How to secure bearings properly – Part 2: axial securing

Lars Butenschön | 27. November 2018

In part one of my series “How to secure bearings properly”, we learned how and why bearings move in their mounting holes and what we can do against it. If press-fit is not enough or not available in order to keep a bearing in place, you can do so by changing it´s shape. In this […]

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Finding the right bearing: 7 essential criteria

Lars Butenschön | 4. January 2019

The various influences that affect the lifespan of a plain bearing are relatively trivial. It´s easy to imagine that a truckload of fine dust is rather less helpful for a long bearing life. Also, that 500 ° C ambient temperature can cause difficulty in choosing the right lubricant, results in few raised eyebrows. And yet, often times […]

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Plastic bearings for high loads? What does high load actually mean?

Lars Butenschön | 4. December 2018

There is a saying among german conservative engineers going like this: “Wer Kunststoff kennt, nimmt Stahl”. “Those familiar with plastics use steel instead”. To be honest I didn’t hear this in quite a while now. But it´s still in the heads of many engineers. Even if they don´t know a word of german. In the […]

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How to secure bearings properly – Part 3: Anti-rotation features

Lars Butenschön | 27. November 2018

In episode two of this series, I showed you some options of how to secure bearings axially to keep them from moving out of housing holes. In this episode, I want to show you how to make an easy anti-rotation feature and why you would need one in the first place. Why would you need […]

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Latest news

Endless space …

Armin Gellweiler | 3. February 2012

If you think now that our pikchain® is taking off with the Enterprise and James T. Kirk, I must disappoint you.I still have something that you might like: It is still in the study phase and the first models have already been implemented, but I’m pretty sure we will soon be able to offer pikchain® […]

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Tensile strength test report of robolink® wires

Martin Raak | 26. January 2012

robolink® wires were tested for tensile strength on the ZWICK tractor (nominal tensile strength > 3600 N).The nipple connection was fixed with different adhesives (see installation instructions for the wires). The experiments were carried out at room temperature and at 80°C.          Wire with brass nipples  Section of the mounted nipple Test […]

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Tolerance

Armin Gellweiler | 13. January 2012

An important issue even today. What is tolerance? Who defines the tolerance? The tolerance is directly related to truth and freedom …Cut: Before I become philosophical here … Back to pikchain®: One of the questions about pikchain® that keeps coming back: How high is the tolerance of pikchain®, and the positional accuracy? Well, the pikchain® […]

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igus® 4 DOF arm with drive unit in use

Martin Raak | 9. January 2012

Polytechnico di Torino in Italy uses a robolink® 4-axis arm with drive unit and angle sensors. Movement with voice control

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