The Engineer's Blog

Energy efficient, personalized, smart - in need of extensive maintenance? Engineers in machine design are faced with increased demands. How do they meet them? What kind of solutions evolve in different industries? How is it possible to enforce innovation internally? Have a read on this and more in our blog.

 

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What is the reason for using a coupling with limited end float?

By Norbert Telaar on Apr 04, 2018

A coupling is an element of a drive line that primarily serves the purpose of transmitting power from one shaft to another, thereby providing for the connection of the driving and driven machine. At the same time, shaft misalignments, e.g. caused by assembly inaccuracies, should be compensated by the coupling while generating minimum reaction forces.

The distinction is made between angular, radial and axial shaft misalignments which may also occur simultaneously. Depending on the coupling type you choose, the dynamic behavior of the entire drive line, and consequently of the machine and its production process, can often be influenced by adjusting the torsional stiffness of the coupling.

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Friction Springs for Earthquake Protection of Critical Infrastructure Objects

By Lars Jahnel on Mar 21, 2018

What started almost a century ago as buffer between railway cars has now become a universally applicable damping element for almost all industry sectors – also as a protective element against potential damages to buildings and industrial facilities caused by earthquakes.

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Chemical Processes for the Surface Treatment of Components (2)

By WP on Feb 21, 2018

This is part 3 of our series on surface treatments of components. Due to the great number of different chemical processes, we have split them up and explored these processes in the previous article:

  • Chromate conversion coating
  • Phosphating
  • Galvanizing
  • Plating
  • Black oxide.

This blog article covers the remaining chemical processes commonly applied for the treatment of component surfaces.

Topics: Safety Materials
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Chemical Processes for the Surface Treatment of Components (1)

By Lars Jahnel on Feb 07, 2018

In our first blog article we presented the most common mechanical processes for the treatment of component surfaces. In this second part, we address the most frequently used methods of chemical surface treatments. The decision as to which of the following treatments should be applied is predominantly influenced by design points of view, technical aspects and the intended appearance of the product.

Topics: Safety Materials
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The ATEX Directive - Example of its Application in Practice

By Norbert Telaar on Dec 06, 2017

The term ATEX is derived from the French denomination "Atmosphères Explosibles" (explosive atmospheres): The ATEX Standard comprises the Equipment Directive 2014/34/EU as well as the Workplace Directive 1999/92/EC. In a previous article about the ATEX Directive we put more emphasis on general issues and theory. In this article we use the example of a flexible claw coupling to explain in more detail how this standard is implemented in practice.

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General Measurement Technology & its Historical Development

By Sophie Keil on Aug 09, 2017

Measuring processes unconsciously cross our daily paths more often than we are aware. Whether it is about scooping coffee for the coffee maker, the temperature of the coffee or the speedometer in a car - we encounter measurement technology everywhere. But, what is “measuring”?

A well suited definition is given here: “Measurement enables us to make statements about a measured parameter in relation to a unit of measurement”. Measurement technology allows the determination of parameters such as length, mass, temperature etc.

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Basics of Coupling Selection: The Safety Factor

By Norbert Telaar on Mar 15, 2017

Engineers need to consider several aspects for selecting the appropriate coupling such as the type of installation, primary and secondary connection, available space of installation, ease of mounting and dismounting as well as maximum rotational speed and resilience of the coupling. To compensate physical parameters or changes that are not obvious the safety factor, also known as safety multiple or safety coefficient, is taken into account.


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Dynamical Torsional Etiffness: Some Couplings Need Finer Tuning

By Simon Graf on Aug 24, 2016

The coupling is normally the softest element in the drive line, literally – but by no means the weakest link of the chain. Its configuration plays a decisive role for the functional capability of the driving and driven machine and for the reliability and lifetime of the entire drive system. The optimum adjustment of the coupling to the connected machine units is especially important in all cases where failures and breakdowns are not allowed to occur. 

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The new ATEX Directive: What operators should know

By Volker Carl on Jul 27, 2016

The cut-off date has passed. The new EU ATEX Directive is now valid. Manufacturers, distributors and operators should keep themselves informed, since the old certificates are no longer valid for any products that will be newly launched onto the market. There are also amendments pertaining to operators, who themselves set up a plant or an assembly from several components, for example, with a pump, coupling and engine. The user will then be considered as manufacturer and must know the exact properties of the components used, including the coupling.

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