- Hydraulic power comes from using liquids to generate power and pressure. Crimping tools that use hydraulic power can put much more pressure on metal pipes than human muscle can. These tools come in a variety of shapes and sizes, and you should get the one that's most appropriate to your job.
- Some hydraulic crimping tools are quite large, such as those that are meant to be used on pipes with a wide diameter. These tools are often mounted so the pipe is pushed into them where it will be crimped and withdrawn. Some of these tools work off of electricity, which works a pump to create hydraulic pressure, but others have levers that workers have to pump by hand to create the necessary hydraulic pressure to make the crimper function.
- Portable powered crimpers look like the child of a drill driver and a crimping tool. There's usually a battery pack or other power connection that goes into the base of the pistol grip, but instead of a drill section in the end of the tool there's a crimping tool. These tools are a little bulky, but they are also quite functional. They're used when it's too inconvenient to take pipe to the crimper, so instead you have to take the crimper to the pipe.
- Perhaps the simplest form of hydraulic crimper is the hand crimper. These tools are relatively small and lightweight, built for portability as well as power. Workers can transport the crimper to the pipe, but the tools still work off of human muscle rather than electric power. There's a lever that you have to pump to create the necessary hydraulic pressure tol crimp the pipe.
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