Fluid Power Journal

Problem: Minimum Pressure

What would be the minimum pressure required to hold the given load on the pneumatic cylinder? Think you know the answer? Submit …

Problem: Cylinder Retraction

Neglecting pilot line sizes, approximately how many seconds after pushing the start button will the cylinder start to retract? This teaser is printed in the …

Problem: Calculate This

Given: Coefficient of Friction: .2 Cylinder: 4″ x 20″ x 2″ 1. Calculate the pressure to retract the load. 2. Calculate the distance that the …

Problem: What Is The Easiest Fix?

Why doesn’t the adjustable flow control regulate the speed to open a door equipped with an automatic door closer? What is the easiest fix? The original …

Problem: Number of Cycles

“I plan to put an eight (8)-ft. elevator in my house using an air-over-oil system in case of power outages. My air compressor has a 75-gallon tank and kicks …

Problem: Cost of Air Leaks

We often hear that the cost of air in a manufacturing facility is approximately 40% of a utility bill.  Obviously this will vary considerably for different …

Problem: Cylinder Extension

Given: Cylinder is 4″ x 20″ x 2″ Operating pressure is 100 psi No load on cylinder This cylinder is extending at a rate of 5 inches per …

Problem: Vacuum Regulators

I maintain a mobile medical unit (hospital), which is a large semi-truck that opens up to over 1,000 square feet for emergency medical usage. Along with all …

Problem: Building Anchor

This question varies a bit from the normal Air Teaser, however it still uses some of the same formulas that are used to determine a force to overcome motion. …

Problem: Vehicle Rod Sizing

In designing a vehicle to go down the road at 60 mph, one must know the drawbar pull of the vehicle. This is a combination of drag coefficient, rolling …

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