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FORMERLY KNOWN AS EVA INDUSTRIAL SOLUTIONS
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A welded hydraulic cylinder is a type of linear actuator where the body (barrel) is permanently welded to the end caps, rather than being held together by tie rods. This design provides superior strength, durability, and a compact profile, making it the dominant choice for demanding mobile and heavy-duty equipment applications.
The welded design eliminates potential failure points associated with tie-rod construction, allowing the cylinder to handle high pressures (up to 5,000 PSI or greater) and withstand harsh operating conditions and shock loads.
Without external tie rods, welded cylinders have a slimmer, more streamlined body that requires less installation space, which is advantageous for mobile equipment where room is limited.
The permanent, seamless welded construction minimizes the number of potential leak paths compared to tie-rod cylinders that rely on seals and gaskets between the end caps and barrel.
The robust materials (often high-grade steel or ductile iron) and construction ensure a long service life, reducing maintenance frequency and associated downtime.
The design easily accommodates custom mounting options, port locations, and integrated valves, offering greater flexibility to meet specific application requirements.
The smooth exterior is easier to clean and less prone to collecting debris, a benefit in outdoor or industrial environments.
A welded hydraulic cylinder generally consists of the following internal components, despite the welded exterior:
The main body that contains the piston and fluid.
A disc within the barrel that moves under fluid pressure.
The rod attached to the piston that extends and retracts from the cylinder to perform work.
Welded to the ends of the barrel to seal the cylinder body.
A bolted or threaded component at the rod end that allows the piston rod assembly and seals to be removed for servicing.
Essential for preventing fluid leakage and guiding the piston and rod smoothly.
Due to their strength and compact size, welded hydraulic cylinders are widely used across various heavy-duty industries:
The main body that contains the piston and fluid.
Tractors, harvesters, and other farming implements.
Forklifts, telehandlers, and lift-gates.
Drilling rigs and large off-road vehicles operating in demanding environments.
Hydraulic presses, assembly lines, and power generation controls (e.g., dam gates).
