Hitachi ZW120-6 Wheel Loader

Axle and Final Drive

Drive System Four-wheel drive system
Final Drives Heavy-duty planetary, mounted inboard
Front Fixed to the front frame
Front & rear axle Semi-floating
Oscillation angle Total 20 degrees (+10, -10)
Rear Trunnion support
Reduction and differential gear Two stage reduction with torque proportional differential

Brakes

Parking Brake Spring applied, hydraulically released, wet disc type
Service Brakes Inboard mounted fully hydraulic 4 wheel wet disc brakes. Front & rear independent brake circuit, HST (Hydro Static Transmission) system provides additional hydraulic braking capacity

Engine

Aftertreatment DOC and SCR system
Air Cleaner Two element dry type with restriction indicator
Aspiration Turbocharger and intercooled
Batteries 2 x 12 V
Bore and Stroke 3.9 in x 4.7 in (98 mm x 120 mm)
Emission Complies with EU stage IV and US EPA Tier 4 Final
Maximum rated power ISO 14396, gross 101 (74 kW) at 2,000 min (rpm)
Maximum rated power ISO 9249, net 96 (71 kW) at 2,000 min (rpm)
Maximum Torgue 400 NM at 1,600 min (rpm)
Model DEUTZ TCD3.6L4F
No. of cylinders 4
Piston Displacement 221 in (561 cm)
Type 4-cycle water-cooled, direct injection

Hydraulic System

Arm Controls Four position valve, Raise, hold, lower, float Bucket controls with automatic bucket return to-dig control
Filters Full-flow 10 micron return filter in reservoir
HST charging pump Gear type 10.4 gal/min (39.2 L/min) at 2,000 min (rpm) at 2.5 MPa (25 kgf/cm2)
Hydraulic cycle times – Bucket dump 1.6 seconds
Hydraulic cycle times – Lift arm lower 2.7 seconds
Hydraulic cycle times – Lift arm raise 6.6 seconds
Hydraulic cycle times – Total 10.9 seconds
Hydraulic cylinders – No. x Bore x Stroke Arm: 2 x 4.1 in x 28.0 in (2 x 105 mm x 710 mm) Bucket: 1 x 4.9 in x 17.5 in (1 x 125 mm x 445 mm)
Hydraulic cylinders Type Double acting type
Main pump (Load & steer) Gear type 32.0 gal/min (121 L/min) at 2,000 min-1 (rpm) at 20.6 MPa (210 kgf/cm2)
Relief pressure setting 20.6 MPa (210 kgf/cm2)
Transmission charging pump Gear type 5.9 gal/min (22 L/min) at 2,000 min (rpm) at 1.8 MPa (18 kgf/cm2

Power Train

Cooling Method Forced circulation type
Transmission Electrical-controlled 1 motor hydrostatic transmission with gear box, Gear box: Fixed gear ratio, powershift countershaft type
Travel speed Forward/Reverse – 1st 7 mph (11 kph)
Travel speed Forward/Reverse – 2nd 35 mph (56 kph)

Steering System

Cylinders Double-acting piston type
No. x Bore x Stroke 2 x 2.4 in x 15.6 in (2 x 60 mm x 395 mm)
Steering Angle Each direction 40 degrees, total 80 degrees
Type Articulated frame steering
Ask A Question