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5.0. DESIGN CRITERIA IN HYDRAULIC CYLINDERS

There are so many factors involved in sealing elements working principle. Ignoring any of these factors could increase the possibility of a design mistake. Hydraulic cylinders have different working conditions. For example, the cylinder used in injection machine and loader both have different seal design criteria in terms of material and sealing elements.

Four main variables should be taken into account while choosing a sealing element.

1. Temperature:

Media and working condition temperature should be considered when choosing suitable sealing element.

2. Pressure:

System pressure and pressure type should be considered when choosing suitable sealing element.

3. Sliding Speed:

System sliding speed should be considered when choosing suitable sealing element.

4. Media:

Media type should be considered when choosing suitable sealing element.

The technical values related to these 4 main variables can be found in our technical catalogue for each sealing element. Apart from these 4 main criteria, there are other variables which also affect the working of hydraulic cylinders. Alp Seals consider these following conditions to be the most important ones.

5. Working Conditions

This is one of the most important variables for hydraulic cylinder design. There are so many factors on this stage which deserve attention.

Main factors are as follows;

5.1. Working in an open or closed area and dirty working conditions are most important criteria for choosing a wiper. It may be necessary to use an ice scraper in winter for cylinders in outside working conditions.

5.2. Radial loads and working positions that affect hydraulic cylinders should be taken into consideration when deciding on the hydraulic cylinder design. For example; rain drops should be prevented from entering into the vertical functioning hydraulic cylinders that are in outside working conditions.