4-70mm Hydraulic crimping tool

A 4-70mm hydraulic crimping tool is a medium-duty manual hydraulic tool specifically designed for creating strong, permanent, and electrically conductive connections for electrical cables. The “4-70mm” refers to the cross-sectional area of the cable (in square millimeters) that it can effectively crimp.

This range is particularly common for:

• Residential and commercial electrical installations: Where larger sub-main cables or feeder cables are used, connecting them to distribution boards, main switches, or large appliances.
• Automotive and marine applications: For heavy-duty battery cables, inverter connections, and high-current wiring.
• Solar PV installations: Connecting solar panels to inverters or charge controllers, especially for the larger DC cables.
• Grounding and bonding: Creating secure connections for earthing systems.
• Telecommunications: For power connections within telecom infrastructure.

Key Features and Specifications:

• Crimping Range: 4mm² to 70mm² (for copper lugs/terminals). Note that for aluminum terminals, the maximum crimping range is often slightly lower, e.g., 4mm² to 50mm².
• Crimping Force: Typically between 6 to 10 tons (or 40kN to 70kN). This hydraulic force is what allows you to effortlessly crimp large cables that would be impossible with manual mechanical crimpers.
• Crimping Type: Almost exclusively hexagonal crimping. This method creates a strong, uniform, and secure connection by compressing the terminal around the conductor from six sides.
• Dies (Molds): The tool comes with a set of interchangeable dies, one for each specific cable size within its range. Common die sizes included are usually 4, 6, 8, 10, 16, 25, 35, 50, and 70 mm².
• Hydraulic System: Operates via a hand pump mechanism. You pump the handle to build hydraulic pressure, which extends a piston to close the crimping dies.