... Diesel engine-hydraulic coupling reverse-gear box set(series 3000) 1.structure is compact and convenient for operation ... .The power range of the units is:105(140hp)~3000(4000hp)kw,which can fully meet the drive requirement ... cost of energy can be save more than 40%3000 series diesel engine coupling set(reverse-gear box)categoryParameters ... engine-hydraulic coupling reverse-gear box set(series 3000)