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Manufacturer-sourced values side by side. No performance equivalence or ranking is applied across different machine classes.

FeatureCase W20CWheel loaderCase 521DWheel loader
TypeWheel LoaderWheel Loader
Horsepower82.0 kW82.0 kW
Max Speed37.5 km/h37.7 km/h
Engine ModelA504BDFamily III 445TA/M2, Tier II
No Of Cylinders64
Displacement8260.7 cc4506.5 cc
Alternator Supplied Amperage40 amps70 amps
Operating Voltage24 V24 V
Rated Speed2200 RPM2000 RPM
Torque Speed1400 RPM1400 RPM
Net Power82.0 kW82.0 kW
Gross Power91.7 kW88.7 kW
Stroke12.7 cm—
Bore11.9 cm—
Fuel Capacity189.3 l189.3 l
Engine Oil Capacity16.3 l12.9 l
Cooling Capacity49.2 l22.0 l
Hydraulic System Capacity117.3 l113.6 l
Transmission Oil Capacity30.3 l18.9 l
Differential Front Capacity13.2 l22.3 l
Differential Rear Capacity13.2 l22.3 l
Transmission TypePower shift—
No of Forward Gears44
No of Reverse Gears23
Max Speed (Forward)37.5 km/h37.7 km/h
Max Speed (Reverse)15.6 km/h24.5 km/h
Pump typeDual-StageClosed centered pressure/flow compensated
Pump Flow182.1 LPM134.0 LPM
Raise Lift Arms6.1 sec5.6 sec
Lower Lift Time3.5 sec3.7 sec
Bucket Dump Time1.7 sec1.1 sec
Bucket Capacity (Heaped)1.4 m³1.9 m³
Bucket Capacity (Struck)1.1 m³1.6 m³
Reach At Max Lift And Dump91.4 cm91.4 cm
Wheelbase274.3 cm274.3 cm
Bucket Hinge Pin365.8 cm365.8 cm
Cab Height304.8 cm304.8 cm
Overall Length609.6 cm670.6 cm
Ground Clearance30.5 cm30.5 cm
Width Over Tires243.8 cm243.8 cm
Weight—10028.9 kg
Tipping Capacity—8355.2 kg
Aspiration—Turbocharged and Aftercooled
Peak Torque—455.6 N-m
Torque Rise—14 %
Rear Axle Oscillation—24 °
Relief Pressure—189.6 bar
Operating Weight—10028.9 kg
Tipping Load—8355.2 kg
Bucket Width—243.8 cm
Breakout Force—9502.8 kg
Dump Clearance At Max Raise—274.3 cm
Turning Radius—487.7 cm
Tire Size—17.5 x25
Sourceheavyequipments.net archive (imported 2026-10)heavyequipments.net archive (imported 2026-10)
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Side-by-side specification comparisons generated from the manufacturer-sourced model files. · 7,051