Saving and simple Diesel, a chopping drum drive gear goes directly from the engine shaft, a blade grinding device, a cross bar of the increased wear resistance, a responsive metal detector, a fuel tank of 540 liters for operating during 11 hours without refuelling.
Life time of driving belts fabricated by the German firm Optibelt is more than 1000 machine hours.
The principal expenses at use of forage harvesters fall on the fuel buying, breakages elimination and changing of wearing parts.
Cross bar has a double-face working surface with the chrome-vanadium alloy facing, which increases the endurance in 3,5 times.
Such expenses can be especially great
for high-efficient harvesters but not for «Don 680». The specific fuel consumption of «Don 680» is the lowest among the machines of this class. For example, fuel consumption for harvesting of 1 ton of corn silage is not more than 0,43 kg.
Fuel tank on 540 liters - it is 11 hours of operating without refuelling.
There are some reasons for it — a compact
straight-through arrangement of the
straight-line crop flow,
the low-consumption and unpretentious to fuel quality engine, a chopping drum gear coming directly from the engine shaft, a share device to provide efficient powerful cutting.
Metal detector, at detection of metallic object, instantly switches on the indicator lamp in the cab and the feeder quick stop mechanism, which prevents the damage of valuable units.
Practice shows, that it is cheaper to prevent breakages than to eliminate their consequences. To this effect some engineering solutions have been realized at designing of «Don 680», some of them are shown on this page.
For the purpose of cost saving at changing spout pipes, the replaceable inserts are placed on the pipe base.
Operational costs are also lowered by the use of modern production technologies, increasing the endurance of most charged parts.