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  2. Knockout punch - Wikipedia

    en.wikipedia.org/wiki/Knockout_punch

    In metalworking, a knockout punch, also known as a chassis punch, panel punch, Greenlee punch, or a Q-max, [1] is a hand tool used to punch a hole through sheet metal. It is a very simple tool that consists of a punch, die, and screw. There are three different drive systems: manual, ratchet, and hydraulic. [2]

  3. Hydraulic compressor - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_compressor

    A hydraulic compressor is a means of compressing air using hydraulic energy. There are two very different types of machines referred to as hydraulic compressors. One type is a mechanical air compressor that is driven by a hydraulic motor. It is a method of converting hydraulic power to pneumatic power. [1]

  4. Underground pneumatic boring - Wikipedia

    en.wikipedia.org/wiki/Underground_pneumatic_boring

    Underground pneumatic drills can be used in the installation of public utilities like power lines, gas lines, phone cables, and cable television.It can also be used to install residential lawn irrigation systems.

  5. Northern Tool - Wikipedia

    en.wikipedia.org/wiki/Northern_Tool

    Northern Tool + Equipment (commonly referred to as Northern Tool) is a manufacturer and retailer of light industrial equipment and do-it-yourself supplies.Founded in 1981 as Northern Hydraulics, the company was officially renamed to Northern Tool + Equipment and is the owner of several private label brands including NorthStar, Powerhorse, Klutch, Strongway, Ultra-Tow, Roughneck, Gravel Gear ...

  6. Hydraulic torque wrench - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_torque_wrench

    A hydraulic torque wrench is significantly quieter, lighter weight and more accurate than pneumatic impact wrenches capable of similar torque output, making it an appealing alternative for many users to the very loud and cumbersome impact wrenches or torque multipliers which were formerly the only viable option for working with very large nuts ...

  7. Diving air compressor - Wikipedia

    en.wikipedia.org/wiki/Diving_air_compressor

    A diving air compressor is a breathing air compressor that can provide breathing air directly to a surface-supplied diver, or fill diving cylinders with high-pressure air pure enough to be used as a hyperbaric breathing gas. A low pressure diving air compressor usually has a delivery pressure of up to 30 bar, which is regulated to suit the ...