Maschio has announced it will fit heavy-duty gearboxes as standard to its power harrow range to increase the horsepower rating of its Orso machines to 300hp, Toro to 400hp and the Jumbo range to 550hp to handle the rising power outputs of tractors across the UK.

The new gearboxes have double the oil capacity, strengthened parts and increased cooling capacity, which UK importer Opico says makes them more capable of smoothly transferring the extra horsepower.

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Wider, heavier duty bevel gears have been installed in the gearboxes on 85mm shaft diameters to toughen things up, while a forced oil recycling system has been fitted with twin holes at the top of the gearbox to flow oil where it’s needed.

Any extra heat generated is dissipated by larger 300mm cooling fans, with outer fins fitted to increase surface area and radiate heat to keep the gearbox cooler.