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  Wheel Loaders

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Kubota R420 Specifications

The Kubota R420 wheel loader driveline system components: a 91.4 cu.in (1.5L) Kubota D1503-M-T-E2 3-cylinder turbocharged diesel engine with a rated power of 39.5 hp (29 kW), and hydrostatic transmission. The hydraulic system has a pump with a rated capacity of 11.1 gal/min (42.1 l/min). The system relief pressure is 3000 psi (206 bar). The Kubota R420 is equipped with a power steering system, wet disc brakes, and 12.5/70x16 or 33x12.50x15 tires. The wheel loader has a max lift height of 110.6" (2810 mm) and breakout force of 6560 lbs (2980 kg). The rated operating capacity is 2210 lbs (1005 kg), and tipping load is 4420 lbs (2010 kg).

Engine Model .................... Kubota D1503-M-T-E2
Engine Type .................... 4-stroke vertical water-cooled diesel
Number of Cylinders .................... Three
Cylinder Bore, in (mm) .................... 3.27 (83.0)
Piston Stroke, in (mm) .................... 3.64 (92.4)
Total Displacement, cu.in (L) .................... 91.4 (1.49)
Rated Engine Power, hp (kW) .................... 39.5 (29.0)
Rated Engine Speed, rpm .................... 2600
Idling Speed, rpm .................... 750-850
Aspiration Type .................... Turbocharged
Combustion Chamber .................... Spherical type
Direction of Rotation .................... Counter-clockwise
Compression Ratio .................... 23:1
Firing Order .................... 1-2-3
Fuel System .................... Indirect injection
Injection Pump .................... Bosch type mini pump
Injection Nozzle .................... Bosch throttle type
Governor Type .................... Centrifugal, mechanical
Lubricating System .................... Forced lubrication by trochoid pump
Oil Filter Type .................... Full flow cartridge, paper element
Cooling System .................... Pressurized radiator, forced circulation with water pump
Starting System .................... Electric starting with starter
Intake Valve Clearance, in (mm) .................... 0.007-0.009 (0.18-0.22)
Exhaust Valve Clearance, in (mm) .................... 0.007-0.009 (0.18-0.22)
Fuel Tank Capacity, gal (L) .................... 14.2 (54.0)
Oil Capacity, qts (L) .................... 5.9 (5.6)
Coolant Capacity, qts (L) .................... 7.4 (7.0)
Electrical System Rating, Volts .................... 12
Charging System .................... Alternator
Alternator Rating, Amps .................... 75

Transmission Type .................... Hydrostatic
Number of Forward Gears .................... Infinite
Number of Reverse Gears .................... Infinite
Maximum Forward Speed, mph (kph) .................... 12.5 (20.0)
Maximum Reverse Speed, mph (kph) .................... 12.5 (20.0)

Drive System Type .................... Four-wheel drive (4WD)
Steering Configuration .................... Articulated frame
Steering System .................... Hydrostatic power
Service Brakes Type .................... Wet disc
Front Tire Size (Std) .................... 12.5/70x16
Rear Tire Size (Std) .................... 12.5/70x16
Front Tire Size (Opt) .................... 33x12.50x15
Rear Tire Size (Opt) .................... 33x12.50x15

Hydraulic System Type .................... Open center
Hydraulic Pump Type .................... Gear
Pump Capacity, gpm (Lpm) .................... 11.1 (42.1)
System Pressure, psi (Bar) .................... 3000 (206)
Hydraulic Tank Capacity, gal (L) .................... 11.0 (42.0)
Hydraulic System Capacity, gal (L) .................... 15.8 (60.0)

Rated Operating Capacity (Straight, Cab), lbs (kg) .................... 2607 (1185)
Rated Operating Capacity (Straight, Canopy), lbs (kg) .................... 2200 (1000)
Rated Operating Capacity (Full Turn, Cab), lbs (kg) .................... 2210 (1005)
Rated Operating Capacity (Full Turn, Canopy), lbs (kg) .................... 1870 (850)
Tipping Load (Straight, Cab), lbs (kg) .................... 5215 (2370)
Tipping Load (Straight, Canopy), lbs (kg) .................... 4400 (2000)
Tipping Load (Full Turn, Cab), lbs (kg) .................... 4420 (2010)
Tipping Load (Full Turn, Canopy), lbs (kg) .................... 3740 (1700)
Lift Capacity, lbs (kg) .................... 3960 (1800)
Breakout Force, lbs (kg) .................... 6560 (2980)

Maximum Lift Height At Hinge Pin, in (mm) .................... 110.6 (2810)
Height To Top Of Cab, in (mm) .................... 101.2 (2570)
Height To Top Of Canopy, in (mm) .................... 98.8 (2510)
Length With Bucket On Ground, in (mm) .................... 176 (4470)
Width (Tread Center), in (mm) .................... 46.5 (1180)
Width (Over Tires), in (mm) .................... 59.8 (1520)
Wheel Base, in (mm) .................... 69.9 (1775)
Ground Clearance, in (mm) .................... 11 (280)
Articulation Angle, deg .................... 40
Bucket Width, in (mm) .................... 60 (1525)
Bucket Capacity, cu.ft (m3) .................... 14.1 (0.40)
Dump Angle At Full Height, deg .................... 43
Clearance With Bucket Dumped, in (mm) .................... 83.1 (2110)
Reach At Full Height, in (mm) .................... 30.4 (770)
Operating Weight (Cab), lbs (kg) .................... 7390 (3360)
Operating Weight (Canopy), lbs (kg) .................... 6690 (3040)

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Wheel Loaders, Skid Steers, and Compact Track Loaders