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Vennings - Model 12 Ton 15 M³ -Galvanised Chaser Bin

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The standard unit comes complete with a 12" discharge auger, and the hydraulic raise and lower on the auger.  The bin has a cut of door at the base that is hydraulically operated from within the cabin of the tractor.  A simple direct drive to the base of the auger, connected to the tractor by a PTO, and a slip clutch.

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SOME INTERESTING INFORMATION ON INCREASED EFFICENCY BY OWNING A CHASER BIN
 
Stripping crops in the most efficient and time effective way is one of the main goals at harvest.
 
Some basic calculations reveal that stopping a harvester to unload the grain bin can potentially reduce harvest efficiency by 35 percent; in effect meaning harvest takes 35% longer than it needs to.
 
A common way to negate the lost time to stop and empty is to run a chaser bin.
 
Consider a harvester with a work rate of 40 tonnes per hour, a grain bin that can hold 9.5t and the har-vester spends five minutes out of the crop each time the bin needs to be emptied. This means the harvester is spending 35% of the time out of the crop.
 
In this example the true harvester work rate is therefore reduced by 35% because it is only in the crop for 65% of the time.
Multiplied by the value of the grain being harvested ($200/t) and the percentage reduction in value of that grain after it is weather damaged (40%), the potential loss is therefore $1123/hour.
 
Of course there are events that would damage the crop completely, such as hail or fire, making the reduction in value of that grain $100%. In this case the loss would be $2800 for each hour spent harvesting due to the inefficiency from stopping to empty. But typically, weather-damaged grain is downgraded in value by about 40%.
 
Therefore, running a chaser bin would enable an extra $1123 worth of grain to be harvested during each hour of harvester operation.