This article mainly introduces:

Slovakia hydraulic cylinder,hollow cylinder manufacturer,hollow cylinder

(Slovakia hollow cylinder,produced by Hengyu Group）

hollow cylinder are widely used in Slovakia，because of powerful torque，clever hydraulic energy conversion，simple structure and reliable operation.So our company has designed hollow cylinder for customers from Slovakia.

Introduction to hollow cylinder:

We can not just consider the price and ignore the quality when we purchase the hollow cylinders. Now some manufacturers produce unqualified products in order to reduce costs, the piston rod is not adjusted, the rod coating is not enough, the hollow cylinder finish can not reach, the guide sleeve should use copper, but instead of ductile iron, although the cost is reduced, the quality of the hollow cylinder is not required.

hollow cylinder head explanation: low pressure castings, medium and low pressure with HT300 gray iron, medium and high pressure with 35, 45 steel. When the hollow cylinder head itself is the guide sleeve of the piston rod, the hollow cylinder head is best cast iron. At the same time, brass, bronze or other wear-resistant materials should be fused on the guide surface. If the guide sleeve is pressed into the hollow cylinder head, the guide sleeve shall be wear-resistant cast iron, bronze or brass.

When the hollow cylinder is in use, once the seal and guide support ring are found to be defective, the seal with the same structural form and appropriate material should be replaced according to the structural form of the hollow cylinder seal to be repaired, so as to minimize the thickness of the oil film between the seal and the sealing surface and reduce the leakage of the seal.

hollow cylinder and hydraulic station selection: Select the type and structure of the hollow cylinder according to the operation requirements of the main engine. According to the external load force borne by the hollow cylinder, such as gravity, friction force of the external mechanism, inertia force and working load, determine the load change law of the hollow cylinder in each stage of the stroke and the power value that must be provided. Determine the diameter of the piston and piston rod according to the working load of the hollow cylinder and the selected oil working pressure. the flow rate of the hydraulic pump is determined according to the movement speed of the hollow cylinder, the diameter of the piston and the piston rod.

Answers to some questions about hollow cylinder:

Cylinder pressure calculation formula
The pressure of the cylinder at work is determined by the load, and the pressure of the physical force is equal to the force divided by the area of action (that is, P=F/S). If you want to calculate the output force of the cylinder, you can calculate it according to the formula: Set the radius of the piston (that is, the cylinder) is R (unit mm) the radius of the piston rod is r (unit mm) the working pressure P (unit MPa) the thrust of the cylinder F push =3.14*R*R*P (unit N) The pulling force of the cylinder F pull =3.14* (R*R-r* R) *P (unit N).

How big is the 100t cylinder pump and how big is the motor?
Load is calculated at 15 tons, stroke is calculated at 100 (both take the maximum) 15 tons = 15,000 kg, 15,000/210 bar (21 mpa) =71.42 square centimeters (cylinder area) 71.42/3,14 In the root *2=90,5 the inner diameter of the cylinder can be taken 100 mm. Travel 100 cm, that is, one meter, assuming 10, seconds a back and forth, then it is six times a minute, six meters per minute, then the required flow is,71,42*600 cm (6 meters) =42840 mm =42.84 liters/minute 42.84*21/60=14.9 kilowatts can choose 1450 RPM 4-stage motor 15KW.