![Pièce détachée agricole couteau plat KUHN](/sites/default/files/styles/media_270x140/public/media-images/couteau-plat_1600x900px.jpg.webp?itok=NQWruMUL)
The flat knife
The flat knife is self-sharpening.
Forage can be of lower quality if the spare parts on your hay & silage-making machines are not adapted. Choosing your agricultural parts is an important part of a successful harvest.
Certain parts are your allies in the optimisation of hay & silage making, such as knives for mowers, and tines for tedders and rakes.
KUHN knives are subject to many stresses during harvesting operations. When produced, the knives are heat treated which increases their hardness. Thus, they can withstand deformation without breaking or showing the slightest sign of cracking:
In addition, they undergo a tempering process to give them flexibility and are finally coated with paint.
Available in Fast-Fit version, this system provides a certain number of benefits, such as pre-stressed leaf springs and grooved screws to hold the knives in place. The recess in the skid means that knives can only be released in one place and with a special tool for knife replacement.
Bolts can be replaced individually, which keeps costs down.
Each knife is designed for a special purpose, for different working conditions:
For intensive operations, KUHN offers 5mm-thick knives which feature:
In addition, with a width of 55mm, forage flow to the rear of the machine is optimised.
KUHN OPTIDISC ELITE cutter-bar knives for mowers ensure perfect forage flow and impeccable quality of cut. With OPTIDISC ELITE technology, grass is cut once only.
To achieve this, the distance between discs varies:
PROTECTADRIVE safety protects the cutter bar’s gear train. In the event of an impact with an obstacle, the disc shaft can shear just above the bearing thanks to a carefully dimensioned shear groove. Repair costs and downtime are consequently lower.
The DIGIDRIVE system consists of forged, case-hardened steel fingers for excellent wear resistance, in any position. It is highly reliable and requires no maintenance.
Kuhn has developed fully enclosed gearboxes for rakes that fully protect drive components and improve resistance to wear. This concept is what makes the MASTERDRIVE gearbox so successful and ensures exceptional reliability and longevity, even with intensive jobs.
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