Doosan DL550-7

Doosan DL550-7

1 Doosan DL550-7

The Doosan DL550-7 wheel loader is one of the largest wheel loaders we sell. This is a real powerhouse that can do a lot of work. In addition, the new design and cabin contribute to an even higher comfort for the operator.

engine

Fashion model Scania DC13
Regulatory Compliance Stage IV
Amount of cilinders 6
Rated Gross Power at 1800 rpm (SAE J1995) 283 kW (380 hp)
Maximum gross clutch at 1300 rpm 1765 Nm
Idle (Low / Auto / High) 750 - 950 - 2200 [±20] rpm
Displacement 12.7 l
Bore x Stroke Length 130 x 160mm
Starter 24 V / 6 kW
Batteries - alternator 2 x 12 V / 200 Ah - 28 V / 100 Ah
Air filter Turbo III pre-filter according to cyclone principle with two-stage Donaldson dry filter
Cooling Cooling package with automatic reversing fan for easy radiator cleaning. Automatic rotation speed adjustment according to temperature conditions

Transmission

Type ZF 5 WG 310 + lock up
torque converter Simple Phase / Single Phase / Fixed Wheel Stator
Gears forward: 1-2-3-4-5 6.5 / 12.0 / 19.0 / 26.5 / 37.0 km/h
Reverse gears: 1-2-3 6.5 / 12.0 / 26.0 km/h
Maximum traction 31,000 kg
Maximum climbing ability 30º / 58%

shafts

HDL lock ratio 100% (front)
pendulum angle ±10º

Hydraulic System

Type Closed hydraulics with load sensing
main pump Variable displacement double axial piston pump
Maximum flow 480 l/min
Maximum pressure 315 bar
Pilot System Standard automatic functions to position the bucket for digging plus one function to stop the lift arm at the desired height by manually operating the switch
Filtration The glass fiber filter in the oil return line to the tank filters out particles from 10 microns

lifting arm

Lift arm - up 6.4 sec
Lift arm down 4.2 sec
Bake - retract 2.1 sec
Bake - deposit 1.4 s

Brakes

braking distance 11.0 m at 32.4 km/h
Number of brake discs per wheel (front / rear) 7 / 7
Accumulators 0.75 l - 30 bar

Cabin

Safety standards ROPS ISO 3471:2008, FOPS ISO 3449
Door 1
emergency exits 2
A-weighted sound pressure level at the operator, LpAd (ISO 6396:2008) According to specification: 72 dB(A), measured: 71 dB(A)
A-weighted sound power level outside the machine, LwAd (ISO 6395) According to specification: 107 dB(A), measured: 106 dB(A)

Filling capacity

Fuel tank 441 l
urea tank 60 l
Cooling system 60 l
Engine oil 45 l
front axle 62.5 l
rear axle 64 l
Hydraulic oil tank 247 l
Transmission oil 54 l

Steering system

Type Load sensing with amplification and priority valve
Steering angle 40º
Oil flow 270 l/min
operating pressure 200 bar
Control cylinders (2) Emergency steering system with electric motor-driven hydraulic pump
Bore x Rod Diameter x Stroke (mm) 110 x 60 x 465mm

Pressure Settings

Working (pump cut off) 275 ± 10 bar
Power steering at LS port 185 ± 5 bar
Power steering at steering pump 200 ± 10 bar
Pilot Control 30 + 2 bar
Charging the brake accumulator 100 ~ 160 bar
foot brake 80 ± 3 bar
Motor fan 155 ± 10 bar
Unblocking handbrake 120 ± 5 bar
Press for transmission selection 17 ± 1 bar

Doosan DL550-7

Doosan Wheel Loader

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