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2. Collet - Wikipedia

   en.wikipedia.org/wiki/Collet

   Several machine collets (top and centre) and a dismantled pin chuck (below). Generally, a collet chuck, [3] considered as a unit, consists of a tapered receiving sleeve (sometimes integral with the machine spindle), the collet proper (usually made of spring steel) which is inserted into the receiving sleeve, and (often) a cap that screws over the collet, clamping it via another taper.

3. Crane (machine) - Wikipedia

   en.wikipedia.org/wiki/Crane_(machine)

   Cranes are commonly employed in transportation for the loading and unloading of freight, in construction for the movement of materials, and in manufacturing for the assembling of heavy equipment. The first known crane machine was the shaduf , a water-lifting device that was invented in ancient Mesopotamia (modern Iraq) and then appeared in ...

4. C-clamp - Wikipedia

   en.wikipedia.org/wiki/C-clamp

   A C-clamp or G-clamp or G-cramp is a type of clamp device typically used to hold a wood or metal workpiece, and often used in, but are not limited to, carpentry and welding. . Often believed that these clamps are called "C" clamps because of their C-shaped frame, or also often called C-clamps or G-clamps [1] because including the screw part, they are shaped like an uppercase lette

5. Double-stack rail transport - Wikipedia

   en.wikipedia.org/wiki/Double-stack_rail_transport

   Container ships only take 40's, 20's and also 45's above deck. 90% of the containers that these ships carry are 40-footers and 90% of the world's freight moves on container ships; so 81% of the world's freight moves by 40-foot containers. Most of these 40-foot containers are owned by non-U.S. companies like Maersk, MSC, and CMA CGM.

6. Hydraulic rescue tool - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_rescue_tool

   The tools operate on the basis of the hydraulic fluid pressure of up to 720 bars (10,400 psi; 72 MPa), which must be provided from a power source. At present, there are three different means of generating pressure. The most commonly used source is a separate power unit, small petrol (gasoline) engine connected to a hydraulic pump.

7. Tool - Wikipedia

   en.wikipedia.org/wiki/Tool

   This class of tools allows the use of one tool that has at least two different capabilities. "Multi-purpose" tools are basically multiple tools in one device/tool. Tools such as this are often power tools that come with many different attachments like a rotary tool does, so one could say that a power drill is a "multi-purpose" tool. [40]