4 Ways to Minimize Hydraulic Cylinder Failure and Repair Costs

As a product category,?????????? ??????? are nearly as common as pumps and motors combined. Therefore, if you run a lot of hydraulic equipment, it is likely that cylinder repair cost is a considerable part of your overall operating costs.

This doesn’t mean that the cylinder will not perform the work asked of it, it will – although not having a suitable service life. So if you have any cylinders that don’t continue as They should you Might Need to address one or more of these four issues:

#1. Bent Rods

Bending of cylinder rods can be brought on by insufficient rod diameter or material strength, improper cylinder mounting arrangement or a combination of those three. Once the pole bends, deforming load is set on the rod-seal.

The allowable rod loading for a cylinder within an current application can be assessed using the Euler formula.

#2. Rod Finish

The top finish of the cylinder rod has a significant influence on the life span of the pole seal. If the surface roughness is too low (smooth), seal existence can be reduced as a result of insufficient lubrication. If the surface roughness is overly high, contaminant ingression is increased and an unacceptable level of leakage past the pole seal can result.

In some applications, the usage of an alternate rod surface therapy with exceptional mechanical properties to traditional hard-chrome plating, for example nickel-chrome plating or High Velocity Oxygen Fuel (HVOF) metal spraying, can increase the service life of this pole and its clogs.

And in certain cases, the setup of a shroud or bellows to defend the pole surface and its own seals from impact contamination and damage, can afford similar life extension benefits.

#3. Ballooned Tubes

Ballooning of the cylinder tube is generally caused by insufficient wall thickness and/or material strength for your cylinder’s operating pressure. When the tube disappeared, the suitable tolerance between the piston tube and seal wall is dropped, allowing high-pressure fluid to skip the seal. This high velocity fluid may erode the seal and localised heating caused by the pressure drop across the piston reduces seal life-the end result of which is: premature collapse of the piston seal.

#4. Insufficient Bearing Area

If the surface area of the posture (wear) bands at the molecule and also on the piston are inadequate to adequately support the negative thrust transferred into the cylinder, excessive load is placed on the rod and piston seals. This causes deformation of their seals, and finally, their premature collapse.

Fix or Redesign?

To summarize the above: not all of hydraulic cylinders are created equal. Therefore, if you have any hydraulic cylinders that suffer recurring failure, it’s very likely that design alterations are required to break the vicious circle of failure and repair.

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