If we apply this to hydraulic cylinders, then as many as one in four hydraulic cylinders are not adequately designed for the application they’re operating in.
So if you have any cylinders that don’t last like they should you may need to address one or more of the following four issues:
#1. Bent Rods
Bending of Hydraulic Cylinders rods can be caused by insufficient rod diameter or material strength, improper cylinder mounting arrangement or a combination of all three. Once the rod bends, deforming load is placed on the rod-seal. This increases leakage and ultimately results in premature failure of the seal.
The allowable rod loading for a cylinder in an existing application can be checked using the Euler formula.
#2. Rod Finish
The surface finish of the Hydraulic Cylinders rod has a significant effect on the life of the rod seal. If the surface roughness is too low (smooth), seal life can be reduced as a result of inadequate lubrication. If the surface roughness is too high, contaminant ingression is increased and an unacceptable level of leakage past the rod seal can result.
In the context of extending cylinder service life, think of the cylinder rod’s surface as a lubricated, wear-surface and treat it accordingly.
In some applications, the use of an alternative rod surface treatment with superior mechanical properties to conventional hard-chrome plating, such as nickel-chrome plating or High Velocity Oxygen Fuel (HVOF) metal spraying, can increase the service life of the rod and its seals.
Hydraulic Cylinders range from the most common household types to specialty types.Check out the website that specializes in wrenches at https://www.atwwren.com for details.
Or contact us
Company Name: Hang Zhou WREN Hydraulic Equipment Manufacturing Co., Ltd.
Address: No. 24, Xingxing Road, Linping, Hang Zhou, China
Tel: +86 571 8811 5720