Technically Speaking

Standard Samples for Grinder Burn Etch Testing

Jonathan R. Crow and Michael A. Pershing, Caterpillar, Inc. This paper discusses a unique method of producing a sample for grinder burn etch testing. The method of producing the sample is described, and…

How characterizing the efficiency of agricultural machines

When speaking of quantification of the efficiency of a system, we mean the calculation of its thermodynamic efficiency, defined as the mathematical ratio between the input energy, i.e. the energy entering the considered…

Electric mobility, not only cars

The future mobility will be increasingly electric, for agricultural machines, too. Carlo Gorla, Politecnico di Milano DRITEV are the initials that this year identify the maxi-convention that VDI, the association of German engineers,…

Analysis of the kinematic chain for the motion transmission from the tractor to a rotary harrow

The present article illustrates the study of the kinematic chain between tractor and rotary harrow used for the motion transmission from the PTO to the tool. The study has focused also on the…

The new electro-hydraulic solutions can revitalize hydraulics

The analyses of the new market trends show that in the next future hydraulic and electric drives will increasingly merge. The fluid power sector is changing and big manufacturers have realized it. What…

Electro-hydraulic systems, potentialities and limits

It is common opinion that the integration with electric systems will play a relevant role in the future of hydraulics. What are, however, the characteristics of electro-hydraulic systems, what the achievable advantages and…

Friction phenomena in pneumatics

In this article, we are describing the friction phenomena in pneumatic components, discussing some modelling aspects and some energy and manufacturing implications. The friction phenomenon arises also in pneumatics, which performs motions, regulations,…

Bearing materials key to increased reliability

The use of application-specific bearing steels and surface treatments permits the reliability of bearings to be increased significantly, which in turn contributes to the reduction of machinery and equipment TCO (total cost of…

Hydraulic Fluids: Risks of fire and toxicity

Oil, which can be both mineral and synthetic, is the liquid generally used for the lubrication of the parts in motion and for the energy transmission. we are analysing the aspects connected with…

Increasing the heat exchange through the deposition of nanostructured materials

Will we have more efficient and performing heat exchangers, even keeping the sizes unchanged? ISTEC (Institute of Science and Technology for Ceramics), in Faenza (Ravenna, Italy), belonging to the National Research Council, has…

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