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Mobile Hydraulic Tips focuses on pumps, fittings, valves, manifolds and other products and news in the Mobile Hydraulics industry.

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Engineering Basics

Making battery-powered hydraulics last longer

October 25, 2024 By Mary Gannon

Making battery-powered hydraulics last longer AdobeStock_757196672

I never thought I’d be writing this article, even if you asked me a year ago. Mobile hydraulic machines are often high-powered beasts with insatiable power demands that traditionally disqualified battery power. However, the proliferation of electric passenger vehicles has funnelled investment dollars into battery technology, which has trickled down into other industries. By removing […]

Filed Under: Components, Engineering Basics, EV Engineering, Pumps / Motors

A primer on hydraulic pilot valves

October 10, 2024 By Mary Gannon

Figure 1. A spool inside of a valve has surfaces that look like an annular piston, and poppets tend to look like a piston rod assembly or even just a floating, spring-biased piston.

Sometimes valves are actuators, and those actuators need valves. Sounds confusing, I know, but hear me out. With few exceptions, most hydraulic valves have at least some type of behavior that mimics a cylinder. A spool inside of a valve has surfaces that look like an annular piston (Figure 1), and poppets tend to look […]

Filed Under: Components, Engineering Basics, Featured, Valves / Manifolds

7 ways to reduce weight on mobile hydraulic machines

September 20, 2024 By Mary Gannon

Reducing weight on mobile machines, especially compact ones like this mini excavator, is crucial to efficient, environmentally friendly designs. Hydraulics can play a part in many ways.

By Josh Cosford, Contributing Editor One of the few disadvantages of hydraulics is the mass added to components capable of withstanding thousands of pounds of pressure. Of course, the raison d’ệtre of hydraulics is the transfer of pressurized fluid to achieve work. But do high-pressure components have to be high mass, especially on mobile machines? […]

Filed Under: Engineering Basics, EV Engineering, Featured

4 key considerations when choosing electric motors and equipment

September 3, 2024 By Mary Gannon

Electronic Open Circuit pump combines Software and hydraulic components for dynamically controlling travel and working functions in one hydraulic circuit.

Contributed by Enrique Busquets  •  Director of Engineering Systems and Components, Bosch Rexroth Fueled by unceasing innovation, electric motors have solidified their position as a catalyst for change, reducing countries’ greenhouse gas emissions (ghg) and lowering total cost of ownership for heavy- and medium-duty vehicles and machinery. The accelerated adoption of electric motors has been […]

Filed Under: Components, Engineering Basics, EV Engineering, Featured, Pumps / Motors Tagged With: boschrexroth

Comparing electric versus hydraulic motors

August 9, 2024 By Mary Gannon

Axial-hydraulic-motor-AdobeStock_177020100

By Josh Cosford, Contributing Editor Comparing electrical with hydraulics is one of my favorite topics to write about. When you study both fields, you quickly realize how much the concepts, mathematics and symbology coincide. However, not all readers share my same enthusiasm for the analogy. Many years ago, one LinkedIn member commented that I was […]

Filed Under: Components, Engineering Basics, EV Engineering, Pumps / Motors

When should you use counterbalance valves?

July 3, 2024 By Mary Gannon

This sample circuit of a hydraulic hoist (not a real hoist or Raptor), includes a pump, relief valve, DCV, cylinder and a counterbalance valve. (Note: the author created the circuit but AI was used to create the vehicle image.)

By Josh Cosford, Contributing Editor Counterbalance valves are an ingenious invention used to control runaway loads caused by mass or gravity attempting to push or pull outside of intentional movement. There are many ways to control a load or prevent it from moving, such as flow control valves or pilot-operated check valves. However, a counterbalance […]

Filed Under: Components, Engineering Basics, Featured, Valves / Manifolds

How CAN makes mobile hydraulic control more reliable and precise

June 18, 2024 By Mary Gannon

CAN Networks for mobile hydraulics AdobeStock_474738339

By Josh Cosford, Contributing Editor In the realm of mobile hydraulics, we must prioritize efficiency, reliability, and precision to remain competitive against other technologies. In many cases, hydraulic advancements come from partnerships with competing technologies, and one of the most important in recent years is Controller Area Network (can) networks. CAN networks revolutionize mobile hydraulics […]

Filed Under: Components, Controls, Engineering Basics, EV Engineering, Featured

When should you use hydrostatic pumps?

March 7, 2024 By Josh Cosford

Hydrostatic pumps are well suited for use on skid steer loaders.

The term hydrostatic refers to the fundamental concept we hold dear in fluid power, which is that confined hydraulic fluid under pressure exists in equilibrium and balance. Although hydraulic fluid does no more than hold objects stationary without the active application of force through a pumping device, the concept is entirely different than hydrodynamics, which […]

Filed Under: Components, Engineering Basics, Pumps / Motors

How do I know I’ve oversized my pump?

December 6, 2023 By Mary Gannon

oversized hydraulic pump AdobeStock_519121265

By Josh Cosford, Contributing Editor Oversizing your hydraulic pump is a relatively common error by beginner fluid power professionals or, more likely, entirely untrained individuals tasked with maintaining machinery. Everyone wears many hats these days, so don’t take it personally if you’ve inherited a role that requires skills above your pay grade. More than once […]

Filed Under: Components, Engineering Basics, Featured, Pumps / Motors

Fluid power at sea

October 17, 2023 By Rachael Pasini

Learn how hydraulics are used in maritime vessels and why hydraulics is the technology of choice. By Josh Cosford, Contributing Editor Hydraulics have played a vital role in various industries, and the marine sector is no exception. From small pleasure boats to large ocean liners, hydraulics are extensively used in a wide range of marine applications […]

Filed Under: Engineering Basics, Featured, Industry News, Mobile Hydraulics Blog

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