Insane Hydraulics

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Welcome to, the meeting place of the smart oil-hydraulics-related people. If you are visiting this site for the first time, please read The Introduction and do The Simple Test before you go on.


27 January, 2018

The scariest pump repair of 2017 which made me remember what cold sweats felt like, or a definite answer to the question "for how long can a roller bearing support an axial load on its cage (you heard me right - the cage, a.k.a. separator or retainer).
Composed of the following parts:
The Prologue
The Monday Surprise!
The Embarrassing Call
The Painful Wait
The Long Awaited Unveiling
Bearing Notes
The Final Conclusion

3 December, 2017

An Add-On to the Article on Cavitation in Hydraulic Systems with a proof of how small our "true hydraulic community" really is.

10 October, 2017

My newest take on the use of Suction Filters in Hydraulic Systems, explaining, among other things, their biggest advantage, namely, their ability to serve as perfect "slacker tell-tales".

14 September, 2017

I re-read my earlier post on cavitation, and realized that it needed editing. One thing led to another, and I ended up re-wring the complete article, with higher definition examples and a more details, including my personal take on the subject. So, here it is - Cavitation in Hydraulic Systems.

21 August, 2017

A discussion between two hydraulic techs I overheard the other day led me to once again consider certain "peculiarities" of application of pilot-to-open check valves on differential area cylinders. In my search for a better and more graphical representation of the problem I came up with the following interactive page - Cylinder Mounted Pilot-to-Open Check Valve Interactive Pressure Chart. I was actually going to compose an article on the subject before uploading the script - but hey, since the code is already (more or less) done, I might as well put it up for the public's appreciation. Do tell me if the script doesn't run (you will need a modern browser with javascript enabled to visualize the page properly). The detailed article on the topic will be coming out shortly.

25 July, 2017

As I was going through the painful process of recoding the pages to the new HTML5 format - an old post on Hysteresis brought a smile to my face...

9 July, 2017

A long-due explanation for the Five Years of Silence

15 June, 2017

First "real" update in five years! It's about time... But before any actual oil-hydrauics posting can happen, I have to do some serious "remodelling" around here, i.e. replace the outdated static design with something more adaptive and mobile-friendly, which is a gargantuan task, given the fact that I did everything wrong when I created the blog with a free visual editor and zero knowledge of HTML. But it needs to be done, and it will be done. I'm starting with the home page, and will eventually "grind" through the rest of the site. Should anyone catch any "funny looking business" in the browser, please, shoot me an email describing it - I'll do my best to correct the errors. Also - older browsers might not display the new code correctly.


Five Years of Silence

His Name was Hysteresis

Emotions and Our Life

A Word on Updates of This Website

Aftermarket Spares - Thoughts and Examples