Hydraulic Definition and 314 Threads

Hi Is there a way of transposing the formula to calculate the width (W) from a known height (H) and hydraulic diameter (Dh)? Dh = (2xWxH)/(W+H) Many thanks Jon

I m making a hydraulic lift using syringes (piston and cylinder mechanism). can anyone suggest the combination of syringes for maximum displacement. will the scissor lift work properly?

Hello: I am new at this. I am not an engineer . I want to build a firewood processor. I read several books on hydraulics and am now trying to design it. I have a question on calculating motor requirements . If someone could review my calculations I would sincerely appreciate it . I...

hey everyone, can someone please help me out with this one, I am a bit stuck with this using the law F = PXA and F = mxa calculate the pressure in a hydraulic cylinder, when the load of 375kg, is applied to the piston piston diameter it 95mm so far what i have worked out is as follows...

hello everyone, In a hydraulic cylinder high amount of load is lifted by applying lower loads in smaller diameter side.. for example, if the diameters of two cylinders is 2cm and 4 cm and i applied a force of 10 N on the 2cm cylinder for 4m downwards. so now the 4cm diameter cylinder could...

Hi all I am finally at senior design and I am looking to use hydraulics or pneumonics to be the driver of my load application system. I have zero experience with either so need some guidance. The intention is to have a testing device which can apply loads around 500 -1000 pounds. in...

Hi, I want to use a hydraulic cylinder to move another hydraulic cylinder but I don't want moving the 2nd cylinder to as easily move the 1st (doesnt have to be impossible, just harder). The system would be light duty and using large or heavy components wouldn't be appropriate. If there is some...

I've attached a PDF with a question related to hydraulics. I've answered (not sure if it was correctly) the first part of the question, but not sure where to start on the second. Thank you for any help. p.s. sorry for it being in PDF format. If someone is able to tell me how I can directly...

Hi, I am planning to build a garage to park my two cars. Since I don't have much space for two vehicles, I am planning to build an underground car parking system with two levels. For this, I need 4 synchronized cylinders for 4 corners. Load will be approx. 6000 lbs. Can anyone of you...

hydraulic -- flow inside a pipe, how to know the direction? if you have a flow inside a pipe, how to know the direction?

Does anyone know how many cycles (extend / retract) that a hydraulic cylinder should be able to do before needing repair? The specifics for the cylinder are that there is minimal (almost none) low frequency and low amplitude pulsing of pressure. The cylinder will cycle once every 5 minutes...

I'm running a test simulation on a Festo rig, with a hydraulic cylinder measuring 45mm internal diameter and 54mm external diameter. The testing requires an internal pressure of 60Bar with no external pressure applied. The strain gauge and setup I'm running it on I suspect to be faulty, and I...

need a hydraulic pump (gpm) ? to drive a hydraulic motor (torque)? - that has to replace a 16 horsepower gas engine - to drive a snowblower at 1000 rpm,s what is the formula for this? pump would be driven at arpox 3,000 rpm

Hydraulic systems problem, need help urgently I need to get an idea of what kind of forces one can get with real world hydraulic systems. I need to be able to deliver a huge force very quickly. The magnitude of the force should be enough to accelerate a 50kg cylinder to 22m/s over a distance of...

Homework Statement I want to calculate the areas of a hydraulic oil pump which will be used to lift a load(car). My load ratio is 50:1 and i want to transfer this power using a lever. I want the second piston to travel to max position on approximately 40 strokes. Also i want the ratio of the...

Hi, I am doing a project in college and i need to get a hydraulic system designed and priced. I have a good understanding of what I required for the sytem, A 10 kw motor, four 80mm diameter bore and 30 mm rod diameter cylinders, a 4/3 directional control valve a check valve and a non return...

hi guys am designing a trolley hydraulic jack .. am asked to do a lay out of the arm lifting the wieght .. would you help me how to do good lay out of my lifting pad??

OK very crude first sketch let me try to explain and you tell me if it sounds remotely workeable. Likemany other eco nuts after the holy grail of energy, I'm trying to brainstorm a low cost solar CHP system. I'm of the opinion that passive solar is always going to win on a BTU/$ collected and...

hydraulic tonnage question Help I have a small machine shop. I need to build a 600 ton press. I have a 300 ton press now. Can I simply add a 300 ton cylinder to the other end of my existing press and get 600 tons on an object in the middle or is tonnage not additive?

Homework Statement A hydraulic lift is used to jack a 970 kg car .12m off the floor. The diameter of the output piston is .18 m, and the input force is 270 N. If the input piston moves .13 m in each stroke, how high does the car move up for each stroke? 2-3. Relevant equations and attempt at...

Hey everyone, I've got a problem here and I'm looking for a simple solution. Basically, I need to keep a consistent hydraulic head between two points of a vertical drainage pipe. I have a sump pump and two electronic float valves (that I purchased separately). What I want to do is wire the...

We are designing a foot pedal mechanism to actuate two hydraulic pistion pumps. But the torque to actuate a pump is more than 50In-lbs at full stroke. In addition, a spring is used to make the control shaft of a pump return to its neutral position. Totally the torque to actuate a pump is...

This came up in class today and based on the equations it makes sense, but logically I can't get my head around this. Let's say we've got a hydraulic system with two pistons: Piston 1: 2cm2 Piston 2: 12cm2 Piston 1 moves a distance of 21cm, which according to A1D1=A2D2 means that Piston...

Hey Respected seniors, I want to know that how the hydraulic motor works? Im working as a trainee engineer in a company.. I watch daily a machine that have hydraulic motor, pump, solenoid valve... All these things are for the movement of a shaft which is connected to a jack( I see, there...

Homework Statement Working through 5.17 problem in Bedford 5th edition (Engineering Statics) p214 "The hydraulic piston AB exerts a 2000 N force on the ladder at B in the direction parallel to the piston. Determine the weight of the ladder and the reactions at C." piston between A and B on...

Homework Statement...

Homework Statement Piston 1 in the figure below has a diameter of 0.31 in.; Piston 2 has a diameter of 1.7 in. In the absence of friction, determine the force vector F necessary to support the 500 lb weight. Homework Equations F1/A1=F2/A2 The Attempt at a Solution I used...

i hope someone can help i have a question. i two hdyraulic cylinders. cyl #1 must extend then retract when cyl 1 is retracted, cyl2 must extend then retract but i can only use dcv how can this be done what type dcv must i useand if possible a drawing would be great. thank you in advance...

I'm studying about Thermal Hydraulic. When i read book :"NUCLEAR SYSTEMS I Thermal Hydraulic Fundamentals" - Neil E. Todreas and Mujid S. Kazimi. I don't understand about : calculate "Minimum critical power ratio" & calculate "Pumping power" in problem: a) Calculate the minimum critical...

hi everyone, i am a new entrant to this forum. can anyone help me to solve this issue. i have a hydraulic cylinder arrangement which delivers 100N force at 4m/sec with a stroke length of 128mm. i need to convert this linear force to run a cylindrical roller. what will be the torque it...

Homework Statement In a hydraulic lift the radii of the pistons are 1.75cm and 10.5cm. A car weighing 18.5kN is to be lifted by the force of the large piston. a.) what force must be applied to the small piston? b.) when the small piston is pushed 1.00cm, how far is the car lifted? c.) find...

Where I work we machine hubs for agricultural equipment. Currently we are having an issue pressing the cups\races into the hubs. The cups have a.001 inference fit with the bore of the hub. The hub dia is 3.2675" and the cup has a 3.2685" dia. the surface finish of the hub is 125 and I am not...

This is not a homework problem, just a discussion problem between engineers,. I would like to see what anwers others get. Given: A 24 inch diameter water main is operating at 40 lbs/sq. in.. A small hole is drilled in the top of the water main (not buried). Find: To what height will the...

Book Suggestion urgent Hi guys I don't know if I m posting at the right place but can some one suggest a good book to study Hydraulic , pneumatic & electro pneumatic circuits I just want to learn the basics( direction control valves , solenoids etc) basic circuits things like meter in...

I am attempting to calculate the pressure at the bottom of a bottle at the moment of impact. I have calculated the force of impact ,but now I am unsure if this will be the same force (approx) applied to the top of the liquid to determine the hydraulic pressure at the bottom of the bottle. In...

Just have a question about how hydraulics work... When a hydraulic pushes a mass away from the ground, does it apply the same force as to when it pushes the same mass towards the ground? I'm wondering if gravity assists it when its pushing it towards the ground and therefore can apply a lower...

I have a doubt about hydraulic lever if a force f1 is applied at piston of smaller area a1 then pressure is transmitted to every part of fluid due to aplication of f1 smaller piston move down and piston at other end move up does the moving up of second piston have any effect on...

Homework Statement A hydraulic lift is used to jack a 970-kg car 12 cm off the floor. The diameter of the output piston is 18 cm, and the input force is 250 N. (A) What is the area of the input piston? (B) What is the work done in lifting the car 12 cm? Homework Equations Fo=mg...

Homework Statement A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 250 cm2. It is filled with oil of density 510 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1200 kg at equal fluid levels? I got this answer - 120 kg...

Evening All, I am looking at a problem where there is essentially a hydraulic cylinder containing a double acting type rod (with an annulus). There will be some holes in the annulus, which will allow fluid to pass through once there is a load on the end of the rod causing it to extend. The...

I am doing a project of hydraulic vehicle. My professor ask our team to install a hydrualic pump and motor in the vehicle. We are considering to purchase a set of hydraulic pump and motor, and we have the following requirements: We have an existing electric motor of 22kW, 60Nm (continous)...

I have 1000kg of weight (it can be a heavy brick) suspended on a platform which I can lower (say 1 meter) and drive a hydraulic piston. A hydraulic accumulator will store the hydraulic liquid. The accumulator can then drive on-demand a hydraulic pump into a rotary motion and drive a generator...

If I had a 4X4 car and wished to raise it up to increase ground clearance by 10 feet, (looking something like a travel lift) keep the diffs and axels in their original position and attach 4 separate hydraulic pumps to the end of the axels to drive 4 hydraulic wheel motors at ground level – Would...

Force necessary to support mass on Hydraulic Jack? Homework Statement Piston 1 in the figure has a diameter of 1.31 cm. distance of 2 in Piston 2 has a diameter of 7.91 cm. distance of 10 in In the absence of friction, determine the force F, necessary to support an object with a mass of 904...

Hi Guys and Girls, I am a final year mech engineering student doing my thesis. My project is to design a bench and apparatus to "strip" cylinders. This requires the end caps to be removed (or clamps in some cases). The rod to be extracted, sometimes requiring large force, and the piston...

Hello, This may be a very basic question regarding the workings of accumulators, but I have been unable to find the answer elsewhere. If the pressure and flow within a hydraulic system is varying sinusoidally (peak pressure = 200 bar, period = 10 s) due to the motion of a piston, and you want...

For a proposed Hovercraft propulsion system, 1a) Is it feasible to use separate hydraulic motors to power a) four wheels for land propulsion, b) two water propellors for water propulsion c) two lift fans d) six actuators for retracting / deploying the wheels and propellers. 1b) Can the...

If I know only the diameter of the hydraulic cylinder that is 54 cm (4 cylinder, each cornner), how can i know the foce that act on the plate work. Do i need to know more any value ? sorry for poor english.

Hi, this really isn't a homework problem - it's posed in a textbook I am using to revise having not used physics for 15 years - I'm now training as a science teacher. Can anyone prove the hydraulic formula to raise a mass m by distance d where the force on the piston must be increased by...

If anyone here has experience with hydraulic hand pumps(those 10000 psi models), could you tell me how hot the oil, and by extenstion the pipes get during compression?