Komatsu D51EX-24

Configuration: D51EX-24 (no integrated machine control), 560 mm single-grouser shoes, power angle-tilt dozer 3,045 mm; EPA Tier 4 Final

Dimension diagram

Spec	Value	Source
Operating weight	13,700 kg	Published: 13,700 kg Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 30,203 lb, as on the brochure cover. Incl. PAT dozer, ROPS cab, operator, full fuel.
Shipping / tractor weight	Not published	Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 The tractor-weight table lists only D51EXi-24 (12,110 kg) and D51PXi-24; no D51EX-24 tractor weight is printed.

Spec	Value	Source
Overall length	4,800 mm	Published: 4,800 mm Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 Dim. G, with dozer.
Overall width	2,350 mm	Published: 2,350 mm Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 Dim. L, over tracks (560 mm shoes). Blade angled (M): 2,720 mm.
Overall height	3,176 mm	Published: 3,176 mm Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 Dim. H.
Track gauge / tread	1,790 mm	Published: 1,790 mm Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 Dim. J.
Track length on ground	2,745 mm	Published: 2,745 mm Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 Dim. F.
Shoe / track width	560 mm	Published: 560 mm Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 Single grouser, 55 mm grouser.
Ground clearance	390 mm	Published: 390 mm Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25

Spec	Value	Source
Undercarriage type	Crawler (steel tracks, PLUS rotating bushings)	Published: Crawler (steel tracks, PLUS rotating bushings) Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25
Track rollers / shoes per side	7 track rollers, 44 shoes per side	Published: 7 track rollers, 44 shoes per side Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 Carrier roller count not published.

Spec	Value	Source
Ground pressure	39.4 kPa	Published: 39.4 kPa Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 ISO 16754, with dozer and ROPS cab (0.40 kgf/cm², 5.71 psi).

Spec	Value	Source
Engine model	Komatsu SAA4D107E-7	Published: Komatsu SAA4D107E-7 Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 EPA Tier 4 Final.
Net power	98 kW	Published: 98 kW Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 ISO 9249 / SAE J1349 (131 HP). 91 kW with hydraulic fan at max speed.
Gross power	99 kW	Published: 99 kW Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 SAE J1995 (133 HP).
Displacement	4.5 L	Published: 4.5 L Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25
Rated speed	2,200 rpm	Published: 2,200 rpm Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25

Spec	Value	Source
Pump / aux flow	97 L/min	Published: 97 L/min Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 Piston pump discharge at rated rpm (26 US gpm).
System / relief pressure	27.4 MPa	Published: 27.4 MPa Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 3,974 psi.

Spec	Value	Source
Blade capacity	2.7 m³	Published: 2.7 m³ Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 PAT dozer, SAE J1265 (3.5 yd³).
Blade / moldboard width	3,045 mm	Published: 3,045 mm Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 Dim. A. Blade height 1,120 mm.
Max travel speed	9 km/h	Published: 9 km/h Komatsu D51EX/EXi/PX/PXi-24 brochure, EN-D51-BR01-0526-V3 (© 2026, Tier 4 Final). Retrieved 2026-10-25 3rd forward and reverse (5.6 mph).

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