Hydraulic shears are used for cutting sheet metal quickly and accurately. They are fast, quiet, and can cut up to an inch of metal. The metal is held in place with clamps and a squaring arm is used for a smooth cut. Maintenance is important to avoid injury or damage.
Hydraulic shears are used in high volume metal fabrication operations that require the ability to cut and score sheet metal accurately and quickly. Hydraulic shears, contrary to their name, look nothing like pruning shears. Instead, the cutting mechanism is enclosed within a large self-contained unit that can be up to ten feet tall and 16 feet long. Multiple sets of sharpened blades inside the shears cut metal to the operator’s specifications, while support arms stabilize the metal as it is cut.
Hydraulic shears are preferred for high-intensity metal production because they are fast, quiet, and capable of continuous operation. These shears can accommodate a range of metal plate sizes, depending on the manufacturer and model. Many can cut up to an inch of metal and are also used in demolition to break metal into more manageable pieces for recycling. Most shears are designed for floor-standing installation and do not need to be built in at the factory, which means they can even be moved as production line needs change.
The metal to be cut is fed into the hydraulic shears and held in place with clamps so that it does not shift in position during the cutting process. If a 90° cut is required, a squaring arm or backgauge will be used to ensure a smooth and even cut. A small burr may form on the edge of the blade, which may need to be sanded. Users of hydraulic shears should be aware, however, that the blades and retaining clamps can leave small marks and should compensate accordingly.
Like all heavy equipment, hydraulic shears can be dangerous if operated incorrectly or improperly maintained, although the cutting system is contained within the unit and out of unintended reach of the user’s extremities. It is important that the blades remain sharp to avoid cuts and to maximize efficiency and that all moving parts are well lubricated and clean. In addition to checking the electrical system frequently, users should be sure to maintain hydraulic fluid levels within manufacturer specifications to avoid injury or damage to the machine.
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