9 material differences · fewer than 12

Tractor oneHürlimann H-356 (A)1983–1986No measured PTO figureTractor twoSOMECA 580 (TD)1978–1983No measured PTO figure

Which should you choose?

Read our verdict on the H-356 (A) and the 580 (TD) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

9 material differences · 4 fields identical or within 5%, which is not counted as material

Hürlimann H-356 (A) and SOMECA 580 (TD), field by field
Field	H-356 (A)	580 (TD)	Gap
Engine
Engine power, claimed claimed	54.2 hp	57.3 hp	+6% 580 (TD)
Engine declared	Hürlimann H-916.3 W	FIAT-IVECO 8035.04.370 (377)	differs
Displacement declared	2.75 L	2.75 L	—
Maximum torque declared	136 lb·ft · 185 N·m	—	—
Transmission
Top speed declared	18.6 mph · 30 km/h	15.5 mph · 25 km/h	+20% H-356 (A)
Clutch declared	Pedal-operated dry SLH single-disc clutch as driving clutch	Dry FERODO double clutch	differs
Hydraulics & hitch
Pump flow declared	8.3 gpm · 31.6 L/min	6.5 gpm · 24.6 L/min	+28% H-356 (A)
Pressure declared	—	2,843 psi · 196 bar	—
Rear PTO speeds declared	540/1000 rpm	540 rpm	differs
Weight & dimensions
Unladen weight declared	5,423 lb · 2,460 kg	5,148 lb · 2,335 kg	+5% H-356 (A)
Wheelbase declared	86.6 in · 2,200 mm	84.6 in · 2,150 mm	—
Length declared	149.6 in · 3,800 mm	150.0 in · 3,810 mm	—
Width declared	73.6 in · 1,870 mm	76.0 in · 1,930 mm	—
Height, over the cab declared	96.1 in · 2,440 mm	103.7 in · 2,635 mm	+8% 580 (TD)
Ground clearance declared	14.8 in · 375 mm	19.0 in · 483 mm	+29% 580 (TD)
Turning radius, braked declared	—	9.7 ft · 2.95 m	—
Fuel tank declared	74.0 qt · 70.0 L	84.5 qt · 80.0 L	+14% 580 (TD)

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