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

FeatureKomatsu WA320-3 SpecialWheel loaderCase 621EXTWheel loader
TypeWheel LoaderWheel Loader
Horsepower114.0 kW108.9 kW
Weight13349.2 kg13022.6 kg
Max Speed34.1 km/h38.6 km/h
Engine ModelSA6D102EFamily IV, 667TA/EDB, Tier III
No Of Cylinders66
Displacement5881.3 cc6702.3 cc
Rated Speed2350 RPM1800 RPM
Gross Power114.0 kW116.3 kW
Fuel Capacity200.2 l246.1 l
No of Forward Gears44
No of Reverse Gears43
Max Speed (Forward)34.1 km/h38.6 km/h
Max Speed (Reverse)35.1 km/h25.1 km/h
Operating Weight13349.2 kg13022.6 kg
Bucket Capacity (Heaped)2.7 m³2.3 m³
Bucket Capacity (Struck)2.3 m³2.0 m³
Bucket Width274.3 cm274.3 cm
Reach At Max Lift And Dump91.4 cm121.9 cm
Dump Clearance At Max Raise274.3 cm274.3 cm
Turning Radius609.6 cm518.2 cm
Wheelbase304.8 cm304.8 cm
Bucket Hinge Pin396.2 cm396.2 cm
Cab Height335.3 cm335.3 cm
Overall Length731.5 cm762.0 cm
Ground Clearance30.5 cm30.5 cm
Width Over Tires243.8 cm243.8 cm
Tire Size20.5-2520.5 R25
Tipping Capacity—10605.0 kg
Aspiration—Turbocharged and Aftercooled
Alternator Supplied Amperage—65 amps
Operating Voltage—24 V
Torque Speed—1300 RPM
Net Power—108.9 kW
Peak Torque—688.8 N-m
Torque Rise—33 %
Engine Oil Capacity—13.2 l
Cooling Capacity—36.0 l
Hydraulic System Capacity—147.6 l
Transmission Oil Capacity—18.9 l
Differential Front Capacity—22.3 l
Differential Rear Capacity—22.3 l
Rear Axle Oscillation—24 °
Pump type—Closed centered pressure/flow compensated
Pump Flow—171.1 LPM
Relief Pressure—248.2 bar
Raise Lift Arms—6.3 sec
Lower Lift Time—4.7 sec
Bucket Dump Time—1.7 sec
Tipping Load—10605.0 kg
Breakout Force—11022.3 kg
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