[et_pb_section fb_built=”1″ _builder_version=”4.19.4″ _module_preset=”default” custom_padding=”4px|||||” global_colors_info=”{}”][et_pb_row _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
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In single-acting hydraulic cylinders<\/strong>, only<\/strong> one piston side<\/strong> is pressurized with pressure fluid<\/strong>. For this reason, the force<\/strong> and movement is generated hydraulically only in one direction<\/strong>.<\/p>\n The piston is returned<\/strong> to its initial position either by its own weight<\/strong>, an external load<\/strong> (external load) or by built-in springs<\/strong>. This type of cylinder is usually designed as a plunger<\/strong> or plunger cylinder<\/strong>. In them, the effective piston area<\/strong> is formed by the cross-section of the piston rod<\/strong>, which is sealed in the rod guide.<\/p>\n This eliminates<\/strong> the need for sealing<\/strong> against the cylinder barrel<\/strong>. Thus, no requirements<\/strong> are placed on its surface<\/strong> and diameter accuracy<\/strong>. Single-acting cylinders thus have a high degree of efficiency<\/strong> because there is only one<\/strong> sealing point<\/strong>. It also has few wear parts<\/strong> and is inexpensive<\/strong>.<\/p>\n [\/et_pb_text][et_pb_image src=”https:\/\/hytrade24.com\/hydraulikmagazin\/\/wp-content\/uploads\/2023\/01\/Schaltbilder-einfachwirkender-Hydraulikzylinder.png” alt=”Hydraulic circuit diagram of single-acting hydraulic cylinder and telescopic cylinder” title_text=”Circuit diagrams of single-acting hydraulic cylinders” align=”center” _builder_version=”4.19.4″ _module_preset=”default” custom_margin=”||50px|||” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.19.5″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.19.5″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” header_4_font_size=”20px” sticky_enabled=”0″]<\/p>\n This<\/strong> type of<\/strong> cylinder transmits only compressive forces<\/strong>, as mentioned above. Plunger cylinders<\/strong> can be designed with or without internal stops and guide pistons,<\/strong> depending on the application. The magnitude of the compressive force<\/strong> is calculated for all designs by multiplying<\/strong> the piston rod area<\/strong> by the operating pressure<\/strong>.<\/p>\n Plunger cylinders<\/strong> are used<\/strong> wherever a clear direction of force<\/strong> enables safe return to the initial position. Examples of applications here are lower piston presses<\/strong>, scissor lift tables<\/strong>, lifting devices<\/strong>, etc. [\/et_pb_text][et_pb_image src=”https:\/\/hytrade24.com\/hydraulikmagazin\/\/wp-content\/uploads\/2023\/01\/Tauchkolben-und-Plungerzylinder.png” alt=”Schematic representation of dipolebn and plunger cylinder” title_text=”Plunger piston and plunger cylinder” align=”center” _builder_version=”4.19.4″ _module_preset=”default” max_width=”80%” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.19.5″ _module_preset=”default” custom_margin=”21px||||false|false” hover_enabled=”0″ global_colors_info=”{}” header_5_font_size=”20px” sticky_enabled=”0″]<\/p>\n Cylinders with return springs are used when there is no external force to return the piston rod. These springs can be either inside the cylinder or attached to the cylinder as separate components.<\/p>\n Since they can apply limited travel and forces, they are mainly used in smaller cylinders. They are often used in fixture technology as clamping cylinders or as assembly tools for repairs.<\/p>\n To extend the piston rod, pressure is applied to the effective piston surface via port “A”. The return spring ensures the return movement of the piston rod. To retract the piston rod, pressure is applied to the effective ring surface via port “B”. The return spring provides the extension movement.<\/p>\n [\/et_pb_text][et_pb_image src=”https:\/\/hytrade24.com\/hydraulikmagazin\/\/wp-content\/uploads\/2023\/01\/einfach-wirkende-Hydraulikzylinder-mit-feder.png” alt=”Schematic diagram of single-acting hydraulic cylinder with spring return” title_text=”single-acting hydraulic cylinders with spring return” align=”center” _builder_version=”4.19.4″ _module_preset=”default” height=”250px” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.19.5″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” header_6_font_size=”20px” sticky_enabled=”0″]<\/p>\n Rapid traverse cylinders<\/strong> are widely used in press construction in<\/strong> particular. They work differently than conventional cylinders. When the full force is not required, only part of the effective piston area<\/strong>, called the rapid traverse piston, is pressurized<\/strong>. Only later, via pressure valves<\/strong> or limit switches<\/strong>, is the entire effective piston area switched on by the control system using a hydraulic pump<\/strong>.<\/p>\n This type of cylinder has the following advantages<\/strong>:<\/p>\n [\/et_pb_text][et_pb_image src=”https:\/\/hytrade24.com\/hydraulikmagazin\/\/wp-content\/uploads\/2023\/01\/Eilgangzylinder-einfachwirkend.png” alt=”Schematic representation of single-acting rapid-motion cylinders” title_text=”Single-acting rapid-motion cylinder” align=”center” _builder_version=”4.19.4″ _module_preset=”default” max_width=”60%” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n Drive rapid traverse<\/strong> = connection A1<\/strong> [\/et_pb_text][et_pb_text _builder_version=”4.19.5″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” header_6_font_size=”20px” sticky_enabled=”0″]<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_2,1_2″ _builder_version=”4.19.4″ _module_preset=”default” custom_margin=”|auto|40px|auto||” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/hytrade24.com\/hydraulikmagazin\/\/wp-content\/uploads\/2023\/01\/einfachwirkender-Teleskopzylinder.png” alt=”Schematic diagram of single-acting telescopic cylinders” title_text=”single-acting telescopic cylinder” align=”center” _builder_version=”4.19.4″ _module_preset=”default” height=”400px” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n When the pistons<\/strong> are pressurized via port<\/strong> “A”<\/strong>, they move out one after the other. The pressure depends on the load<\/strong> and the effective area<\/strong>. Consequently, the piston<\/strong> with the largest effective area<\/strong> moves out first<\/strong>.<\/p>\n At constant pressure<\/strong> and flow rate<\/strong>, the extension movement<\/strong> starts<\/strong> with the highest<\/strong> force<\/strong> and low speed and ends<\/strong> with the lowest force and higher speed<\/strong>.<\/p>\n The required lifting capacity<\/strong> must be designed<\/strong> for the smallest<\/strong> effective piston area<\/strong>. For single-acting telescopic cylinders, the sequence of<\/strong> the retraction movement<\/strong> is reversed<\/strong> by external load. This means that the piston<\/strong> with the smallest area<\/strong> moves to the end position<\/strong> first.<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.19.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_button button_url=”@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjM5MiJ9fQ==@” button_text=”All about hydraulic cylinder” button_alignment=”center” _builder_version=”4.19.4″ _dynamic_attributes=”button_url” _module_preset=”default” custom_button=”on” button_text_size=”15px” button_text_color=”#d60879″ button_bg_color=”#FFFFFF” button_border_color=”#d60879″ button_icon_color=”#d60879″ global_colors_info=”{}”][\/et_pb_button][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":" What are single-acting hydraulic cylinders?In single-acting hydraulic cylinders, only one piston side is pressurized with pressure fluid. For this reason, the force and movement is generated hydraulically only in one direction. The piston is returned to its initial position either by its own weight, an external load (external load) or by built-in springs. This type […]<\/p>\n","protected":false},"author":2,"featured_media":506,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[30,31],"tags":[],"class_list":["post-543","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hydraulic-cylinder","category-knowledge","et-has-post-format-content","et_post_format-et-post-format-standard"],"_links":{"self":[{"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/posts\/543","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/comments?post=543"}],"version-history":[{"count":9,"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/posts\/543\/revisions"}],"predecessor-version":[{"id":1208,"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/posts\/543\/revisions\/1208"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/media\/506"}],"wp:attachment":[{"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/media?parent=543"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/categories?post=543"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hytrade24.com\/hydraulikmagazin\/en\/wp-json\/wp\/v2\/tags?post=543"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Single-acting hydraulic cylinders – designs<\/h3>\n
Plunger or plunger cylinder<\/h4>\n
The piston extends<\/strong> when the effective piston area is pressurized with the operating pressure<\/strong> via port “A”<\/strong>. The cylinder is retracted<\/strong> by the piston’s own weight<\/strong> or by an external force<\/strong>.<\/p>\nHydraulic cylinder single-acting with spring return<\/h5>\n
Single-acting hydraulic cylinders with rapid traverse<\/h6>\n
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Full pressing force<\/strong> = connection A2<\/strong><\/p>\nSingle acting telescopic cylinders<\/strong><\/h6>\n