{"id":2904,"date":"2024-03-06T16:20:53","date_gmt":"2024-03-06T15:20:53","guid":{"rendered":"https:\/\/www.bf-hydraulik.com\/encyclopedia\/lifting-cylinders\/"},"modified":"2026-04-15T11:54:24","modified_gmt":"2026-04-15T09:54:24","slug":"lifting-cylinders","status":"publish","type":"encyclopedia","link":"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/","title":{"rendered":"Lifting Cylinders"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2904\" class=\"elementor elementor-2904 elementor-563\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-735b55f8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"735b55f8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-2820cb8b\" data-id=\"2820cb8b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9fb9997 elementor-widget elementor-widget-text-editor\" data-id=\"9fb9997\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h1>Hydraulic Lifting Cylinders<\/h1><p>Hydraulic <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">lifting cylinders<\/a> are vertically installed hydraulic linear motors. They work against gravity and therefore &ldquo;lift something up.&rdquo; This is where their name comes from. Typical mechanical <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">lifting cylinders<\/a> include, for example, jacks.    <\/p><h2>Characteristics of Hydraulic Lifting Cylinders<\/h2><p>The transmission or amplification of hydraulic forces is based on the incompressibility of fluids and on the difference in cross-sectional area between the master and slave cylinders.<\/p><p><a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">Lifting cylinders<\/a> are fundamentally slave cylinders. This means they receive the <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-pressure\/\" target=\"_self\" title=\"Hydraulic Pressure ExplainedPressure is generally a force acting on a surface. Hydraulic pressure is accordingly a force transmitted through a fluid that acts on the internal walls of a hydraulic&hellip;\" class=\"encyclopedia\">hydraulic pressure<\/a> and amplify it through their larger cross-sectional area compared to the master cylinder (if present). <\/p><p>The simplest <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-system\/\" target=\"_self\" title=\"Hydraulic system: design &amp; applications explained simplyA hydraulic system is used to apply large forces in a targeted manner over a defined distance with minimal effort. The underlying hydraulic principle&hellip;\" class=\"encyclopedia\">hydraulic system<\/a>s with <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">lifting cylinders<\/a> are, for example, <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-jack\/\" target=\"_self\" title=\"Hydraulic jack: lifting heavy loads with little effortHydraulic jacks are technically sophisticated tools that can be used to move even very large loads with minimal muscle power. Compared with traditional&hellip;\" class=\"encyclopedia\">hydraulic jack<\/a>s: Here, a master cylinder amplified by a lever presses into a reservoir containing hydraulic oil. The pressure applied there is transmitted to the slave cylinder, i.e., the lifting cylinder. While it extends over a shorter distance than the master cylinder is immersed in the pressure vessel, it applies a higher force during extension. To reset the lifting cylinder, a <a href=\"https:\/\/www.bf-hydraulik.com\/rueckschlagventil.html\">check valve<\/a> is opened and the master cylinder is relieved. The hydraulic oil then flows back into the reservoir (the <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-tank\/\" target=\"_self\" title=\"Hydraulic tank: Reservoir for the pressure mediumThe hydraulic tank is the reservoir for the hydraulic fluid or the hydraulic medium of a hydraulic system. As a rule, this is a&hellip;\" class=\"encyclopedia\">hydraulic tank<\/a>) and the lifting cylinder returns to its lower end position.     <\/p><p>However, systems consisting of master and slave cylinders are only used for manual operation. These include, for example: <\/p><ul><li>Pallet trucks<\/li><li><a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-jack\/\" target=\"_self\" title=\"Hydraulic jack: lifting heavy loads with little effortHydraulic jacks are technically sophisticated tools that can be used to move even very large loads with minimal muscle power. Compared with traditional&hellip;\" class=\"encyclopedia\">Hydraulic jack<\/a>s<\/li><li>Hydraulic-manual lifting systems such as ramps, flaps, gates, etc.<\/li><\/ul><p>The combination of hydraulic master and slave cylinders without electromechanical assistance is still quite common. Clutches and brakes in vehicles, for example, are operated according to the same principle. Only in this case, the slave cylinder does not &ldquo;lift&rdquo; anything, but exerts its force in a horizontal position. Therefore, in these applications, it is not considered a &ldquo;lifting cylinder.&rdquo; In larger systems, the manually operated master cylinder is replaced by an electrically driven <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-pump\/\" target=\"_self\" title=\"Hydraulic pump provides pressure and volume flowThe hydraulic pump is the core component of a hydraulic system. It ensures the circulation of the hydraulic fluid. In doing so, it generates&hellip;\" class=\"encyclopedia\">hydraulic pump<\/a>.    <\/p><h3>Hydraulic Lifting Cylinders &ndash; From One to Many<\/h3><p>The <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-pressure\/\" target=\"_self\" title=\"Hydraulic Pressure ExplainedPressure is generally a force acting on a surface. Hydraulic pressure is accordingly a force transmitted through a fluid that acts on the internal walls of a hydraulic&hellip;\" class=\"encyclopedia\">hydraulic pressure<\/a> in a system is generated by a pump. This can be manually or electrically driven. The pressure generated by the pump is considered a constant.  <\/p><p>If all cross-sectional areas of the master and slave cylinders were the same size, the effective force at the actuator would correspond to the output force of the pump. However, through a simple trick, the force acting on the slave cylinder can be amplified many times over. This requires only an enlargement of the cross-sectional area of the slave cylinder. Pressure is force per area.   <\/p><p>The immersing master cylinder displaces a certain amount of volume. This volume remains the same during the expansion of the slave cylinder. However, if the cross-sectional area of the slave cylinder is increased, the extension distance of the cylinder decreases. The effective force, however, increases proportionally with the cross-sectional area. This is illustrated by the following example:    <\/p><p>A mechanical master cylinder has a cross-sectional area of 4 cm&sup2; and is immersed with a force of 100 N. The slave cylinder has a cross-sectional area of 8 cm&sup2;. <\/p><p><em>100\/4 = X\/8<br>800\/4 = X<br>200 = X <\/em>It therefore extends with a force of 200 N!<\/p><p>While its extension distance is then only half as large as the retraction distance of the master cylinder, hydraulics is not about speed, but about force. The master cylinder simply needs to be operated accordingly often, or the pump must work long enough until the slave cylinder has extended the desired distance.  <\/p><h3>The Disadvantage of Lifting Cylinders and How It Can Be Remedied<\/h3><p>A disadvantage of <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">lifting cylinders<\/a> is their long overall length. Like any hydraulic linear motor, the lifting cylinder also consists of a housing and a piston rod moving within it. The piston rod must be fully retracted into the housing in the lower end position. However, since the performance of a lifting cylinder depends not only on its force but also on its working length, a conflict of objectives can arise here:   <\/p><p>The desire for a long stroke combined with the most compact design possible when not in use is difficult to implement for simple linear motors.<\/p><p>A solution is offered by so-called &ldquo;<a href=\"https:\/\/www.bf-hydraulik.com\/en\/telescopic-cylinders\/\" target=\"_self\" title=\"Telescopic Cylinders for Long Stroke LengthsThe hydraulic pressure intensification is a simple yet highly effective method for generating very high compression forces. However, a challenge arises when these high compression&hellip;\" class=\"encyclopedia\">telescopic cylinders<\/a>.&rdquo; This is a special form of lifting cylinder. In the <a href=\"https:\/\/www.bf-hydraulik.com\/teleskopzylinder.html\">telescopic cylinder<\/a>, the piston rod is not one-piece, but multi-piece in the form of a telescoping structure. The telescopic cylinder thus combines the functions of housing, piston rod, and lifting cylinder in one unit.   <\/p><p>When fully retracted, the telescopic cylinder has only a small installation depth. It then has a significantly larger cross-sectional area than a conventional hydraulic linear motor. However, this is often technically much easier to accommodate than a bulky, single-acting lifting cylinder.  <\/p><h3>Applications of Hydraulic Lifting Cylinders<\/h3><p><a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">Lifting cylinders<\/a> are frequently found in construction vehicles and dump trucks. They lift the boom arms and sticks or the dump bodies for emptying bulk materials. <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">Lifting cylinders<\/a> are usually single-acting. This means their return is accomplished by the gravity of the applied load or tool. This makes <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">lifting cylinders<\/a> more cost-effective than double-acting cylinders.    <\/p><p>In addition to manual <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">lifting cylinders<\/a>, hydraulic <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">lifting cylinders<\/a> are used in many applications. Typical use cases include: <\/p><ul><li>Lifting platforms<\/li><li><a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-presses\/\" target=\"_self\" title=\"Hydraulic Presses: Workhorses in Crafts and IndustryHydraulic presses are used where particularly high compressive forces are required. These machines are available in a wide variety and are an indispensable part&hellip;\" class=\"encyclopedia\">Hydraulic presses<\/a><\/li><li>Gates and doors<\/li><li>Ramps<\/li><\/ul><p>When the lifting cylinder is combined with a joint, it can be used&mdash;especially in telescopic design&mdash;in dump trucks.<\/p><h3>Additional Variants of Lifting Cylinders<\/h3><p>A lifting cylinder does not necessarily have to be hydraulically operated. Depending on the application, pneumatic or electromagnetic or electromechanical <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">lifting cylinders<\/a> are also in use. However, hydraulic <a href=\"https:\/\/www.bf-hydraulik.com\/en\/lifting-cylinders\/\" target=\"_self\" title='Hydraulic Lifting CylindersHydraulic lifting cylinders are vertically installed hydraulic linear motors. They work against gravity and therefore \"lift something up.\" This is where their name comes from. Typical mechanical lifting&hellip;' class=\"encyclopedia\">lifting cylinders<\/a> are the best option in many applications due to their high force.  <\/p><p> <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-17578f6\" data-id=\"17578f6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-18d5d30 elementor-widget elementor-widget-sidebar\" data-id=\"18d5d30\" data-element_type=\"widget\" data-widget_type=\"sidebar.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div style=\"display:none;\">Search<\/div><form role=\"search\" method=\"get\" class=\"encyclopedia search-form\" action=\"https:\/\/www.bf-hydraulik.com\/en\/encyclopedia\/\">\n    \n    \n    <label class=\"screen-reader-text\" 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