Quality
For almost 200 years, we have been manufacturing agricultural machinery and parts, which gives us unique know-how to guarantee the quality of all our products.
From raw material to field testing
Longevity
Our parts are designed to provide maximum service life, reducing replacement frequency and costs.
Profitability
By reducing the replacement frequency of your wearing parts, and by opting for parts that ensure optimal agronomic results, you are sure to obtain the best service life/price ratio.
Safety
Original parts are manufactured to perfectly match your KUHN machine to guarantee proper operation and ensure its durability over time.
Authorized dealer
Benefit from the support and expertise of our 4,500 KUHN authorized dealers around the world.
Why choose genuine KUHN parts?
- We develop and produce our wearing parts based on strict specifications, adapted to the machines and their conditions of use
- We check the conformity of the materials used and the heat treatments carried out
- We check their dimensional compliance
- We carry out endurance tests on test benches
- We carry out comparative tests in real conditions
Find all genuine parts on MyKUHN
1. Our specifications include in particular:
- Operating and working conditions
- Work quality objectives
- Minimum expected service life
- Power and fuel consumption reduction objectives
- Part replacement time objectives
2. Conformity of materials used and heat treatments
To verify the conformity of materials, processes and heat treatments we use ultra-modern measuring tools:
To analyze and validate steel grades:
To control the steel grade used, we use a spectrometer, which allows us to analyse a part sample by determining the percentage of chemical elements present in the sample.
We select a steel grade adapted to each wearing part; many are made of boron steel to allow for optimalheat treatment.
We verify the steel grade used to ensure consistent quality, regardless of the manufacturing batch.
To validate the hardness:
To test the hardness of steel (Rockwell HRc), a diamond point is pressed against the surface of a part with a standard force. The size of the resulting indentation determines the material's hardness.
Thanks to the use of boron steel and heat treatment, the hardness of our rotary harrow tines averages 50HRc. Some adaptable parts, often without heat treatment or poorly treated, have a hardness lower than 30HRc, which compromises their durability.
To validate the manufacturing process:
Using a microscope allows you to zoom in on an area of the part to analyse its structure.
This tool also allows you to observe, for example, how tungsten carbide plates are brazed onto parts to assess the quality of the brazing and ensure proper adhesion over time, without the risk of the plates detaching.
3. Dimensional compliance
Although often similar to the naked eye, it's with a 3D scan that we can see the profil differences between a genuine KUHN part and an adaptable part.
An incorrect dimension, however small, can have detrimental consequences for the machine. For example, a non-genuine power harrow tine profile varying by just a few millimetres will increase power consumption and fuel consumption, as well as put additional strain on the machine's drivetrain.
Superposition of a standard original KUHN rotary harrow tine and an adaptable carbide rotary harrow tine. The blue insert corresponds to the section found on the right image.
The genuine KUHN part is the black section superimposed on the adaptable part which is the red section.
4. Validation on a test bench
We validate and compare our parts to competing parts on a test bench according to well-defined criteria and objectives. Through bench tests, we replicate the stresses that parts undergo during operation.
For example, we measure the tine’s resistance to fatigue on our forage harvesting machines, which allows us to determine their service life.
KUHN tines, designed in high-end spring steel, resist on average 120,000 cycles before breaking, while a non-genuine part designed in low-end spring steel will resist only 10,500 cycles on average.
5. Validation and comparative test under real conditions
We constantly carry out comparisons of wearing parts in field conditions.
To do this, we select clients across the world who work in the most extreme conditions to test different technical solutions (part profile, material, competing parts, etc.).
Conclusion
We make sure to offer the best value for money. Genuine KUHN parts are perfectly suited to your machines and their use. They ensure optimal adaptation to their operating conditions and are built to last. This provides greater performance and peace of mind at work.
Choosing KUHN parts is choosing optimal quality, increased longevity, improved profitability, safety, and the support of our authorized dealers.