Insane Hydraulics
Bold and audacious blog about fluid power
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Super Pressure Gauge - ADC PCB Layout
I have two Rexroth A6VE topics for you today - a DIY Acessory for Reading Pressure in the Flange-Face-Located Brake Release Port of a Plug-in Motor, and a List of Seals for Rexroth A6VE55HZ3/63 Hydraulic Motor.
Super Pressure Gauge - Choosing the ADC and Designing the Circuit
Elegant Directional Solution from Enerpac
Welcome to the Project Super Pressure Gauge
Today's blog post relies on external links (my apologies for that) but is is very educational - and if you slowly go through the graphs that I am discussing there, you will never be intimidated by a dynamic LS system ever again - Dynamic LS - Follow Up. Also, I've added another seal kit to the seals database - List of Seals for Rexroth A10VO71..3X Hydraulic Pump.
One Orifice, Two Orifices, Three Orifices... or - Is It Hard to Be Dynamic?
A Handy Accessory For Obvious (and Not Obvious) Purposes.
A Simple DIY Tool for Disassembling Cartridge Valves of Threaded Design
Webtec DHM403-B-6 - Wet Parts and Electronics
Lots of pictures and 3d renders in today's back-engineering session devoted to the Variable Orifice Loading Valve From Webtec
DIY Bluetooth Pressure Gauge Hardware Details
Another seal list is added to the seal kit database database today - and this one also presents a good example of why one would want to go through the hassle of ordering the o-rings by size instead of getting a proper seal kit - List of Seals for Rexroth A6VM55xx/63 Hydraulic Motor. And here's what happens when you mount a shaft coupling on a Rexroth A6VM motor with a hammer.
Since hydro-pneumatic accumulators are not unlike bombs (in the sense that they can release stored energy explosively), today's tip is tagged "professionals-only" - Simple DIY Nitrogen Accumulator Charging Accessory for Valve-in-Hole Ports.
Loosening Rusted Bolts With Electrolytic Bath
Adding two lists to the seals database: List of Seals for Rexroth A10VO140..3X Hydraulic Pump, and List of Seals for Rexroth A10VO45..3X Hydraulic Pump.
Virtually all components that I repair contain seals, and every overhaul warrants their replacement. I try to use original seal kits whenever I can, but it's not always possible (or feasible) due to logistical and/or economic reasons. In such cases, I order seals by size and try to reuse proprietary stuff (metal gaskets, etc...). Since I have been trying to implement the DRY philosophy as much as I can (DRY for Don't Repeat Yourself) I realized that my seal ordering/quote-requesting process is flawed (due to my absolute inability to stay organized). For example - whenever I need to request a quote for, say, a set of ORFS o-rings, I either hunt for an old similar e-mail of mine to copy, or look for the catalog page with the o-ring sizes, and then (slowly) compose a list of o-rings that I can send to a supplier for a quote. Not ideal, to say the least. So, I decided to shamelessly employ the powers of Javascript to make my e-mail orders/quote requests easier to compose - and thus a new Library section was born - the Hydraulic Seal and Seal Kit Database. I've already put there the list for the o-rings that I order the most - ORFS, SAE flange, SAE ORB (o-ring boss) O-rings. But I will be filling the collection up as I go (I have some A10VOs in the shop "aligned" for this week, so stay tuned for brief updates). This section will help me keep these seal lists organized in a single place which I can always reach wherever I am, and, hopefully, it may be of use to some of you as well.
Useful pressure-drop data in Measuring Low Flow Rate With a Needle Valve. And also - a Happy New Year to all! 2025 is going to be the year! So stay strong, stay on course, and never forget about your dreams!
We haven't had a full weekend for the last month and a half due to "usual end of the year routines" (think - stock inventory), and when I said to my wife today: "Finally, we are getting a full weekend before Christmas..." - something hydraulic broke somewhere - and... I am spending this Sunday troubleshooting a core-drilling rig in a mine, which makes me seriously wonder if my smartphone is tapped by a secret society that does not want to see me ever take a break... Anyhow, the Holiday Season is upon us once again, and before anything else - I want to thank you for being here and wish you all a Merry Christmas! I did more "housekeeping" today, and as of now, there are only 9 old posts in the Let's Talk Hydraulics section that require refactoring for the HTTPS standard. I am almost there! So, presenting to you the new and improved tales about:
A short "emergency pressure discharge" story from my past in Workshop Rage, and
A troubleshooting episode that involved a piece of tactical gear in Solenoid Valves, Hydraulic Jacks, Low Voltage and Broken Doors
How (Not) to Remove a Spring Pin From a Blind Hole
A Hand Pump as a Diagnostic Tool?
Rexroth M4-15 - The Loose LS Shuttle Seat Strikes Again!
Playing Russian Roulette With a Hose Cutter
If you ever see yourself in need of repairing a SensorJunior gauge damaged by leaked batteries - this post can steer you in the right direction - Saving Private Gauge.