gal (US) |
| Cooling System | 14l3.7gal (US) |
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
| 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*** | 103dB(A)103dB(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** | 83dB(A)83dB(A) |
| Note (1) | Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe. |
360° Exterior View (HTML5)
360° Interior View (HTML5)