How to calculate the return force of 200t hydraulic cylinder

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2.

The pressure of the oil cylinder is determined by the load. The pressure of the physical force is equal to the force divided by the action area (i.e. P = f / s)

if the output force of the oil cylinder is to be calculated, the pressure of the oil cylinder is determined by the load, It can be calculated according to the following formula:

thrust f push of oil cylinder = 3.14 * r * r * P (unit n)

tension f pull of oil cylinder = 3.14 * (R * R-R * r) * P (unit n)

R is the radius of piston (i.e. cylinder barrel) (unit mm)

R is the radius of piston rod (unit mm)

P is the working pressure level (unit MPa)

extended data

the main unit of pressure

A. pressure

international unit: "Newton", abbreviated as "cow", symbol "n"

B. pressure

international unit: "Pascal", abbreviated as "pa", symbol "pa"

converted 1 pa = 1n / m2

1 MPa = 145 psi = 10.2 kgf / cm2 = 10 bar = 9.8 ATM

1 psi = 0.006895 MPa = 0.0703 kg / cm2 = 0.0689 bar = 0.068 ATM

1 bar = 0.1 MPa = 14.503 psi = 1.0197 kg / cm2 = 0.987 ATM

1 atmospheric pressure (at M) = 0.101325 MPa = 14.696 psi = 1.0333 kg / cm2 = 1.0133 bar

1 mmHg = 133.33 PA

3. Hydraulic pressure area of oil cylinder × Oil pressure = oil cylinder output force
200 mm = 20 cm 100 mm = 10 cm 15 MPa = 150 kg / cm2
oil cylinder thrust: 3.14 × ten × 10 area × 150 pressure = 47100kg = 47.1t
cylinder pull: 3.14 ×( ten × 10-5 × 5) Area × 150 pressure = 35325kg = 35.325t
the resistance of oil return is not considered in the above calculation, because you have not provided oil return pressure. But the impact should be small.

4. If your two questions are the same, it seems that they are not easy to answer< If there are two independent problems, they are as follows:
the speed of the actuator is related to the oil flow into the cylinder. Divide the flow into the forward chamber and the return chamber by the effective cross-sectional area of the cylinder
the selection of oil pump is related to the forward speed of oil cylinder you need, and the maximum speed is the standard. But generally, a certain margin should be left

5. 1. General forward speed and return speed can be calculated according to your working condition, working pressure, cylinder diameter and rod diameter! Or make your own decision! Speed push flow! Or calculate the speed according to the flow Q = V * a
2. Selection of oil pump: after obtaining the flow rate from the above, multiply the coefficient by 1.2 and divide by 1.45 to get the displacement Q of the pump. According to the model on the sample, it is good to select the specification larger than q
3. Choose the size of the cylinder, and multiply the flow rate from 1 by 5 ~ 8!

6. (output of hydraulic cylinder) f = (pressure) P ×( According to the conversion relation of s
unit, just check the mechanical manual
in addition, the calculation formula of the output of the hydraulic cylinder is different between the forward stroke and the return stroke, and the area of the connecting rod should be subtracted for the return stroke.

7. 1. General forward speed and return speed can be calculated according to your working condition, working pressure, cylinder diameter and rod diameter! Or make your own decision! Speed push flow! Or calculate the speed according to the flow Q = V * a
2. Selection of oil pump: after obtaining the flow rate from the above, multiply the coefficient by 1.2 and divide by 1.45 to obtain the displacement Q of the pump. According to the model on the sample, it is good to select the specification larger than q
3. Select the size of the cylinder, and multiply the flow rate from 1 by 5 ~ 8!

8. Cylinder inner diameter = piston diameter = 200 mm piston area= π 200 / 2) square = 3140 square millimeter = 31.4 square centimeter, 25MPa = 250kg / square centimeter, maximum thrust = pressure * piston area = 250 * 31.4 = 7850kg = 78500n, this is the maximum thrust. The formula can be obtained from the formula. The rest of the data in the title is useless for this calculation.