Tuesday, 05 September 2017 18:50

Mixing it with the big boys

Written by  Mark Daniel
Keenan’s self-propelled diet feeder/mixer. Keenan’s self-propelled diet feeder/mixer.

New from Irish manufacturer Keenan is a self-propelled diet feeder/mixer built with its Italian partner Storti.

The collaboration sees the Italian specialist build the chassis, running gear and loading arm, and the boys from Ireland dropping a 16 or 20m3 MechFiber mixer tub (as used in its trailed range) onto the rear.

Power comes from a 4-cylinder, 4.5L FPT engine producing 170hp using SCR to deliver Stage IV emissions compliance.

It is mated to Storti’s own design mechanical transmission, said to be up to 25% more fuel efficient than hydrostatic drivelines. The system has an extended service interval of up to 1000 hours.

Hydro-pneumatic suspension is fitted to the front axle for a smoother ride, machines of all specs get stability control, and Plus versions can travel at 40km/h.

At the front end, the integrated loading arm can reach to 4.5m, carries a cutting drum fitted with 84 blades and is controlled via a proportional joystick by the operator.

Depending on the material being loaded, the drum rotates counter-clockwise for the likes of maize or cereal silage, or clockwise for longer crops such as grass silage or hay. The latter function is said to eliminate blockages in the mouth of the crop conveyor. In either case, the firm closed finish at the clamp face is said to help reduce secondary fermentation and eliminate wastage.

Chopped material is fed by the central conveyor over the full length of the mixing tub. The manufacturers claim that as the material is loose when it enters the tub it is easy to mix, resulting in time and fuel savings over bulk loaded commodities. Loading, mixing and feeding a mob of 80 cows is said to take only about 18 minutes.

Like existing Keenan trailed feeders, a heavy-duty oil immersed chain at the rear drives a six-paddle mixer system with fixed knives and a full-length discharge auger, and delivery to either side.

A centrally located greasing bank should help simplify daily maintenance. Though the operator cab can’t be described as luxurious, it is like that of a telehandler – functional and offering good forward visibility.

All mixer functions are controlled by the Intouch box, including mixing and weighing, with the latter being calculated by a NIR sensor mounted at the loading drum.


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