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At the NAMPO Show farmers had opportunity to meet the new Rubin 10 disc combination, but at the Val Farmer’s Day the machine was put to work and farmers could judge it in action. Christo Prinsloo of LEMKEN SA says the Rubin 10 replaces the Rubin 9.
Changes to the implement start right at the front. “The hydraulic tow bar of the Rubin 10 now connects directly to the tow bar of the tractor and not any more to the lift arms. This makes it easier to set the machine correctly, and there is now also hydraulic adjustment for depth control in the middle of the machine.”
The hydraulic adjustment co-acts with the rear rollers for depth control to ensure that the machine runs evenly.
Christo says another change is on the discs, which have been enlarged from 620 to 645 cm. Each disc still has its own spring for even, stable operation, but for the release action the disc arms are not affixed to the beam with U-bolts anymore; this has now been replaced with a mechanism welded onto the main frame.
The discs have been replaced with Duramax discs, which are hardened even more for strength and durability compared with the present discs. The disc indents are no longer round but angular which means it will cut more aggressively through material.
The two beams are placed further apart for improved material flow and mixing of soil and plant rests, but the working width of the discs remain at 12,5 cm.
“The discs are also arranged symmetrically to the left and right, which lowers the side-pull on the machine, preventing the formation of banks. The soil is cut very evenly,” says Christo. “Previously the front row discs faced in one direction, and the rear row in the opposite. At times this made it difficult to keep the machine straight on inclines, or when cultivating very hard soil when the rear discs entered the soil much easier, causing the machine to pull to one side.”
Equalizers have now been places between the second disc set and the rollers instead of a second row of rakes.
The semi-mounted Rubin 9 could work up to 6 metres wide; on the Rubin 10 this has now been increased to 7 metres.
Further information can be obtained from Karel Munnik on 082-412-2577 or Blackie Swart on 082-404-9651, or visit the website www.lemken.com.