Fluid Power Journal

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 …

Aerated Oil on a Log Splitter

I loaned my log splitter to a friend whose tree fell after a storm. The tree was a blue spruce evergreen about 30-ft. tall. It surprised me that the tree’s …

Cylinder Sensing Without Rod Drilling

Rota Hall-effect linear sensors in the mobile materials-handling industry offer solutions for all cylinder types. Cranes, telehandlers, forklifts, or …

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 …

Accumulators: Energy Savers/Energy Wasters

It looks like the next few articles will be about some specific components and how they can be best utilized in a circuit for maximum energy savings. Previous …

Retract Coil Burn-Out

Workers at a private contractor that makes torpedoes for the U.S. Navy were having a problem with an assembly line directional valve coil that would burn out …

Rod Clamp for Hydraulic Cylinders

The AMLOK® Hydraulic Series RCH rod clamp provides power-off clamping of rods and shafts. The clamps are actuated by a spring/collet mechanism and unclamped …

Cylinder Stuttering on a Technical School Trainer

A community technical school received funding for a hydraulics program. They had nice hands-on-training stands in storage and did a nice job setting up their …

Shorter Stroke Lengths Make LVDT Linear-Position Sensors Ideal for Hydraulic Cylinder Applications

By Michael Marciante, Applications Engineer, Macro Sensors The development of computerized layer winding and improved microprocessing has considerably reduced …

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 …

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