Freyssi Flat Jacks are essential for civil and structural engineers, offer a practical solution for applications requiring controlled large forces. Used in both unforeseen challenges and new constructions, these jacks detail guidelines on bearing area, access gaps, tandem usage, shear resistance, and inlet/vent positioning.
Manufactured by Freyssinet, Freyssi Flat Jacks are ultra-low profile hydraulic lifting devices engineered for structural applications where vertical clearance is extremely limited. Unlike traditional hydraulic jacks that use a projecting piston or ram, flat jacks consist of a thin, sealed steel chamber that expands vertically when pressurized.
When connected to a high-pressure hydraulic pump, hydraulic fluid enters the flat jack and causes the internal chamber to expand in thickness. This expansion generates controlled lifting force across a wide bearing surface. Because of their minimal collapsed height, Freyssi flat jacks can be inserted into spaces where even low-height cylinders cannot operate.
Flat jack rentals are widely used in civil engineering, infrastructure rehabilitation, and heavy structural projects that require precise load transfer and controlled incremental lifting.
Flat jacks typically provide short stroke lengths, often under a few inches depending on model.
Freyssi flat jacks are used for low-clearance hydraulic lifting and structural load transfer applications.
Yes. Flat jacks are commonly used for lifting bridge components during bearing replacement.
They can. Hydraulic Rentals can supply complete flat jack rental packages including hoses, couplers, and pressure gauges.
