Monday, 09 April 2018 12:34

Second-generation potato harvester sets the standard

Written by 
Mark Daniel. Mark Daniel.

Grimme launched its 4-row self-propelled Varitron potato harvester in 2011 and now a second-generation machine – 435hp, rubber tracks and a 7-tonne non-stop bunker as standard.

The family-owned company manufactures in a purpose-built factory in Rieste, Germany. 

The Varitron 470 Platinum Terra Trac meets the latest Tier 4 Final emissions levels and is available with a row width of 750 or 900mm.

A high priority in the new model was to improve the driver comfort, achieved via the new ErgoDrive operating concept to allow intuitive control and easy access to all functions. The operator can save individual and field-specific settings that can also be stored and retrieved for future use. 

Up to 12 LED headlights provide exceptional lighting, and a coming-home function allows the driver to leave the machine safely. 

Assistance systems regulate the speed of the ring elevator and the main webs based on the load of the intake. An air compressor system with connections at the cab and at the air filter allows easy cleaning. 

Close attention to improving crop extraction sees the attachment and deflection of all main webs being comprehensively improved, likewise the extracting rollers of the roller separator. This leads to a higher stability, improved waste separation and easy adjustment. 

A standard integrated stone protection system protects each share plate and share frame from damage by stones or obstacles, so protecting the whole intake area. 

Also, in heavy soils it is now possible to use highly wear-resistant plastic share plates that help reduce sticking of soil in difficult harvesting conditions. The maker’s wide choice of separators is unique in the potato harvester market. 

Besides a fine haulm elevator, Grimme offers a roller separator or MultiSep and is the only manufacturer offering a VarioRS, a double MultiSep or the combination of a roller separator and VarioRS or MultiSep systems.  

Gentle unloading, designed to protect product quality, is achieved by a novel ring elevator to ensure an equal and gentle distribution of the potatoes into the pockets of the ring elevator.

 Another new optional extra is the haulm distributor which spreads the waste potato plants and haulm evenly over the cleared surface; it allows adjustable haulm spreading distance from the cab. 

The weight distribution of the machine has been significantly improved, i.e. by a redesign of the rear axle, by displacement of the fuel tank and by use of light, stable plastic bars in the webs. As a result, ground compaction is much reduced and the machine is more stable even with a full bunker. 

The Terra Trac rubber tracks reduce compaction and enhance stability on slopes, and a telescoping front axle allows the use of a wide oversized tyre which also reduces compaction on the right outer row.


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