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

FeatureKomatsu D21AG-7EDozerFurukawa FD40-1Dozer
TypeCrawler DozerCrawler Dozer
Horsepower29.8 kW29.8 kW
Operating Weight3720.0 kg3930.0 kg
Engine ManufacturerKomatsuIsuzu
Engine Model4 D94EA-4JG2
Gross Power29.8 kW29.8 kW
Number of Cylinders44
Displacement2776.0 cc3059.5 cc
Power Measured RPM2450 RPM2200 RPM
Transmission TypeHydrostaticDirect Drive
Number of Forward Gears23
Number of Reverse Gears22
Cab Height246.9 cm249.9 cm
Width Over Track161.5 cm161.5 cm
Length Overall341.4 cm344.4 cm
Length of Track on Ground170.7 cm170.7 cm
Track Gauge131.1 cm131.1 cm
Ground Clearance30.5 cm30.5 cm
No of Track Rollers Per Side55
Shoe Size30.2 cm30.2 cm
Weight (Operating)3720.0 kg3930.0 kg
Track Pitch7.1 cm13.7 cm
Length without Blade—243.8 cm
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