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Frequently Asked Questions
Tie-rod: Tie-rod cylinders are not as strong as welded cylinders. They use one or multiple tie-rods to provide extra stability to the cylinder. These rods are mainly installed on the exterior of the cylinder and carry most of the load.
Welded: Welded cylinders offer more in the terms of customization and strength. End caps are welded in place to close the case of the cylinder. Welded cylinders often have a narrow body and shorter overall length, enabling them to fit better in to tight spaces in machinery.
Telescopic: Telescopic cylinders are multi-stage units that allow the cylinder’s stroke to be longer than a normal cylinder. In this case, the piston rod is also used as a piston barrel and a second piston rod is used for the consecutive barrel.
Tie-rod cylinder end-caps are larger than the diameter of the case. Therefore, with a welded cylinder you are able to get a larger bore and more lift capacity to fit in the same space as a tie-rod cylinder with a smaller bore and capacity. The only advantage of tie-rod cylinders, especially in agricultural applications, is its cheaper cost.
Current performance demands make welded cylinders the better choice when compared to tie-rod. Applications from vehicle lifts, trailers, dump trucks and snowplows to heavy construction machinery and material handling equipment all benefit from the superior strength of a welded cylinder
ASAE is applied to hydraulic cylinders with the 8″ and 16″ stroke. Cylinders labeled 8″ ASAE will have a retracted length of 20.25″ and 16″ ASAE will have a retracted length of 31.5″. There are non-ASAE 8″ and 16″ cylinders on the market, but they will not be guaranteed to have the same retracted length as the ASAE model.
ASAE takes the guess work out of specifications and offers the consumer peace of mind they will be receiving an equal replacement when it comes to measurements. Please check out our inventory of ASAE cylinders available in multiple bore sizes!
Cylinder manufacturers that use iron pistons do not have any seals and only have one rubber o-ring, causing the rest of piston to create friction against the tube. Magister Hydraulics’ steel pistons have high quality polyurethane seals that greatly reduce friction inside the tube and prolongs the life of the cylinder.
Cylinders with standard ductile iron piston/glands have an average lifespan of 3 years, whereas Magister Hydraulics’ cylinders manufactured using steel piston/gland combined with polyurethane seals prove to have an average lifespan up to 7 years
Fluid Power Formulas FAQs
Bore Diameter = Inside Tube Circumference / 3.1415
Rod Diameter = Rod Circumference / 3.1415
Stroke = Extended Length (center to center of pins) – Retracted Length (center to center of pins)
Volume Displacement in gallons = (Bore Radius² * 3.1415) * Stroke / 231
Fluid Pressure (PSI) = Force (lbs) / (Bore Radius² * 3.1415)
Fluid Flow Rate (GPM) = Volume displacement (gallons) / Time units (minutes)
Column Load (lbs) = pressure (PSI) * (Bore Radius² * 3.1415)
Hydraulic Horsepower = pressure (PSI) * Fluid Flow Rate (GPM) / 1714
Cylinder Extending Speed(Inch per second) = (231 * GPM) / (60 * Bore Radius² * 3.1415)