This article mainly introduces:

Denmark hydraulic cylinder,stroke adjustable cylinder manufacturer,stroke adjustable cylinder

(Denmark stroke adjustable cylinder,produced by Hebei Hengyu company）

stroke adjustable cylinder are widely used in Denmark，because of no transmission clearance，powerful torque，clever hydraulic energy conversion.So our company has designed stroke adjustable cylinder for customers from Denmark.

Introduction to stroke adjustable cylinder:

When the stroke adjustable cylinder needs to be stored for a period of time, please follow the recommended methods: The stroke adjustable cylinder should be stored in a dry, clean, non-corrosive gas indoor environment, pay attention to protect the stroke adjustable cylinder from internal corrosion and external damage. If the indoor requirements cannot be met, the hardened and well-drained ground should be cushioned at least 30cm, and the upper part should be covered with waterproof storage. The oil stroke adjustable cylinder should not be in direct contact with water vapor for a long time. The stroke adjustable cylinder should be placed as vertically as possible with the piston rod facing up, which minimizes corrosion due to possible condensation in the stroke adjustable cylinder and permanent deformation of the seal due to the piston and rod weight. (When the shield is stored in the shield machine, the support shoe is placed upward). Keep the oil port protective cover until the pipe is connected. For long-term storage, the protection should be added on both sides of the piston of the stroke adjustable cylinder Before working, the stroke adjustable cylinder must be run repeatedly with low pressure (greater than the starting pressure) to discharge the air in the stroke adjustable cylinder before normal work. The oil inlet and outlet and the joint must be tightly fastened with a combination pad to prevent oil leakage.

The coordination of the sliding parts of the stroke adjustable cylinder itself should not be too tight, the sealing friction force should not be too large, and H8 / f8 coordination should be selected between the piston rod and the guide sleeve; Check whether the size of the sealing ring is processed strictly according to the standard; If the V-shaped sealing ring is used, the sealing friction should be adjusted to a moderate degree.

When the piston speed of the stroke adjustable cylinder is high, the steel ball of the check valve flows with the oil flow, so that the valve hole is blocked, and the stroke adjustable cylinder moves irregularly. Elimination method: Replace the steel ball with a cone valve or spool with a guide shoulder.

The machining accuracy of the stroke adjustable cylinder depends on the level of equipment, production technology and testing means. stroke adjustable cylinder processing methods are commonly used in two ways, one is rough boring - fine boring - rolling, generally with 45# seamless steel pipe, this method of processing quality is good, but the cost is high. Another method is to use 20# cold-drawn seamless steel pipe, and then honing, the cost is lower. The piston rod must be adjusted and straightened before processing, and the coating thickness of the piston rod is generally not less than 0.03mm. The piston must be machined in strict accordance with the groove size and tolerance requirements given in the seal manual.

Answers to some questions about stroke adjustable cylinder:

Is rubber or polyurethane better for V-ring of hydraulic cylinder?
The hydraulic cylinder V-type seal ring is better with polyurethane, and chlorine rubber is used for various chemicals and high temperatures, especially when there are wear-resistant requirements, polyurethane rubber is needed. But the price of polyurethane rubber is much more expensive than the price of rubber. However, the V-ring material is most commonly used in nitrile and neoprene rubber, and natural rubber is used for sealing water and air. Butyl rubber is used for non-combustible hydraulic fluids and phosphate ester hydraulic fluids. The advantage is that the price is cheaper than the polyurethane material, and the disadvantage is that it is not wear-resistant and the anti-aging property is relatively poor.

What steel pipe does hydraulic cylinder use? This problem is very general. Carbon steel pipe or ordinary seamless steel pipe are all ok, but then there are rolling, quilting, heat treatment and other steps, and the requirements are different, the wall thickness is different, the material is different. It depends on the circumstances.