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Home / Wheel Loaders / Kubota Wheel Loaders / Kubota R520S

Kubota R520S Specifications

The Kubota R520S wheel loader is powered by Kubota V2203-M-E3 vertical in-line 4-cylinder direct injection liquid-cooled diesel engine with a rated power of 45 hp (33.3 kW) at 2600 rpm. The Kubota R520S is equipped with a hydrostatic transmission, power steering system, wet disc brakes, and 15.5/60x18 or 12.5/80x18 tires. The hydraulic system has a pump with fluid flow rate of 15.4 gpm (58.3 lpm). The hydraulic pressure is 3000 psi (206 bar). The wheel loader has a rated operating capacity of 2200 lbs (1000 kg) and tipping load of 4400 lbs (2000 kg). The maximum lift height is 130.3" (3310 mm) to hinge pin, and breakout force is 6560 lbs (3375 kg).

Engine Specs

Engine Model .................... Kubota V2203-M-E3
Engine Type .................... Vertical water-cooled 4-cylinder diesel
Number of Cylinders .................... Four
Displacement, cu.in (L) .................... 134.1 (2.19)
Cylinder Bore, in (mm) .................... 3.43 (87.0)
Piston Stroke, in (mm) .................... 3.64 (92.4)
Aspiration Type .................... Naturally aspirated
Rated Engine Power, hp (kW) .................... 45.0 (33.3)
Rated Engine Speed, rpm .................... 2600
Idling Speed, rpm .................... 1075-3000
Compression Ratio .................... 22.6:1
Firing Order .................... 1-3-4-2
Fuel System .................... Direct injection
Governor Type .................... Centrifugal, mechanical
Lubricating System .................... Pressure lubrication with filter
Cooling System .................... Pressurized with radiator
Combustion Chamber .................... Spherical type (E-TVCS)
Fuel Tank Capacity, gal (L) .................... 14.2 (54.0)
Oil Capacity, qts (L) .................... 9.2 (8.7)
Coolant Capacity, qts (L) .................... 12.0 (11.3)
Electrical System Rating, Volts .................... 12
Charging System .................... Alternator
Alternator Rating, Amps .................... 90

Transmission

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)

Wheels and Tires

Drive System Type .................... Four-wheel drive (4WD)
Steering Configuration .................... Articulated frame
Steering System .................... Hydrostatic power
Service Brakes Type .................... Wet disc
Front Tire Size (Std) .................... 15.5/60x18
Rear Tire Size (Std) .................... 15.5/60x18
Front Tire Size (Opt) .................... 12.5/80x18
Rear Tire Size (Opt) .................... 12.5/80x18

Hydraulic System

Hydraulic System Type .................... Open center
Hydraulic Pump Type .................... Gear
Pump Capacity, gpm (Lpm) .................... 15.4 (58.3)
System Pressure, psi (Bar) .................... 3000 (206)
Hydraulic Tank Capacity, gal (L) .................... 11.0 (42.0)
Hydraulic System Capacity, gal (L) .................... 16.3 (62.0)

Loader Performance

Rated Operating Capacity (Straight, Canopy), lbs (kg) .................... 2595 (1180)
Rated Operating Capacity (Full Turn, Canopy), lbs (kg) .................... 2200 (1000)
Tipping Load (Straight, Canopy), lbs (kg) .................... 5190 (2360)
Tipping Load (Full Turn, Canopy), lbs (kg) .................... 4400 (2000)
Lift Capacity, lbs (kg) .................... 5215 (2370)
Breakout Force, lbs (kg) .................... 6560 (3375)

Dimensions and Weight

Maximum Working Height, in (mm) .................... 165.4 (4200)
Maximum Lift Height At Hinge Pin, in (mm) .................... 130.3 (3310)
Height To Top Of Canopy, in (mm) .................... 101.6 (2580)
Length With Bucket On Ground, in (mm) .................... 184.4 (4685)
Width (Tread Center), in (mm) .................... 53.5 (1360)
Width (Over Tires), in (mm) .................... 69.3 (1760)
Wheel Base, in (mm) .................... 76.8 (1950)
Ground Clearance, in (mm) .................... 12.8 (325)
Articulation Angle, deg .................... 40
Bucket Width, in (mm) .................... 72 (1830)
Bucket Capacity, cu.ft (m3) .................... 20.2 (0.57)
Dump Angle At Full Height, deg .................... 43
Clearance With Bucket Dumped, in (mm) .................... 105.1 (2670)
Reach At Full Height, in (mm) .................... 33.8 (860)
Turning Circle (w/Bucket), in (mm) .................... 155.9 (3960)
Operating Weight (Canopy), lbs (kg) .................... 8360 (3800)

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