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A detailed buying guide: how to choose hydraulic cutters, crimpers and punching tools.
This section covers manual hydraulic crimping tools: handheld models with a built-in pump for 4–300 mm² cross-sections and separate crimping heads driven by a hand or foot pump for 400 mm² and above. They are designed for crimping copper and aluminium cable lugs and connecting sleeves when installing switchboards, substations, industrial sites, solar plants and battery cables on vehicles. A hydraulic crimper generates 5–16 t from a small hand effort and needs no power supply, so it suits electricians and service crews. For the working principle, see what hydraulic tools are and how they work.
Handheld crimpers with a built-in pump suit work in distribution boards and on site, while separate heads driven by a foot pump or a 700 bar pump are chosen for large cross-sections and serial work. Check the head type, closed or open C-type, and whether it rotates 180–360° for tight spaces. See how to choose a hydraulic pump and power source.
Handheld models usually deliver 5–12 t of crimping force, while 300–400 mm² cross-sections require 12–16 t or more. The force must match the maximum lug cross-section, otherwise the crimp will be incomplete and the joint will overheat. Read how to choose hydraulic tool load capacity and working force.
Crimpers come with a set of interchangeable hexagonal dies, such as 16–240 mm² or 10–300 mm², and the cross-section marked on the die must match the lug marking. There are also models with indent dies and separate dies for aluminium and copper lugs. See how to choose electrical cable, conduit, trunking and connectors.
A two-speed pump quickly brings the die up to the lug and then switches to power mode, reducing the number of handle strokes. An automatic pressure release valve signals the end of the crimp and protects against overload, and for heavy workloads consider cordless models as well. Read how to choose hydraulic hoses, couplers, valves and pressure gauges and how to choose a cordless press and cable cutting tool.
Handheld hydraulic crimpers weigh 2.5–8 kg, and the length and strength of the handles determine how comfortable it is to work overhead or inside a cabinet. The same family includes hydraulic cable cutters, which are often used together with crimpers. See how to choose a hydraulic cable cutter.
Manual hydraulic crimpers are not insulated, so work only on de-energised and verified cables. Never crimp without a lug or with the wrong die, and keep your fingers away from the die area. Read how to use hydraulic tools safely.
A crimper is usually supplied in a plastic or metal case with a set of dies and spare seals. Check the availability of extra dies, seals and return springs. See how to choose spare parts for pneumatic and hydraulic tools.
Periodically check the oil level, top up with the hydraulic oil specified by the manufacturer and keep the crimper clean in its closed case. Loss of force or oil leaks are a sign that the seals need replacing. See how to store and maintain hydraulic tools.
At ToolsArmenia you can compare hydraulic crimping tools by crimping force, cross-section range, die set, head type and weight and choose the right model for your cables.
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